./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3.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_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/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_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/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_e72322b7-9647-4338-bc43-b3b96abd2d26/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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:51,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:51,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:22:51,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:51,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:51,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:51,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:51,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:51,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:51,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:51,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:51,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:51,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:51,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:51,905 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:51,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:51,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:22:51,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:22:51,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:51,907 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:51,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:51,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:51,909 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_e72322b7-9647-4338-bc43-b3b96abd2d26/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 -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-11-28 02:22:52,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:52,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:52,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:52,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:52,239 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:52,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-28 02:22:55,377 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/data/a0997450e/e5a0ccc7a64f425fb63806ce266e4104/FLAGa5f7f1a87 [2024-11-28 02:22:55,632 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:55,633 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-28 02:22:55,644 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/data/a0997450e/e5a0ccc7a64f425fb63806ce266e4104/FLAGa5f7f1a87 [2024-11-28 02:22:55,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/data/a0997450e/e5a0ccc7a64f425fb63806ce266e4104 [2024-11-28 02:22:55,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:55,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:55,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:55,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:55,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:55,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481b7b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55, skipping insertion in model container [2024-11-28 02:22:55,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:55,953 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_e72322b7-9647-4338-bc43-b3b96abd2d26/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-11-28 02:22:55,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:55,974 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:56,004 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_e72322b7-9647-4338-bc43-b3b96abd2d26/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-11-28 02:22:56,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:56,019 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:56,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56 WrapperNode [2024-11-28 02:22:56,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:56,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:56,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:56,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:56,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,059 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-28 02:22:56,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:56,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:56,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:56,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:56,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,086 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:22:56,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:56,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:56,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:56,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:56,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (1/1) ... [2024-11-28 02:22:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:56,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:56,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:56,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:22:56,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:22:56,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:22:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:22:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:22:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:22:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 02:22:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 02:22:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:22:56,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-28 02:22:56,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-28 02:22:56,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-28 02:22:56,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-28 02:22:56,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:56,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:56,183 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:22:56,308 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:56,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:56,661 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:22:56,661 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:56,958 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:56,958 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:22:56,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56 BoogieIcfgContainer [2024-11-28 02:22:56,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:56,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:56,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:56,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:56,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:55" (1/3) ... [2024-11-28 02:22:56,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:56" (2/3) ... [2024-11-28 02:22:56,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56" (3/3) ... [2024-11-28 02:22:56,972 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-11-28 02:22:56,991 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:56,992 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3.wvr.c that has 7 procedures, 41 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 02:22:56,992 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:22:57,129 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-28 02:22:57,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-28 02:22:57,238 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-28 02:22:57,241 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:22:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-28 02:22:57,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-28 02:22:57,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-28 02:22:57,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:57,277 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;@2bce986a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:57,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:22:57,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:22:57,314 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-28 02:22:57,314 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:22:57,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:57,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:57,317 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 4 more)] === [2024-11-28 02:22:57,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:57,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2085124696, now seen corresponding path program 1 times [2024-11-28 02:22:57,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:57,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857544028] [2024-11-28 02:22:57,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857544028] [2024-11-28 02:22:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857544028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222547391] [2024-11-28 02:22:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:58,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:58,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:58,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:58,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:22:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:58,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:22:58,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:01,297 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-11-28 02:23:01,298 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-11-28 02:23:01,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69712 event pairs, 1570 based on Foata normal form. 1/11938 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-11-28 02:23:01,567 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-11-28 02:23:01,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-28 02:23:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:23:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:23:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-28 02:23:01,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-28 02:23:01,585 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-28 02:23:01,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-28 02:23:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-28 02:23:01,627 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-11-28 02:23:01,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-11-28 02:23:01,636 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-28 02:23:01,637 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-11-28 02:23:01,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:01,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:01,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:01,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:23:01,639 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 4 more)] === [2024-11-28 02:23:01,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1157996391, now seen corresponding path program 1 times [2024-11-28 02:23:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:01,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114750501] [2024-11-28 02:23:01,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114750501] [2024-11-28 02:23:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114750501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:01,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:01,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:01,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257014627] [2024-11-28 02:23:01,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:01,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:01,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:01,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:01,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:01,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:01,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:01,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:04,752 INFO L124 PetriNetUnfolderBase]: 23871/27720 cut-off events. [2024-11-28 02:23:04,752 INFO L125 PetriNetUnfolderBase]: For 6130/6130 co-relation queries the response was YES. [2024-11-28 02:23:04,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68940 conditions, 27720 events. 23871/27720 cut-off events. For 6130/6130 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 95814 event pairs, 2286 based on Foata normal form. 294/27956 useless extension candidates. Maximal degree in co-relation 18873. Up to 12307 conditions per place. [2024-11-28 02:23:04,956 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-11-28 02:23:04,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-11-28 02:23:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-11-28 02:23:04,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7434782608695653 [2024-11-28 02:23:04,964 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 171 transitions. [2024-11-28 02:23:04,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-11-28 02:23:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:05,037 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-11-28 02:23:05,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-11-28 02:23:05,039 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-28 02:23:05,039 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-11-28 02:23:05,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:05,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:05,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:05,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:23:05,042 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 4 more)] === [2024-11-28 02:23:05,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1133150099, now seen corresponding path program 1 times [2024-11-28 02:23:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:05,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970296654] [2024-11-28 02:23:05,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:05,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970296654] [2024-11-28 02:23:05,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970296654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390707800] [2024-11-28 02:23:05,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:05,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:05,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:05,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:23:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:05,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:05,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:05,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390707800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:05,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-28 02:23:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374282774] [2024-11-28 02:23:05,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:05,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:05,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:05,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:05,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:05,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:05,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:05,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:05,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:08,511 INFO L124 PetriNetUnfolderBase]: 32069/37907 cut-off events. [2024-11-28 02:23:08,512 INFO L125 PetriNetUnfolderBase]: For 33247/33247 co-relation queries the response was YES. [2024-11-28 02:23:08,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110174 conditions, 37907 events. 32069/37907 cut-off events. For 33247/33247 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 149188 event pairs, 4677 based on Foata normal form. 768/38415 useless extension candidates. Maximal degree in co-relation 48056. Up to 18238 conditions per place. [2024-11-28 02:23:08,754 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 122 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2024-11-28 02:23:08,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 137 transitions, 796 flow [2024-11-28 02:23:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-11-28 02:23:08,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-11-28 02:23:08,756 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 166 transitions. [2024-11-28 02:23:08,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 137 transitions, 796 flow [2024-11-28 02:23:08,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 137 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:23:08,773 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 250 flow [2024-11-28 02:23:08,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2024-11-28 02:23:08,775 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-28 02:23:08,775 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 250 flow [2024-11-28 02:23:08,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:08,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:08,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:08,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:23:08,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:23:08,978 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 4 more)] === [2024-11-28 02:23:08,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1394237679, now seen corresponding path program 2 times [2024-11-28 02:23:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139510702] [2024-11-28 02:23:08,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:09,033 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:09,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139510702] [2024-11-28 02:23:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139510702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265228365] [2024-11-28 02:23:09,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:09,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:23:09,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:09,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:09,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:09,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:09,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:09,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265228365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:09,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:09,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-28 02:23:09,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665433115] [2024-11-28 02:23:09,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:09,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:09,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:09,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:09,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:09,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:09,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:09,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:12,196 INFO L124 PetriNetUnfolderBase]: 31117/36937 cut-off events. [2024-11-28 02:23:12,196 INFO L125 PetriNetUnfolderBase]: For 47228/47244 co-relation queries the response was YES. [2024-11-28 02:23:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123161 conditions, 36937 events. 31117/36937 cut-off events. For 47228/47244 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 148484 event pairs, 6585 based on Foata normal form. 878/37527 useless extension candidates. Maximal degree in co-relation 55193. Up to 20356 conditions per place. [2024-11-28 02:23:12,410 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 123 selfloop transitions, 10 changer transitions 0/140 dead transitions. [2024-11-28 02:23:12,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 140 transitions, 856 flow [2024-11-28 02:23:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-28 02:23:12,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-11-28 02:23:12,412 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 250 flow. Second operand 5 states and 170 transitions. [2024-11-28 02:23:12,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 140 transitions, 856 flow [2024-11-28 02:23:12,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 140 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:23:12,597 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 304 flow [2024-11-28 02:23:12,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-11-28 02:23:12,598 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-28 02:23:12,599 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 304 flow [2024-11-28 02:23:12,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:12,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:12,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:12,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:23:12,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:12,800 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 4 more)] === [2024-11-28 02:23:12,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1775928308, now seen corresponding path program 1 times [2024-11-28 02:23:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297684143] [2024-11-28 02:23:12,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297684143] [2024-11-28 02:23:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297684143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851784203] [2024-11-28 02:23:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:12,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:12,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:12,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:12,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:12,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:12,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:12,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:12,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:15,863 INFO L124 PetriNetUnfolderBase]: 31227/36998 cut-off events. [2024-11-28 02:23:15,864 INFO L125 PetriNetUnfolderBase]: For 72743/72747 co-relation queries the response was YES. [2024-11-28 02:23:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132180 conditions, 36998 events. 31227/36998 cut-off events. For 72743/72747 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 148911 event pairs, 2799 based on Foata normal form. 545/37471 useless extension candidates. Maximal degree in co-relation 70539. Up to 16743 conditions per place. [2024-11-28 02:23:16,054 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 128 selfloop transitions, 8 changer transitions 0/143 dead transitions. [2024-11-28 02:23:16,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 143 transitions, 911 flow [2024-11-28 02:23:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-28 02:23:16,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-28 02:23:16,056 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 304 flow. Second operand 5 states and 169 transitions. [2024-11-28 02:23:16,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 143 transitions, 911 flow [2024-11-28 02:23:16,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 902 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:16,290 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 309 flow [2024-11-28 02:23:16,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-11-28 02:23:16,291 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-28 02:23:16,291 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 309 flow [2024-11-28 02:23:16,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:16,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:16,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:16,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:23:16,292 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 4 more)] === [2024-11-28 02:23:16,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1179353946, now seen corresponding path program 1 times [2024-11-28 02:23:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:16,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047214140] [2024-11-28 02:23:16,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047214140] [2024-11-28 02:23:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047214140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:16,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667513057] [2024-11-28 02:23:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:16,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:16,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:16,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:16,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:16,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:16,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:19,505 INFO L124 PetriNetUnfolderBase]: 30840/36629 cut-off events. [2024-11-28 02:23:19,505 INFO L125 PetriNetUnfolderBase]: For 82967/82971 co-relation queries the response was YES. [2024-11-28 02:23:19,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133890 conditions, 36629 events. 30840/36629 cut-off events. For 82967/82971 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 145682 event pairs, 1541 based on Foata normal form. 438/36999 useless extension candidates. Maximal degree in co-relation 71754. Up to 16333 conditions per place. [2024-11-28 02:23:19,693 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 137 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2024-11-28 02:23:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1147 flow [2024-11-28 02:23:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 02:23:19,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7043478260869566 [2024-11-28 02:23:19,695 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 309 flow. Second operand 5 states and 162 transitions. [2024-11-28 02:23:19,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1147 flow [2024-11-28 02:23:19,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 154 transitions, 1118 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:19,886 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 363 flow [2024-11-28 02:23:19,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-11-28 02:23:19,887 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-11-28 02:23:19,887 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 363 flow [2024-11-28 02:23:19,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:19,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:19,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:19,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:23:19,887 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 4 more)] === [2024-11-28 02:23:19,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1634973949, now seen corresponding path program 1 times [2024-11-28 02:23:19,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:19,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300733171] [2024-11-28 02:23:19,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:19,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:20,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300733171] [2024-11-28 02:23:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300733171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687932302] [2024-11-28 02:23:20,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:20,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:20,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:20,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:23:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:20,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:20,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:20,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687932302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:20,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-28 02:23:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779995007] [2024-11-28 02:23:20,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:20,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:20,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:20,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:20,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:20,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:20,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:20,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:20,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:24,323 INFO L124 PetriNetUnfolderBase]: 40645/49318 cut-off events. [2024-11-28 02:23:24,324 INFO L125 PetriNetUnfolderBase]: For 140246/140298 co-relation queries the response was YES. [2024-11-28 02:23:24,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193384 conditions, 49318 events. 40645/49318 cut-off events. For 140246/140298 co-relation queries the response was YES. Maximal size of possible extension queue 1934. Compared 223433 event pairs, 6741 based on Foata normal form. 923/49581 useless extension candidates. Maximal degree in co-relation 122308. Up to 22248 conditions per place. [2024-11-28 02:23:24,913 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 160 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2024-11-28 02:23:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 175 transitions, 1424 flow [2024-11-28 02:23:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-28 02:23:24,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-11-28 02:23:24,915 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 363 flow. Second operand 5 states and 156 transitions. [2024-11-28 02:23:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 175 transitions, 1424 flow [2024-11-28 02:23:24,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 175 transitions, 1376 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:24,995 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 403 flow [2024-11-28 02:23:24,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-28 02:23:24,996 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-28 02:23:24,997 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 403 flow [2024-11-28 02:23:24,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:24,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:24,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:25,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:23:25,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:25,198 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 4 more)] === [2024-11-28 02:23:25,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1706196127, now seen corresponding path program 2 times [2024-11-28 02:23:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772816952] [2024-11-28 02:23:25,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:25,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:25,222 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772816952] [2024-11-28 02:23:25,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772816952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533562838] [2024-11-28 02:23:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:25,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:25,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:25,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:25,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:25,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:25,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:25,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:25,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:29,060 INFO L124 PetriNetUnfolderBase]: 36479/44072 cut-off events. [2024-11-28 02:23:29,060 INFO L125 PetriNetUnfolderBase]: For 130868/130920 co-relation queries the response was YES. [2024-11-28 02:23:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189068 conditions, 44072 events. 36479/44072 cut-off events. For 130868/130920 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 189809 event pairs, 2512 based on Foata normal form. 465/44181 useless extension candidates. Maximal degree in co-relation 120921. Up to 19734 conditions per place. [2024-11-28 02:23:29,354 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 166 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-28 02:23:29,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 184 transitions, 1513 flow [2024-11-28 02:23:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-28 02:23:29,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-28 02:23:29,356 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 403 flow. Second operand 5 states and 155 transitions. [2024-11-28 02:23:29,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 184 transitions, 1513 flow [2024-11-28 02:23:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 1513 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:23:30,297 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 464 flow [2024-11-28 02:23:30,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-11-28 02:23:30,298 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-28 02:23:30,298 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 464 flow [2024-11-28 02:23:30,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:30,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:30,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:23:30,299 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 4 more)] === [2024-11-28 02:23:30,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1273638084, now seen corresponding path program 1 times [2024-11-28 02:23:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882964729] [2024-11-28 02:23:30,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882964729] [2024-11-28 02:23:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882964729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:30,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:30,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:30,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458884327] [2024-11-28 02:23:30,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:30,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:30,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:30,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:30,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:30,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:30,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:30,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:30,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:34,207 INFO L124 PetriNetUnfolderBase]: 36021/43614 cut-off events. [2024-11-28 02:23:34,207 INFO L125 PetriNetUnfolderBase]: For 144014/144066 co-relation queries the response was YES. [2024-11-28 02:23:34,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196609 conditions, 43614 events. 36021/43614 cut-off events. For 144014/144066 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 189736 event pairs, 2107 based on Foata normal form. 471/43729 useless extension candidates. Maximal degree in co-relation 125727. Up to 19506 conditions per place. [2024-11-28 02:23:34,804 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 166 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2024-11-28 02:23:34,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 181 transitions, 1522 flow [2024-11-28 02:23:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-28 02:23:34,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-28 02:23:34,806 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 464 flow. Second operand 5 states and 153 transitions. [2024-11-28 02:23:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 181 transitions, 1522 flow [2024-11-28 02:23:35,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 181 transitions, 1511 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:35,667 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 467 flow [2024-11-28 02:23:35,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-11-28 02:23:35,668 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-28 02:23:35,668 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 467 flow [2024-11-28 02:23:35,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:35,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:35,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:35,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:23:35,668 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 4 more)] === [2024-11-28 02:23:35,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1938524294, now seen corresponding path program 2 times [2024-11-28 02:23:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003368210] [2024-11-28 02:23:35,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:35,689 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:35,691 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:35,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:35,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003368210] [2024-11-28 02:23:35,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003368210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:35,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528365843] [2024-11-28 02:23:35,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:35,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:35,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:35,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:23:35,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:35,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:35,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:35,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:36,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528365843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:36,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-28 02:23:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897153283] [2024-11-28 02:23:36,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:36,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:36,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:36,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:36,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:36,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:36,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:36,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:39,900 INFO L124 PetriNetUnfolderBase]: 35117/42862 cut-off events. [2024-11-28 02:23:39,900 INFO L125 PetriNetUnfolderBase]: For 146659/146711 co-relation queries the response was YES. [2024-11-28 02:23:40,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197117 conditions, 42862 events. 35117/42862 cut-off events. For 146659/146711 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 194688 event pairs, 6301 based on Foata normal form. 917/43271 useless extension candidates. Maximal degree in co-relation 126050. Up to 22291 conditions per place. [2024-11-28 02:23:40,198 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 160 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2024-11-28 02:23:40,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 1483 flow [2024-11-28 02:23:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-28 02:23:40,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-11-28 02:23:40,200 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 467 flow. Second operand 5 states and 151 transitions. [2024-11-28 02:23:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 1483 flow [2024-11-28 02:23:40,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 1470 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 02:23:40,811 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 507 flow [2024-11-28 02:23:40,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-11-28 02:23:40,812 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-28 02:23:40,812 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 507 flow [2024-11-28 02:23:40,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:40,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:40,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:40,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:41,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:23:41,013 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 4 more)] === [2024-11-28 02:23:41,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1105017817, now seen corresponding path program 2 times [2024-11-28 02:23:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:41,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516268456] [2024-11-28 02:23:41,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:41,039 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:41,040 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:41,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:41,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516268456] [2024-11-28 02:23:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516268456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:41,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:23:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421007004] [2024-11-28 02:23:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:41,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:41,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:41,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:41,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:41,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:41,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:41,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:44,463 INFO L124 PetriNetUnfolderBase]: 30549/36864 cut-off events. [2024-11-28 02:23:44,463 INFO L125 PetriNetUnfolderBase]: For 140444/140520 co-relation queries the response was YES. [2024-11-28 02:23:44,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175978 conditions, 36864 events. 30549/36864 cut-off events. For 140444/140520 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 156111 event pairs, 1948 based on Foata normal form. 505/37317 useless extension candidates. Maximal degree in co-relation 158707. Up to 16532 conditions per place. [2024-11-28 02:23:44,728 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 184 selfloop transitions, 9 changer transitions 0/200 dead transitions. [2024-11-28 02:23:44,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 200 transitions, 1779 flow [2024-11-28 02:23:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:23:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 02:23:44,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7043478260869566 [2024-11-28 02:23:44,729 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 507 flow. Second operand 5 states and 162 transitions. [2024-11-28 02:23:44,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 200 transitions, 1779 flow [2024-11-28 02:23:45,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 200 transitions, 1713 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-28 02:23:45,441 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 502 flow [2024-11-28 02:23:45,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-11-28 02:23:45,442 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-28 02:23:45,442 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 502 flow [2024-11-28 02:23:45,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:45,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:45,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:45,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:23:45,442 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 4 more)] === [2024-11-28 02:23:45,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1781341120, now seen corresponding path program 2 times [2024-11-28 02:23:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256061378] [2024-11-28 02:23:45,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:45,461 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:45,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:45,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:45,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256061378] [2024-11-28 02:23:45,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256061378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:45,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009361848] [2024-11-28 02:23:45,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:45,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:45,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:45,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:45,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72322b7-9647-4338-bc43-b3b96abd2d26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:23:45,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:45,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:45,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:45,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:45,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009361848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:46,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:46,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-28 02:23:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060649696] [2024-11-28 02:23:46,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:46,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:46,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:46,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:46,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:23:46,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:46,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:46,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:23:46,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand