./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:57:24,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:57:24,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:57:24,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:57:24,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:57:24,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:57:24,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:57:24,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:57:24,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:57:24,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:57:24,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:57:24,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:57:24,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:57:24,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:57:24,817 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:57:24,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:57:24,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:57:24,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:24,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:24,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:24,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:57:24,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:57:24,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:57:24,821 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_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-11-28 02:57:25,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:57:25,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:57:25,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:57:25,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:57:25,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:57:25,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-28 02:57:28,179 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/data/b5cca2ca9/49059640357b417ebb41780237f3b70b/FLAG91eed52d0 [2024-11-28 02:57:28,594 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:57:28,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-28 02:57:28,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/data/b5cca2ca9/49059640357b417ebb41780237f3b70b/FLAG91eed52d0 [2024-11-28 02:57:28,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/data/b5cca2ca9/49059640357b417ebb41780237f3b70b [2024-11-28 02:57:28,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:57:28,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:57:28,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:28,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:57:28,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:57:28,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fd5550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28, skipping insertion in model container [2024-11-28 02:57:28,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:57:29,092 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_53a19cc0-d3bd-4ce8-9c49-84679f07a315/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-28 02:57:29,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:29,111 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:57:29,162 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_53a19cc0-d3bd-4ce8-9c49-84679f07a315/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-28 02:57:29,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:29,202 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:57:29,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29 WrapperNode [2024-11-28 02:57:29,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:29,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:29,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:57:29,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:57:29,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,244 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-28 02:57:29,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:29,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:57:29,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:57:29,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:57:29,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,271 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:57:29,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,276 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:57:29,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:57:29,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:57:29,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:57:29,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (1/1) ... [2024-11-28 02:57:29,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:29,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:57:29,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:57:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:57:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:57:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:57:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:57:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:57:29,357 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:57:29,498 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:57:29,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:57:29,630 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:57:29,631 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:57:29,724 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:57:29,724 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:57:29,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:29 BoogieIcfgContainer [2024-11-28 02:57:29,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:57:29,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:57:29,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:57:29,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:57:29,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:28" (1/3) ... [2024-11-28 02:57:29,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a19a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:29, skipping insertion in model container [2024-11-28 02:57:29,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:29" (2/3) ... [2024-11-28 02:57:29,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a19a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:29, skipping insertion in model container [2024-11-28 02:57:29,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:29" (3/3) ... [2024-11-28 02:57:29,742 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-11-28 02:57:29,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:57:29,763 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-1.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:57:29,763 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:57:29,828 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:57:29,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-28 02:57:29,905 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-28 02:57:29,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:57:29,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-28 02:57:29,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-28 02:57:29,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-28 02:57:29,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:29,948 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;@45312e31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:29,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 02:57:29,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:57:29,962 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-28 02:57:29,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:57:29,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:29,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:29,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:29,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1043373254, now seen corresponding path program 1 times [2024-11-28 02:57:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:29,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298748512] [2024-11-28 02:57:29,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298748512] [2024-11-28 02:57:30,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298748512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:30,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:57:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051105578] [2024-11-28 02:57:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:30,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:57:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:30,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:57:30,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:57:30,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:30,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:30,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:30,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:30,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:30,953 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-28 02:57:30,953 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:57:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2162 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-11-28 02:57:30,960 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-28 02:57:30,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-28 02:57:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:57:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:57:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-28 02:57:30,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 02:57:30,979 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-28 02:57:30,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-28 02:57:30,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:57:30,992 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-28 02:57:30,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-28 02:57:30,999 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-28 02:57:31,000 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-28 02:57:31,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:31,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:31,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:31,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:57:31,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:31,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1573568646, now seen corresponding path program 1 times [2024-11-28 02:57:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693419874] [2024-11-28 02:57:31,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693419874] [2024-11-28 02:57:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693419874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:31,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891230515] [2024-11-28 02:57:31,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:31,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:57:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:31,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:57:31,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:57:31,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:31,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:31,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:31,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:31,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:31,679 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-28 02:57:31,679 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-28 02:57:31,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2921 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-11-28 02:57:31,690 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-28 02:57:31,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-28 02:57:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:57:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:57:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-28 02:57:31,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-28 02:57:31,694 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-28 02:57:31,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-28 02:57:31,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-28 02:57:31,703 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-28 02:57:31,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-28 02:57:31,704 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-28 02:57:31,704 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-28 02:57:31,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:31,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:31,704 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:31,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:57:31,705 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:31,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1590549516, now seen corresponding path program 2 times [2024-11-28 02:57:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126148340] [2024-11-28 02:57:31,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:31,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:31,726 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:57:31,727 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126148340] [2024-11-28 02:57:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126148340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:31,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:57:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45750909] [2024-11-28 02:57:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:31,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:57:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:31,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:57:31,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:57:31,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:31,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:31,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:31,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:31,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:32,292 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-28 02:57:32,292 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-28 02:57:32,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2530 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-11-28 02:57:32,297 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-28 02:57:32,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-28 02:57:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:57:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:57:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-28 02:57:32,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-28 02:57:32,299 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-28 02:57:32,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-28 02:57:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 02:57:32,311 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-28 02:57:32,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-11-28 02:57:32,312 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-28 02:57:32,313 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-28 02:57:32,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:32,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:32,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:32,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:57:32,314 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:32,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2116420421, now seen corresponding path program 1 times [2024-11-28 02:57:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013796070] [2024-11-28 02:57:32,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:32,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013796070] [2024-11-28 02:57:32,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013796070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:32,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:57:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594144868] [2024-11-28 02:57:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:57:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:32,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:57:32,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:57:32,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:32,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:32,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:32,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:32,877 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-11-28 02:57:32,877 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-11-28 02:57:32,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2875 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-11-28 02:57:32,882 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-11-28 02:57:32,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-11-28 02:57:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:57:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:57:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-28 02:57:32,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-28 02:57:32,884 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-11-28 02:57:32,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-11-28 02:57:32,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-28 02:57:32,895 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-11-28 02:57:32,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-28 02:57:32,896 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-28 02:57:32,896 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-11-28 02:57:32,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:32,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:32,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:57:32,897 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:32,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1571665463, now seen corresponding path program 2 times [2024-11-28 02:57:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578707021] [2024-11-28 02:57:32,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:32,911 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:57:32,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:33,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:33,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578707021] [2024-11-28 02:57:33,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578707021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:33,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:33,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:57:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463847574] [2024-11-28 02:57:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:33,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:57:33,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:33,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:57:33,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:57:33,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:33,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:33,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:33,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:33,455 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-11-28 02:57:33,455 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-11-28 02:57:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4534 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-11-28 02:57:33,467 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-11-28 02:57:33,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-11-28 02:57:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:57:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:57:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-28 02:57:33,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-28 02:57:33,469 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-11-28 02:57:33,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-11-28 02:57:33,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-28 02:57:33,484 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-11-28 02:57:33,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-11-28 02:57:33,486 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-28 02:57:33,487 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-11-28 02:57:33,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:33,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:33,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:33,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:57:33,490 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:33,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1789935611, now seen corresponding path program 3 times [2024-11-28 02:57:33,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:33,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932865079] [2024-11-28 02:57:33,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:33,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:33,507 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:57:33,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932865079] [2024-11-28 02:57:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932865079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:57:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342783166] [2024-11-28 02:57:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:33,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:57:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:33,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:57:33,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:57:33,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:33,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:33,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:33,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:33,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:34,045 INFO L124 PetriNetUnfolderBase]: 463/869 cut-off events. [2024-11-28 02:57:34,045 INFO L125 PetriNetUnfolderBase]: For 5168/5180 co-relation queries the response was YES. [2024-11-28 02:57:34,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 869 events. 463/869 cut-off events. For 5168/5180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4022 event pairs, 71 based on Foata normal form. 57/923 useless extension candidates. Maximal degree in co-relation 3256. Up to 226 conditions per place. [2024-11-28 02:57:34,052 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 22 changer transitions 31/100 dead transitions. [2024-11-28 02:57:34,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 931 flow [2024-11-28 02:57:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:57:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:57:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-28 02:57:34,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-28 02:57:34,053 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 10 states and 125 transitions. [2024-11-28 02:57:34,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 931 flow [2024-11-28 02:57:34,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 865 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-28 02:57:34,069 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 463 flow [2024-11-28 02:57:34,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-11-28 02:57:34,070 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-11-28 02:57:34,070 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 463 flow [2024-11-28 02:57:34,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:34,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:34,070 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:34,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:57:34,070 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:34,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash -458847918, now seen corresponding path program 1 times [2024-11-28 02:57:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:34,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332704588] [2024-11-28 02:57:34,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:34,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:34,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332704588] [2024-11-28 02:57:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332704588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:34,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:34,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:57:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211204268] [2024-11-28 02:57:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:34,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:57:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:34,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:57:34,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:57:34,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:34,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:34,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:34,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:34,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:34,602 INFO L124 PetriNetUnfolderBase]: 472/878 cut-off events. [2024-11-28 02:57:34,602 INFO L125 PetriNetUnfolderBase]: For 6014/6026 co-relation queries the response was YES. [2024-11-28 02:57:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 878 events. 472/878 cut-off events. For 6014/6026 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4070 event pairs, 59 based on Foata normal form. 30/905 useless extension candidates. Maximal degree in co-relation 3421. Up to 160 conditions per place. [2024-11-28 02:57:34,611 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 28 changer transitions 23/99 dead transitions. [2024-11-28 02:57:34,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 99 transitions, 961 flow [2024-11-28 02:57:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:57:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:57:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-28 02:57:34,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-28 02:57:34,613 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 463 flow. Second operand 10 states and 125 transitions. [2024-11-28 02:57:34,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 99 transitions, 961 flow [2024-11-28 02:57:34,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 879 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-28 02:57:34,631 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 543 flow [2024-11-28 02:57:34,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=543, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2024-11-28 02:57:34,633 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-28 02:57:34,633 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 543 flow [2024-11-28 02:57:34,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:34,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:34,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:34,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:57:34,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:34,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1305397707, now seen corresponding path program 1 times [2024-11-28 02:57:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591622797] [2024-11-28 02:57:34,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591622797] [2024-11-28 02:57:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591622797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600789117] [2024-11-28 02:57:34,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:34,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:34,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:34,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:57:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:34,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:57:34,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:35,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600789117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:35,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 02:57:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364466941] [2024-11-28 02:57:35,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:35,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:57:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:35,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:57:35,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:57:35,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:35,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 543 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:35,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:35,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:35,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:35,977 INFO L124 PetriNetUnfolderBase]: 616/1154 cut-off events. [2024-11-28 02:57:35,977 INFO L125 PetriNetUnfolderBase]: For 10826/10838 co-relation queries the response was YES. [2024-11-28 02:57:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 1154 events. 616/1154 cut-off events. For 10826/10838 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5139 event pairs, 161 based on Foata normal form. 75/1228 useless extension candidates. Maximal degree in co-relation 4939. Up to 540 conditions per place. [2024-11-28 02:57:35,987 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 68 selfloop transitions, 19 changer transitions 67/157 dead transitions. [2024-11-28 02:57:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1621 flow [2024-11-28 02:57:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:57:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 02:57:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-11-28 02:57:35,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-11-28 02:57:35,992 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 543 flow. Second operand 19 states and 231 transitions. [2024-11-28 02:57:35,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1621 flow [2024-11-28 02:57:36,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1525 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-11-28 02:57:36,018 INFO L231 Difference]: Finished difference. Result has 94 places, 57 transitions, 680 flow [2024-11-28 02:57:36,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=680, PETRI_PLACES=94, PETRI_TRANSITIONS=57} [2024-11-28 02:57:36,019 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2024-11-28 02:57:36,019 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 57 transitions, 680 flow [2024-11-28 02:57:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:36,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:36,019 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:36,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:57:36,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:36,224 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:36,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1144389585, now seen corresponding path program 2 times [2024-11-28 02:57:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:36,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753614368] [2024-11-28 02:57:36,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:36,241 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:36,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:36,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753614368] [2024-11-28 02:57:36,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753614368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872324022] [2024-11-28 02:57:36,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:36,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:36,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:36,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:36,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:57:36,466 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:36,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:36,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:57:36,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:36,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872324022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:36,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:36,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 02:57:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516809159] [2024-11-28 02:57:36,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:36,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:57:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:36,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:57:36,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:57:36,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:36,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 57 transitions, 680 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:36,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:36,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:37,605 INFO L124 PetriNetUnfolderBase]: 904/1673 cut-off events. [2024-11-28 02:57:37,606 INFO L125 PetriNetUnfolderBase]: For 37654/37666 co-relation queries the response was YES. [2024-11-28 02:57:37,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1673 events. 904/1673 cut-off events. For 37654/37666 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8179 event pairs, 74 based on Foata normal form. 84/1756 useless extension candidates. Maximal degree in co-relation 9459. Up to 321 conditions per place. [2024-11-28 02:57:37,625 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 49 changer transitions 80/221 dead transitions. [2024-11-28 02:57:37,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 221 transitions, 2888 flow [2024-11-28 02:57:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:57:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 02:57:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-28 02:57:37,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-28 02:57:37,627 INFO L175 Difference]: Start difference. First operand has 94 places, 57 transitions, 680 flow. Second operand 27 states and 334 transitions. [2024-11-28 02:57:37,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 221 transitions, 2888 flow [2024-11-28 02:57:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 221 transitions, 2341 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-11-28 02:57:37,677 INFO L231 Difference]: Finished difference. Result has 120 places, 73 transitions, 1085 flow [2024-11-28 02:57:37,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1085, PETRI_PLACES=120, PETRI_TRANSITIONS=73} [2024-11-28 02:57:37,679 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 94 predicate places. [2024-11-28 02:57:37,679 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 73 transitions, 1085 flow [2024-11-28 02:57:37,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:37,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:37,679 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:37,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:37,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:37,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:37,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash -743549746, now seen corresponding path program 1 times [2024-11-28 02:57:37,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:37,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942090040] [2024-11-28 02:57:37,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:38,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942090040] [2024-11-28 02:57:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942090040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868660317] [2024-11-28 02:57:38,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:38,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:38,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:57:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:38,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:57:38,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:38,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868660317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:38,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-28 02:57:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241456122] [2024-11-28 02:57:38,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:38,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:57:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:38,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:57:38,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:57:38,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 73 transitions, 1085 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:39,252 INFO L124 PetriNetUnfolderBase]: 1138/2145 cut-off events. [2024-11-28 02:57:39,252 INFO L125 PetriNetUnfolderBase]: For 88275/88281 co-relation queries the response was YES. [2024-11-28 02:57:39,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14924 conditions, 2145 events. 1138/2145 cut-off events. For 88275/88281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11256 event pairs, 153 based on Foata normal form. 69/2211 useless extension candidates. Maximal degree in co-relation 14864. Up to 490 conditions per place. [2024-11-28 02:57:39,280 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 54 changer transitions 67/223 dead transitions. [2024-11-28 02:57:39,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 223 transitions, 3703 flow [2024-11-28 02:57:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:57:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:57:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-28 02:57:39,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-28 02:57:39,283 INFO L175 Difference]: Start difference. First operand has 120 places, 73 transitions, 1085 flow. Second operand 25 states and 309 transitions. [2024-11-28 02:57:39,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 223 transitions, 3703 flow [2024-11-28 02:57:39,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 223 transitions, 3120 flow, removed 275 selfloop flow, removed 13 redundant places. [2024-11-28 02:57:39,396 INFO L231 Difference]: Finished difference. Result has 138 places, 84 transitions, 1376 flow [2024-11-28 02:57:39,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1376, PETRI_PLACES=138, PETRI_TRANSITIONS=84} [2024-11-28 02:57:39,397 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 112 predicate places. [2024-11-28 02:57:39,398 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 84 transitions, 1376 flow [2024-11-28 02:57:39,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:39,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:39,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:39,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:57:39,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:57:39,603 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:39,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -889755976, now seen corresponding path program 2 times [2024-11-28 02:57:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169754613] [2024-11-28 02:57:39,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:39,615 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:39,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169754613] [2024-11-28 02:57:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169754613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622844708] [2024-11-28 02:57:39,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:57:39,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:39,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:39,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:39,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:57:39,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:57:39,825 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:39,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:57:39,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:39,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622844708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:40,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-28 02:57:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195266906] [2024-11-28 02:57:40,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:40,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:57:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:40,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:57:40,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:57:40,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:40,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 84 transitions, 1376 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:40,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:40,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:41,178 INFO L124 PetriNetUnfolderBase]: 1255/2398 cut-off events. [2024-11-28 02:57:41,178 INFO L125 PetriNetUnfolderBase]: For 140481/140487 co-relation queries the response was YES. [2024-11-28 02:57:41,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18003 conditions, 2398 events. 1255/2398 cut-off events. For 140481/140487 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12868 event pairs, 38 based on Foata normal form. 141/2538 useless extension candidates. Maximal degree in co-relation 17937. Up to 507 conditions per place. [2024-11-28 02:57:41,213 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 81 changer transitions 102/278 dead transitions. [2024-11-28 02:57:41,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 278 transitions, 5284 flow [2024-11-28 02:57:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:57:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 02:57:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-11-28 02:57:41,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-11-28 02:57:41,219 INFO L175 Difference]: Start difference. First operand has 138 places, 84 transitions, 1376 flow. Second operand 30 states and 369 transitions. [2024-11-28 02:57:41,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 278 transitions, 5284 flow [2024-11-28 02:57:41,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 278 transitions, 4507 flow, removed 350 selfloop flow, removed 18 redundant places. [2024-11-28 02:57:41,484 INFO L231 Difference]: Finished difference. Result has 161 places, 105 transitions, 2009 flow [2024-11-28 02:57:41,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2009, PETRI_PLACES=161, PETRI_TRANSITIONS=105} [2024-11-28 02:57:41,485 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2024-11-28 02:57:41,485 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 105 transitions, 2009 flow [2024-11-28 02:57:41,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:41,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:41,486 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:41,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:41,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:57:41,690 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:41,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1794012324, now seen corresponding path program 3 times [2024-11-28 02:57:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:41,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822196525] [2024-11-28 02:57:41,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:41,717 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:57:41,720 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822196525] [2024-11-28 02:57:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822196525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411033149] [2024-11-28 02:57:41,938 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:57:41,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:41,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:41,940 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:41,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:57:42,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:57:42,005 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:42,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:57:42,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:42,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411033149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-28 02:57:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889394972] [2024-11-28 02:57:42,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:42,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:57:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:42,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:57:42,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:57:42,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:42,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 105 transitions, 2009 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:42,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:42,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:42,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:44,212 INFO L124 PetriNetUnfolderBase]: 1723/3189 cut-off events. [2024-11-28 02:57:44,212 INFO L125 PetriNetUnfolderBase]: For 262205/262211 co-relation queries the response was YES. [2024-11-28 02:57:44,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27713 conditions, 3189 events. 1723/3189 cut-off events. For 262205/262211 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16126 event pairs, 42 based on Foata normal form. 96/3284 useless extension candidates. Maximal degree in co-relation 27637. Up to 681 conditions per place. [2024-11-28 02:57:44,252 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 115 changer transitions 135/395 dead transitions. [2024-11-28 02:57:44,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 395 transitions, 8461 flow [2024-11-28 02:57:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 02:57:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 02:57:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-11-28 02:57:44,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-11-28 02:57:44,256 INFO L175 Difference]: Start difference. First operand has 161 places, 105 transitions, 2009 flow. Second operand 46 states and 565 transitions. [2024-11-28 02:57:44,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 395 transitions, 8461 flow [2024-11-28 02:57:44,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 395 transitions, 7145 flow, removed 626 selfloop flow, removed 20 redundant places. [2024-11-28 02:57:44,559 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 3105 flow [2024-11-28 02:57:44,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3105, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2024-11-28 02:57:44,559 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2024-11-28 02:57:44,560 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 3105 flow [2024-11-28 02:57:44,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:44,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:44,560 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:44,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:57:44,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:57:44,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:44,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash -48877329, now seen corresponding path program 4 times [2024-11-28 02:57:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515226990] [2024-11-28 02:57:44,762 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:44,789 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:44,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515226990] [2024-11-28 02:57:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515226990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610228054] [2024-11-28 02:57:45,309 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:57:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:45,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:45,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:57:45,386 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:57:45,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:45,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:57:45,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:45,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610228054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:45,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:45,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 26 [2024-11-28 02:57:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674243277] [2024-11-28 02:57:45,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:45,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:57:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:45,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:57:45,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:57:46,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:46,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 3105 flow. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:46,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:46,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:46,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:48,051 INFO L124 PetriNetUnfolderBase]: 1975/3810 cut-off events. [2024-11-28 02:57:48,051 INFO L125 PetriNetUnfolderBase]: For 477555/477561 co-relation queries the response was YES. [2024-11-28 02:57:48,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37699 conditions, 3810 events. 1975/3810 cut-off events. For 477555/477561 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 20394 event pairs, 421 based on Foata normal form. 87/3894 useless extension candidates. Maximal degree in co-relation 37606. Up to 1483 conditions per place. [2024-11-28 02:57:48,104 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 163 selfloop transitions, 90 changer transitions 115/371 dead transitions. [2024-11-28 02:57:48,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 371 transitions, 10005 flow [2024-11-28 02:57:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 02:57:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-28 02:57:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 450 transitions. [2024-11-28 02:57:48,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-11-28 02:57:48,107 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 3105 flow. Second operand 38 states and 450 transitions. [2024-11-28 02:57:48,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 371 transitions, 10005 flow [2024-11-28 02:57:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 371 transitions, 7187 flow, removed 1367 selfloop flow, removed 29 redundant places. [2024-11-28 02:57:48,903 INFO L231 Difference]: Finished difference. Result has 223 places, 169 transitions, 3327 flow [2024-11-28 02:57:48,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3327, PETRI_PLACES=223, PETRI_TRANSITIONS=169} [2024-11-28 02:57:48,904 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 197 predicate places. [2024-11-28 02:57:48,904 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 169 transitions, 3327 flow [2024-11-28 02:57:48,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:48,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:48,905 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:48,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:49,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:57:49,105 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:49,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2079107123, now seen corresponding path program 5 times [2024-11-28 02:57:49,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530483227] [2024-11-28 02:57:49,106 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:49,129 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 02:57:49,129 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530483227] [2024-11-28 02:57:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530483227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660771387] [2024-11-28 02:57:49,534 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:57:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:49,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:49,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:57:49,603 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 02:57:49,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:49,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:57:49,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:49,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:50,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660771387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:50,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:50,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-28 02:57:50,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551353440] [2024-11-28 02:57:50,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:50,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:57:50,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:50,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:57:50,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:57:50,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:50,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 169 transitions, 3327 flow. Second operand has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:50,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:50,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:50,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:52,773 INFO L124 PetriNetUnfolderBase]: 2488/4979 cut-off events. [2024-11-28 02:57:52,773 INFO L125 PetriNetUnfolderBase]: For 557028/557034 co-relation queries the response was YES. [2024-11-28 02:57:52,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44885 conditions, 4979 events. 2488/4979 cut-off events. For 557028/557034 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 28896 event pairs, 194 based on Foata normal form. 87/5065 useless extension candidates. Maximal degree in co-relation 44791. Up to 1179 conditions per place. [2024-11-28 02:57:52,819 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 156 selfloop transitions, 178 changer transitions 129/466 dead transitions. [2024-11-28 02:57:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 466 transitions, 10830 flow [2024-11-28 02:57:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 02:57:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-28 02:57:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 538 transitions. [2024-11-28 02:57:52,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4981481481481482 [2024-11-28 02:57:52,827 INFO L175 Difference]: Start difference. First operand has 223 places, 169 transitions, 3327 flow. Second operand 45 states and 538 transitions. [2024-11-28 02:57:52,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 466 transitions, 10830 flow [2024-11-28 02:57:53,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 466 transitions, 9673 flow, removed 545 selfloop flow, removed 22 redundant places. [2024-11-28 02:57:53,797 INFO L231 Difference]: Finished difference. Result has 256 places, 226 transitions, 4967 flow [2024-11-28 02:57:53,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4967, PETRI_PLACES=256, PETRI_TRANSITIONS=226} [2024-11-28 02:57:53,798 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-11-28 02:57:53,798 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 226 transitions, 4967 flow [2024-11-28 02:57:53,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:53,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:53,798 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:53,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:57:53,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:57:53,999 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:53,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1774178175, now seen corresponding path program 6 times [2024-11-28 02:57:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670046605] [2024-11-28 02:57:54,000 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:54,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:54,017 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:57:54,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670046605] [2024-11-28 02:57:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670046605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046428838] [2024-11-28 02:57:54,433 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:57:54,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:54,435 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:54,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:57:54,508 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:57:54,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:57:54,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:57:54,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:54,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:57:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046428838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:55,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:57:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-28 02:57:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608060789] [2024-11-28 02:57:55,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:55,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:57:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:55,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:57:55,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:57:55,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:57:55,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 226 transitions, 4967 flow. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:55,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:57:55,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:57:55,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:57:57,727 INFO L124 PetriNetUnfolderBase]: 3127/6190 cut-off events. [2024-11-28 02:57:57,727 INFO L125 PetriNetUnfolderBase]: For 918666/918672 co-relation queries the response was YES. [2024-11-28 02:57:57,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63055 conditions, 6190 events. 3127/6190 cut-off events. For 918666/918672 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 36343 event pairs, 47 based on Foata normal form. 87/6274 useless extension candidates. Maximal degree in co-relation 62951. Up to 1473 conditions per place. [2024-11-28 02:57:57,805 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 184 selfloop transitions, 231 changer transitions 121/539 dead transitions. [2024-11-28 02:57:57,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 539 transitions, 14091 flow [2024-11-28 02:57:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 02:57:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-28 02:57:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 602 transitions. [2024-11-28 02:57:57,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-28 02:57:57,809 INFO L175 Difference]: Start difference. First operand has 256 places, 226 transitions, 4967 flow. Second operand 49 states and 602 transitions. [2024-11-28 02:57:57,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 539 transitions, 14091 flow [2024-11-28 02:57:59,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 539 transitions, 12260 flow, removed 868 selfloop flow, removed 23 redundant places. [2024-11-28 02:57:59,613 INFO L231 Difference]: Finished difference. Result has 294 places, 262 transitions, 6219 flow [2024-11-28 02:57:59,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=6219, PETRI_PLACES=294, PETRI_TRANSITIONS=262} [2024-11-28 02:57:59,614 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2024-11-28 02:57:59,614 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 262 transitions, 6219 flow [2024-11-28 02:57:59,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:57:59,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:57:59,614 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:59,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:57:59,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:57:59,815 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:57:59,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2064098794, now seen corresponding path program 7 times [2024-11-28 02:57:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539074651] [2024-11-28 02:57:59,816 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:57:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:00,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539074651] [2024-11-28 02:58:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539074651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701723375] [2024-11-28 02:58:00,285 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:58:00,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:00,287 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:00,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:58:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:00,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:58:00,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:00,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701723375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:00,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:00,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2024-11-28 02:58:00,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360546905] [2024-11-28 02:58:00,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:00,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:58:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:00,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:58:00,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:58:00,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:58:00,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 262 transitions, 6219 flow. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:00,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:00,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:58:00,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:03,826 INFO L124 PetriNetUnfolderBase]: 3136/6231 cut-off events. [2024-11-28 02:58:03,826 INFO L125 PetriNetUnfolderBase]: For 1142299/1142305 co-relation queries the response was YES. [2024-11-28 02:58:03,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67097 conditions, 6231 events. 3136/6231 cut-off events. For 1142299/1142305 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 36673 event pairs, 38 based on Foata normal form. 123/6353 useless extension candidates. Maximal degree in co-relation 66979. Up to 1467 conditions per place. [2024-11-28 02:58:04,137 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 176 selfloop transitions, 248 changer transitions 139/566 dead transitions. [2024-11-28 02:58:04,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 566 transitions, 15497 flow [2024-11-28 02:58:04,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 02:58:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-28 02:58:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 633 transitions. [2024-11-28 02:58:04,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-11-28 02:58:04,139 INFO L175 Difference]: Start difference. First operand has 294 places, 262 transitions, 6219 flow. Second operand 52 states and 633 transitions. [2024-11-28 02:58:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 566 transitions, 15497 flow [2024-11-28 02:58:06,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 566 transitions, 13513 flow, removed 896 selfloop flow, removed 28 redundant places. [2024-11-28 02:58:06,170 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 6716 flow [2024-11-28 02:58:06,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6716, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2024-11-28 02:58:06,171 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2024-11-28 02:58:06,171 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 6716 flow [2024-11-28 02:58:06,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:06,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:06,171 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:06,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:06,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:06,372 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:58:06,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 716174606, now seen corresponding path program 8 times [2024-11-28 02:58:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:06,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396064471] [2024-11-28 02:58:06,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:06,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:06,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396064471] [2024-11-28 02:58:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396064471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029961806] [2024-11-28 02:58:07,135 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:58:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:07,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:07,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:58:07,272 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:58:07,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:07,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:58:07,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:07,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029961806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:08,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:08,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-28 02:58:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654843058] [2024-11-28 02:58:08,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:08,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 02:58:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:08,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 02:58:08,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:58:08,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-28 02:58:08,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 6716 flow. Second operand has 49 states, 49 states have (on average 7.0) internal successors, (343), 49 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:08,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:08,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-28 02:58:08,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:11,502 INFO L124 PetriNetUnfolderBase]: 3433/6787 cut-off events. [2024-11-28 02:58:11,502 INFO L125 PetriNetUnfolderBase]: For 1333823/1333829 co-relation queries the response was YES. [2024-11-28 02:58:11,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74512 conditions, 6787 events. 3433/6787 cut-off events. For 1333823/1333829 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 40253 event pairs, 102 based on Foata normal form. 42/6828 useless extension candidates. Maximal degree in co-relation 74387. Up to 1599 conditions per place. [2024-11-28 02:58:11,578 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 200 selfloop transitions, 271 changer transitions 117/591 dead transitions. [2024-11-28 02:58:11,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 591 transitions, 16066 flow [2024-11-28 02:58:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 02:58:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-28 02:58:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 631 transitions. [2024-11-28 02:58:11,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5056089743589743 [2024-11-28 02:58:11,580 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 6716 flow. Second operand 52 states and 631 transitions. [2024-11-28 02:58:11,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 591 transitions, 16066 flow [2024-11-28 02:58:14,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 591 transitions, 14016 flow, removed 853 selfloop flow, removed 39 redundant places. [2024-11-28 02:58:14,259 INFO L231 Difference]: Finished difference. Result has 342 places, 308 transitions, 7440 flow [2024-11-28 02:58:14,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7440, PETRI_PLACES=342, PETRI_TRANSITIONS=308} [2024-11-28 02:58:14,260 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-11-28 02:58:14,260 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 308 transitions, 7440 flow [2024-11-28 02:58:14,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.0) internal successors, (343), 49 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:14,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:58:14,260 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:14,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:14,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:58:14,461 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:58:14,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2095901587, now seen corresponding path program 9 times [2024-11-28 02:58:14,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979472865] [2024-11-28 02:58:14,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:14,481 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:58:14,482 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 200 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:58:14,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979472865] [2024-11-28 02:58:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979472865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59414389] [2024-11-28 02:58:14,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:58:14,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:14,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:58:14,732 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:58:14,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:58:14,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:58:14,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:58:14,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:14,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59414389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:14,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:58:14,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-11-28 02:58:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905569948] [2024-11-28 02:58:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:14,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:58:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:14,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:58:14,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:58:14,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-11-28 02:58:14,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 308 transitions, 7440 flow. Second operand has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:14,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:58:14,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-11-28 02:58:14,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:58:21,215 INFO L124 PetriNetUnfolderBase]: 11687/23300 cut-off events. [2024-11-28 02:58:21,215 INFO L125 PetriNetUnfolderBase]: For 3633223/3638516 co-relation queries the response was YES. [2024-11-28 02:58:21,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194165 conditions, 23300 events. 11687/23300 cut-off events. For 3633223/3638516 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 197603 event pairs, 679 based on Foata normal form. 300/20860 useless extension candidates. Maximal degree in co-relation 194043. Up to 4581 conditions per place. [2024-11-28 02:58:21,591 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 384/384 dead transitions. [2024-11-28 02:58:21,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 384 transitions, 7039 flow [2024-11-28 02:58:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:58:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 02:58:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 237 transitions. [2024-11-28 02:58:21,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2024-11-28 02:58:21,592 INFO L175 Difference]: Start difference. First operand has 342 places, 308 transitions, 7440 flow. Second operand 13 states and 237 transitions. [2024-11-28 02:58:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 384 transitions, 7039 flow [2024-11-28 02:58:26,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 384 transitions, 5838 flow, removed 346 selfloop flow, removed 49 redundant places. [2024-11-28 02:58:26,448 INFO L231 Difference]: Finished difference. Result has 298 places, 0 transitions, 0 flow [2024-11-28 02:58:26,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=298, PETRI_TRANSITIONS=0} [2024-11-28 02:58:26,448 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2024-11-28 02:58:26,448 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 0 transitions, 0 flow [2024-11-28 02:58:26,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,451 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-28 02:58:26,451 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-28 02:58:26,451 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-28 02:58:26,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:58:26,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:58:26,652 INFO L422 BasicCegarLoop]: Path program histogram: [9, 3, 2, 2, 1, 1] [2024-11-28 02:58:26,655 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:58:26,656 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:58:26,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:26 BasicIcfg [2024-11-28 02:58:26,661 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:58:26,662 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:58:26,662 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:58:26,662 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:58:26,663 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:29" (3/4) ... [2024-11-28 02:58:26,665 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:58:26,668 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-28 02:58:26,668 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-28 02:58:26,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-28 02:58:26,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-28 02:58:26,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 02:58:26,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:58:26,747 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:58:26,747 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:58:26,747 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:58:26,748 INFO L158 Benchmark]: Toolchain (without parser) took 58106.05ms. Allocated memory was 117.4MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 92.8MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 02:58:26,748 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:58:26,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.73ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 73.2MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:58:26,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.74ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 71.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:58:26,750 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 70.2MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:58:26,750 INFO L158 Benchmark]: RCFGBuilder took 439.66ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 53.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:58:26,751 INFO L158 Benchmark]: TraceAbstraction took 56931.38ms. Allocated memory was 117.4MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 52.7MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 02:58:26,752 INFO L158 Benchmark]: Witness Printer took 85.86ms. Allocated memory is still 5.5GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:58:26,753 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.73ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 73.2MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.74ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 71.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 70.2MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 439.66ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 53.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 56931.38ms. Allocated memory was 117.4MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 52.7MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 85.86ms. Allocated memory is still 5.5GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 56.8s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 43.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5947 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5922 mSDsluCounter, 377 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7134 IncrementalHoareTripleChecker+Invalid, 7497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 7 mSDtfsCounter, 7134 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 739 SyntacticMatches, 16 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10174 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7440occurred in iteration=17, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 1371 ConstructedInterpolants, 0 QuantifiedInterpolants, 5562 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1419 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 39 InterpolantComputations, 8 PerfectInterpolantSequences, 444/2119 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:58:26,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a19cc0-d3bd-4ce8-9c49-84679f07a315/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE