./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd --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-826ab2b [2024-11-13 16:28:28,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:28:28,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:28:28,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:28:28,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:28:28,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:28:28,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:28:28,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:28:28,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:28:28,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:28:28,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:28:28,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:28:28,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:28:28,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:28:28,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:28:28,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:28:28,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:28:28,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:28:28,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:28:28,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:28:28,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:28:28,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:28:28,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:28:28,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:28:28,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:28:28,659 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_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd 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 [2024-11-13 16:28:29,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:28:29,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:28:29,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:28:29,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:28:29,022 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:28:29,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c Unable to find full path for "g++" [2024-11-13 16:28:31,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:28:31,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:28:31,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-13 16:28:31,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/data/50501dc0e/1b3e2b757a21423abc11aa808516ce33/FLAGac7cf885e [2024-11-13 16:28:31,643 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/data/50501dc0e/1b3e2b757a21423abc11aa808516ce33 [2024-11-13 16:28:31,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:28:31,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:28:31,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:28:31,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:28:31,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:28:31,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:31,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3118d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31, skipping insertion in model container [2024-11-13 16:28:31,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:31,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:28:31,916 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_48fbcc01-8861-45d5-a740-d5326ba4a90d/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-11-13 16:28:31,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:28:31,932 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:28:31,966 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_48fbcc01-8861-45d5-a740-d5326ba4a90d/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2024-11-13 16:28:31,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:28:31,985 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:28:31,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31 WrapperNode [2024-11-13 16:28:31,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:28:31,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:28:31,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:28:31,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:28:31,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,027 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-13 16:28:32,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:28:32,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:28:32,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:28:32,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:28:32,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,058 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]. [2024-11-13 16:28:32,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:28:32,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:28:32,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:28:32,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:28:32,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (1/1) ... [2024-11-13 16:28:32,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:28:32,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:32,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:28:32,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:28:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:28:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 16:28:32,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 16:28:32,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 16:28:32,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 16:28:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 16:28:32,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 16:28:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 16:28:32,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 16:28:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:28:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-13 16:28:32,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-13 16:28:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-13 16:28:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-13 16:28:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:28:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:28:32,160 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:28:32,276 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:28:32,278 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:28:32,584 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:28:32,584 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:28:32,810 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:28:32,810 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 16:28:32,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:28:32 BoogieIcfgContainer [2024-11-13 16:28:32,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:28:32,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:28:32,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:28:32,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:28:32,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:28:31" (1/3) ... [2024-11-13 16:28:32,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39678790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:28:32, skipping insertion in model container [2024-11-13 16:28:32,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:31" (2/3) ... [2024-11-13 16:28:32,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39678790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:28:32, skipping insertion in model container [2024-11-13 16:28:32,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:28:32" (3/3) ... [2024-11-13 16:28:32,827 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-11-13 16:28:32,845 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:28:32,847 INFO L154 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. [2024-11-13 16:28:32,847 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:28:32,972 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-13 16:28:33,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-13 16:28:33,105 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-13 16:28:33,107 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 16:28:33,112 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 33 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. [2024-11-13 16:28:33,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-13 16:28:33,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-13 16:28:33,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:28:33,144 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;@67411b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:28:33,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 16:28:33,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:28:33,167 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-13 16:28:33,167 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 16:28:33,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:33,168 INFO L204 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] [2024-11-13 16:28:33,169 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)] === [2024-11-13 16:28:33,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:33,174 INFO L85 PathProgramCache]: Analyzing trace with hash -245746164, now seen corresponding path program 1 times [2024-11-13 16:28:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261379637] [2024-11-13 16:28:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:34,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261379637] [2024-11-13 16:28:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261379637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:28:34,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033116125] [2024-11-13 16:28:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:34,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:28:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:28:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:28:34,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:34,154 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) [2024-11-13 16:28:34,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:34,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:37,149 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-11-13 16:28:37,149 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-11-13 16:28:37,228 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 69723 event pairs, 1570 based on Foata normal form. 1/11912 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-11-13 16:28:37,400 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-11-13 16:28:37,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-13 16:28:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:28:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:28:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-13 16:28:37,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-13 16:28:37,423 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-13 16:28:37,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-13 16:28:37,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-13 16:28:37,470 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-11-13 16:28:37,474 INFO L260 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} [2024-11-13 16:28:37,480 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-13 16:28:37,480 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-11-13 16:28:37,481 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) [2024-11-13 16:28:37,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:37,482 INFO L204 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] [2024-11-13 16:28:37,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:28:37,482 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)] === [2024-11-13 16:28:37,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1931554213, now seen corresponding path program 1 times [2024-11-13 16:28:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:37,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456768787] [2024-11-13 16:28:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:37,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456768787] [2024-11-13 16:28:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456768787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:37,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470621668] [2024-11-13 16:28:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:37,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:37,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:37,876 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) [2024-11-13 16:28:37,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:37,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:37,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:40,827 INFO L124 PetriNetUnfolderBase]: 23915/27764 cut-off events. [2024-11-13 16:28:40,828 INFO L125 PetriNetUnfolderBase]: For 6102/6102 co-relation queries the response was YES. [2024-11-13 16:28:40,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69055 conditions, 27764 events. 23915/27764 cut-off events. For 6102/6102 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 95798 event pairs, 2289 based on Foata normal form. 294/28026 useless extension candidates. Maximal degree in co-relation 18923. Up to 12329 conditions per place. [2024-11-13 16:28:41,010 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-11-13 16:28:41,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-11-13 16:28:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-11-13 16:28:41,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7434782608695653 [2024-11-13 16:28:41,015 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 171 transitions. [2024-11-13 16:28:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-11-13 16:28:41,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:28:41,021 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-11-13 16:28:41,023 INFO L260 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} [2024-11-13 16:28:41,025 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 16:28:41,025 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-11-13 16:28:41,025 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) [2024-11-13 16:28:41,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:41,025 INFO L204 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] [2024-11-13 16:28:41,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:28:41,026 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)] === [2024-11-13 16:28:41,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 425219278, now seen corresponding path program 1 times [2024-11-13 16:28:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:41,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525182710] [2024-11-13 16:28:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525182710] [2024-11-13 16:28:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525182710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:41,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391399299] [2024-11-13 16:28:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:41,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:41,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:41,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 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) [2024-11-13 16:28:41,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:41,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:41,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:43,640 INFO L124 PetriNetUnfolderBase]: 23525/27374 cut-off events. [2024-11-13 16:28:43,641 INFO L125 PetriNetUnfolderBase]: For 19597/19597 co-relation queries the response was YES. [2024-11-13 16:28:43,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77775 conditions, 27374 events. 23525/27374 cut-off events. For 19597/19597 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 95830 event pairs, 1824 based on Foata normal form. 390/27732 useless extension candidates. Maximal degree in co-relation 40172. Up to 11939 conditions per place. [2024-11-13 16:28:43,822 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 105 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-13 16:28:43,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 612 flow [2024-11-13 16:28:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-13 16:28:43,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-13 16:28:43,824 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 169 transitions. [2024-11-13 16:28:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 612 flow [2024-11-13 16:28:43,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:28:43,865 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 209 flow [2024-11-13 16:28:43,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-13 16:28:43,866 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-13 16:28:43,866 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 209 flow [2024-11-13 16:28:43,867 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) [2024-11-13 16:28:43,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:43,867 INFO L204 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] [2024-11-13 16:28:43,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:28:43,867 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)] === [2024-11-13 16:28:43,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash 941079505, now seen corresponding path program 1 times [2024-11-13 16:28:43,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:43,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564839819] [2024-11-13 16:28:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:43,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:44,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:44,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564839819] [2024-11-13 16:28:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564839819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:28:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486898441] [2024-11-13 16:28:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:44,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:28:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:44,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:28:44,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:28:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:44,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:28:44,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:44,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:44,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486898441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:44,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:44,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-13 16:28:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096615567] [2024-11-13 16:28:44,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:44,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:28:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:28:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:28:44,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:44,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 209 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) [2024-11-13 16:28:44,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:44,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:44,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:47,541 INFO L124 PetriNetUnfolderBase]: 31621/37459 cut-off events. [2024-11-13 16:28:47,541 INFO L125 PetriNetUnfolderBase]: For 44333/44333 co-relation queries the response was YES. [2024-11-13 16:28:47,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114043 conditions, 37459 events. 31621/37459 cut-off events. For 44333/44333 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 148037 event pairs, 4757 based on Foata normal form. 768/38044 useless extension candidates. Maximal degree in co-relation 59777. Up to 18036 conditions per place. [2024-11-13 16:28:47,811 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 121 selfloop transitions, 8 changer transitions 0/136 dead transitions. [2024-11-13 16:28:47,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 136 transitions, 844 flow [2024-11-13 16:28:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-11-13 16:28:47,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-11-13 16:28:47,813 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 209 flow. Second operand 5 states and 166 transitions. [2024-11-13 16:28:47,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 136 transitions, 844 flow [2024-11-13 16:28:47,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 136 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:28:47,826 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 257 flow [2024-11-13 16:28:47,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-13 16:28:47,827 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-13 16:28:47,828 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 257 flow [2024-11-13 16:28:47,828 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) [2024-11-13 16:28:47,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:47,828 INFO L204 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] [2024-11-13 16:28:47,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:28:48,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 16:28:48,029 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)] === [2024-11-13 16:28:48,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash -938860313, now seen corresponding path program 2 times [2024-11-13 16:28:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539216022] [2024-11-13 16:28:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539216022] [2024-11-13 16:28:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539216022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825333537] [2024-11-13 16:28:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:48,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:48,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:48,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 257 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) [2024-11-13 16:28:48,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:48,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:48,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:51,149 INFO L124 PetriNetUnfolderBase]: 27995/32987 cut-off events. [2024-11-13 16:28:51,149 INFO L125 PetriNetUnfolderBase]: For 48092/48092 co-relation queries the response was YES. [2024-11-13 16:28:51,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114511 conditions, 32987 events. 27995/32987 cut-off events. For 48092/48092 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 123960 event pairs, 1768 based on Foata normal form. 416/33340 useless extension candidates. Maximal degree in co-relation 61629. Up to 14437 conditions per place. [2024-11-13 16:28:51,363 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 11 changer transitions 0/142 dead transitions. [2024-11-13 16:28:51,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 142 transitions, 927 flow [2024-11-13 16:28:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-11-13 16:28:51,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7086956521739131 [2024-11-13 16:28:51,369 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 257 flow. Second operand 5 states and 163 transitions. [2024-11-13 16:28:51,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 142 transitions, 927 flow [2024-11-13 16:28:51,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 142 transitions, 927 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:28:51,639 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 318 flow [2024-11-13 16:28:51,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-13 16:28:51,640 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-11-13 16:28:51,640 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 318 flow [2024-11-13 16:28:51,640 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) [2024-11-13 16:28:51,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:51,640 INFO L204 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] [2024-11-13 16:28:51,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:28:51,641 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)] === [2024-11-13 16:28:51,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1714789192, now seen corresponding path program 1 times [2024-11-13 16:28:51,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:51,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571993726] [2024-11-13 16:28:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:51,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:51,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571993726] [2024-11-13 16:28:51,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571993726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:51,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128863035] [2024-11-13 16:28:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:51,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:51,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 318 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) [2024-11-13 16:28:51,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:51,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:54,766 INFO L124 PetriNetUnfolderBase]: 27558/32550 cut-off events. [2024-11-13 16:28:54,766 INFO L125 PetriNetUnfolderBase]: For 59522/59522 co-relation queries the response was YES. [2024-11-13 16:28:54,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119424 conditions, 32550 events. 27558/32550 cut-off events. For 59522/59522 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 124121 event pairs, 1425 based on Foata normal form. 437/32924 useless extension candidates. Maximal degree in co-relation 64719. Up to 14434 conditions per place. [2024-11-13 16:28:54,960 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 124 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2024-11-13 16:28:54,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 936 flow [2024-11-13 16:28:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-13 16:28:54,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-13 16:28:54,962 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 318 flow. Second operand 5 states and 161 transitions. [2024-11-13 16:28:54,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 936 flow [2024-11-13 16:28:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 139 transitions, 925 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 16:28:55,277 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 321 flow [2024-11-13 16:28:55,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-11-13 16:28:55,278 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-13 16:28:55,278 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 321 flow [2024-11-13 16:28:55,278 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) [2024-11-13 16:28:55,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:55,279 INFO L204 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] [2024-11-13 16:28:55,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:28:55,279 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)] === [2024-11-13 16:28:55,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1419091321, now seen corresponding path program 1 times [2024-11-13 16:28:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:55,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487693819] [2024-11-13 16:28:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:55,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:55,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487693819] [2024-11-13 16:28:55,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487693819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:55,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:55,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294584224] [2024-11-13 16:28:55,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:55,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:55,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:55,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:55,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 321 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) [2024-11-13 16:28:55,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:55,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:55,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:28:59,142 INFO L124 PetriNetUnfolderBase]: 36429/43893 cut-off events. [2024-11-13 16:28:59,142 INFO L125 PetriNetUnfolderBase]: For 112049/112121 co-relation queries the response was YES. [2024-11-13 16:28:59,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168737 conditions, 43893 events. 36429/43893 cut-off events. For 112049/112121 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 190633 event pairs, 5834 based on Foata normal form. 788/44434 useless extension candidates. Maximal degree in co-relation 96482. Up to 19072 conditions per place. [2024-11-13 16:28:59,398 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-11-13 16:28:59,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 162 transitions, 1254 flow [2024-11-13 16:28:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:28:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:28:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-13 16:28:59,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-11-13 16:28:59,399 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 321 flow. Second operand 5 states and 156 transitions. [2024-11-13 16:28:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 162 transitions, 1254 flow [2024-11-13 16:28:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 162 transitions, 1219 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-13 16:28:59,501 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 365 flow [2024-11-13 16:28:59,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-13 16:28:59,502 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-13 16:28:59,502 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 365 flow [2024-11-13 16:28:59,503 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) [2024-11-13 16:28:59,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:59,503 INFO L204 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] [2024-11-13 16:28:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:28:59,503 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)] === [2024-11-13 16:28:59,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash 369973066, now seen corresponding path program 1 times [2024-11-13 16:28:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401462051] [2024-11-13 16:28:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401462051] [2024-11-13 16:28:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401462051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:28:59,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:28:59,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:28:59,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438761414] [2024-11-13 16:28:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:28:59,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:28:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:28:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:28:59,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:28:59,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 365 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) [2024-11-13 16:28:59,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:28:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:29:03,984 INFO L124 PetriNetUnfolderBase]: 36039/43359 cut-off events. [2024-11-13 16:29:03,984 INFO L125 PetriNetUnfolderBase]: For 111505/111577 co-relation queries the response was YES. [2024-11-13 16:29:04,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181965 conditions, 43359 events. 36039/43359 cut-off events. For 111505/111577 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 183397 event pairs, 1846 based on Foata normal form. 402/43514 useless extension candidates. Maximal degree in co-relation 118317. Up to 18682 conditions per place. [2024-11-13 16:29:04,305 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 153 selfloop transitions, 10 changer transitions 0/170 dead transitions. [2024-11-13 16:29:04,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 170 transitions, 1350 flow [2024-11-13 16:29:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:29:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:29:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-11-13 16:29:04,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-11-13 16:29:04,307 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 365 flow. Second operand 5 states and 154 transitions. [2024-11-13 16:29:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 170 transitions, 1350 flow [2024-11-13 16:29:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 1350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:29:04,948 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 428 flow [2024-11-13 16:29:04,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-13 16:29:04,949 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-13 16:29:04,949 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 428 flow [2024-11-13 16:29:04,949 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) [2024-11-13 16:29:04,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:29:04,950 INFO L204 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] [2024-11-13 16:29:04,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:29:04,950 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)] === [2024-11-13 16:29:04,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash 152213151, now seen corresponding path program 2 times [2024-11-13 16:29:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117254802] [2024-11-13 16:29:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:05,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117254802] [2024-11-13 16:29:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117254802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381014143] [2024-11-13 16:29:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:05,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:05,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:29:05,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 428 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) [2024-11-13 16:29:05,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:29:05,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:29:05,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:29:08,735 INFO L124 PetriNetUnfolderBase]: 32297/38829 cut-off events. [2024-11-13 16:29:08,735 INFO L125 PetriNetUnfolderBase]: For 110056/110128 co-relation queries the response was YES. [2024-11-13 16:29:08,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170112 conditions, 38829 events. 32297/38829 cut-off events. For 110056/110128 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 160500 event pairs, 2185 based on Foata normal form. 398/38980 useless extension candidates. Maximal degree in co-relation 110766. Up to 16530 conditions per place. [2024-11-13 16:29:08,957 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 152 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2024-11-13 16:29:08,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 168 transitions, 1359 flow [2024-11-13 16:29:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:29:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:29:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-11-13 16:29:08,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-11-13 16:29:08,959 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 428 flow. Second operand 5 states and 154 transitions. [2024-11-13 16:29:08,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 168 transitions, 1359 flow [2024-11-13 16:29:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 168 transitions, 1346 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-13 16:29:10,158 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 428 flow [2024-11-13 16:29:10,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-11-13 16:29:10,159 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-11-13 16:29:10,159 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 428 flow [2024-11-13 16:29:10,159 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) [2024-11-13 16:29:10,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:29:10,159 INFO L204 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] [2024-11-13 16:29:10,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:29:10,159 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)] === [2024-11-13 16:29:10,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1659759044, now seen corresponding path program 2 times [2024-11-13 16:29:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062091978] [2024-11-13 16:29:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:10,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:10,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:10,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062091978] [2024-11-13 16:29:10,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062091978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:10,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732506650] [2024-11-13 16:29:10,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:29:10,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:10,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:10,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:10,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:29:10,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:29:10,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:29:10,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:29:10,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:29:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:10,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:29:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:10,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732506650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:29:10,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:29:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-13 16:29:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942170193] [2024-11-13 16:29:10,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:29:10,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:29:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:29:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:29:10,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:29:10,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-13 16:29:10,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:29:10,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:29:10,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:29:15,601 INFO L124 PetriNetUnfolderBase]: 31525/38201 cut-off events. [2024-11-13 16:29:15,602 INFO L125 PetriNetUnfolderBase]: For 111750/111822 co-relation queries the response was YES. [2024-11-13 16:29:15,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170732 conditions, 38201 events. 31525/38201 cut-off events. For 111750/111822 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 166145 event pairs, 5456 based on Foata normal form. 784/38738 useless extension candidates. Maximal degree in co-relation 111181. Up to 19731 conditions per place. [2024-11-13 16:29:15,882 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 147 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2024-11-13 16:29:15,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 162 transitions, 1322 flow [2024-11-13 16:29:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:29:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:29:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-13 16:29:15,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-11-13 16:29:15,886 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 428 flow. Second operand 5 states and 151 transitions. [2024-11-13 16:29:15,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 162 transitions, 1322 flow [2024-11-13 16:29:16,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 162 transitions, 1313 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 16:29:16,170 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 469 flow [2024-11-13 16:29:16,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-11-13 16:29:16,171 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-13 16:29:16,172 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 469 flow [2024-11-13 16:29:16,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-13 16:29:16,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:29:16,172 INFO L204 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] [2024-11-13 16:29:16,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:29:16,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:29:16,373 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)] === [2024-11-13 16:29:16,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -646460664, now seen corresponding path program 2 times [2024-11-13 16:29:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:16,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521710260] [2024-11-13 16:29:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:16,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521710260] [2024-11-13 16:29:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521710260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367862422] [2024-11-13 16:29:16,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:29:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:16,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:16,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:29:16,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:29:16,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:29:16,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:29:16,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:29:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:16,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:29:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367862422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:29:17,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:29:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-13 16:29:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047566432] [2024-11-13 16:29:17,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:29:17,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:29:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:29:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:29:17,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:29:17,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 469 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) [2024-11-13 16:29:17,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:29:17,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:29:17,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:29:20,875 INFO L124 PetriNetUnfolderBase]: 30541/37013 cut-off events. [2024-11-13 16:29:20,875 INFO L125 PetriNetUnfolderBase]: For 115195/115195 co-relation queries the response was YES. [2024-11-13 16:29:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172965 conditions, 37013 events. 30541/37013 cut-off events. For 115195/115195 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 161770 event pairs, 5914 based on Foata normal form. 984/37858 useless extension candidates. Maximal degree in co-relation 155503. Up to 20395 conditions per place. [2024-11-13 16:29:21,210 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 167 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2024-11-13 16:29:21,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 182 transitions, 1554 flow [2024-11-13 16:29:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:29:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:29:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-13 16:29:21,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2024-11-13 16:29:21,212 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 469 flow. Second operand 5 states and 159 transitions. [2024-11-13 16:29:21,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 182 transitions, 1554 flow [2024-11-13 16:29:22,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 182 transitions, 1492 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-13 16:29:22,249 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 500 flow [2024-11-13 16:29:22,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-11-13 16:29:22,250 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-13 16:29:22,250 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 500 flow [2024-11-13 16:29:22,251 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) [2024-11-13 16:29:22,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:29:22,251 INFO L204 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] [2024-11-13 16:29:22,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:29:22,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48fbcc01-8861-45d5-a740-d5326ba4a90d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:22,452 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)] === [2024-11-13 16:29:22,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 798473273, now seen corresponding path program 2 times [2024-11-13 16:29:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:22,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888577656] [2024-11-13 16:29:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888577656] [2024-11-13 16:29:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888577656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:22,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:22,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:22,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025392079] [2024-11-13 16:29:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:22,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:22,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:29:22,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 500 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) [2024-11-13 16:29:22,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:29:22,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:29:22,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:29:25,812 INFO L124 PetriNetUnfolderBase]: 29565/35979 cut-off events. [2024-11-13 16:29:25,812 INFO L125 PetriNetUnfolderBase]: For 131961/131985 co-relation queries the response was YES. [2024-11-13 16:29:25,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172414 conditions, 35979 events. 29565/35979 cut-off events. For 131961/131985 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 161953 event pairs, 7482 based on Foata normal form. 984/36848 useless extension candidates. Maximal degree in co-relation 155879. Up to 19791 conditions per place. [2024-11-13 16:29:26,041 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2024-11-13 16:29:26,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 214 transitions, 1853 flow [2024-11-13 16:29:26,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:29:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:29:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-13 16:29:26,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-11-13 16:29:26,042 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 500 flow. Second operand 5 states and 170 transitions. [2024-11-13 16:29:26,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 214 transitions, 1853 flow [2024-11-13 16:29:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 214 transitions, 1791 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-13 16:29:26,272 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 530 flow [2024-11-13 16:29:26,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-11-13 16:29:26,273 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-11-13 16:29:26,273 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 530 flow [2024-11-13 16:29:26,274 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) [2024-11-13 16:29:26,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:29:26,274 INFO L204 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] [2024-11-13 16:29:26,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:29:26,274 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 16:29:26,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 497201780, now seen corresponding path program 2 times [2024-11-13 16:29:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:26,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643347152] [2024-11-13 16:29:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643347152] [2024-11-13 16:29:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643347152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:26,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:26,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56705457] [2024-11-13 16:29:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:26,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:26,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-13 16:29:26,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 530 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) [2024-11-13 16:29:26,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:29:26,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-13 16:29:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand