./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC --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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:56:39,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:56:39,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:56:39,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:56:39,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:56:39,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:56:39,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:56:39,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:56:39,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:56:39,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:56:39,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:56:39,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:56:39,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:56:39,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:56:39,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:56:39,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:56:39,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:56:39,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:56:39,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:56:39,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:56:39,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:56:39,652 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:56:39,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:56:39,652 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:56:39,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:39,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:39,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:39,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:39,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:56:39,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:56:39,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:56:39,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:56:39,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:39,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:56:39,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:56:39,654 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:56:39,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:56:39,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:56:39,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:56:39,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:56:39,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:56:39,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:56:39,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:56:39,656 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_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC 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 -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-24 01:56:40,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:56:40,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:56:40,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:56:40,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:56:40,089 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:56:40,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-24 01:56:43,609 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/data/840bd4551/b95c0c4b441c42a3a60ca80d6a5f39a2/FLAG5bf61f0ca [2024-11-24 01:56:43,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:56:43,965 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-24 01:56:43,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/data/840bd4551/b95c0c4b441c42a3a60ca80d6a5f39a2/FLAG5bf61f0ca [2024-11-24 01:56:43,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/data/840bd4551/b95c0c4b441c42a3a60ca80d6a5f39a2 [2024-11-24 01:56:43,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:56:43,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:56:43,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:44,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:56:44,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:56:44,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:43" (1/1) ... [2024-11-24 01:56:44,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516a7216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44, skipping insertion in model container [2024-11-24 01:56:44,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:43" (1/1) ... [2024-11-24 01:56:44,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:56:44,307 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_05d57ba6-0fef-4513-891b-188affceb43e/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-24 01:56:44,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:44,343 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:56:44,384 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_05d57ba6-0fef-4513-891b-188affceb43e/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-24 01:56:44,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:56:44,420 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:56:44,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44 WrapperNode [2024-11-24 01:56:44,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:56:44,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:44,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:56:44,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:56:44,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,483 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 264 [2024-11-24 01:56:44,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:56:44,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:56:44,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:56:44,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:56:44,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,517 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-24 01:56:44,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,527 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:56:44,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:56:44,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:56:44,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:56:44,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (1/1) ... [2024-11-24 01:56:44,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:56:44,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:44,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:56:44,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:56:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:56:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:56:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:56:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:56:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:56:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:56:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:56:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:56:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:56:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:56:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:56:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 01:56:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 01:56:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:56:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:56:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:56:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:56:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:56:44,630 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:56:44,816 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:56:44,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:56:45,486 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:56:45,487 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:56:46,105 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:56:46,106 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-24 01:56:46,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:46 BoogieIcfgContainer [2024-11-24 01:56:46,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:56:46,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:56:46,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:56:46,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:56:46,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:56:43" (1/3) ... [2024-11-24 01:56:46,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43da33c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:46, skipping insertion in model container [2024-11-24 01:56:46,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:44" (2/3) ... [2024-11-24 01:56:46,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43da33c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:46, skipping insertion in model container [2024-11-24 01:56:46,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:46" (3/3) ... [2024-11-24 01:56:46,121 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-24 01:56:46,140 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:56:46,142 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-dot-product.wvr.c that has 4 procedures, 40 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2024-11-24 01:56:46,142 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:56:46,249 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 01:56:46,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 50 transitions, 121 flow [2024-11-24 01:56:46,375 INFO L124 PetriNetUnfolderBase]: 11/47 cut-off events. [2024-11-24 01:56:46,378 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 01:56:46,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 11/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-24 01:56:46,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 50 transitions, 121 flow [2024-11-24 01:56:46,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 46 transitions, 110 flow [2024-11-24 01:56:46,410 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:56:46,430 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;@15d14ac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:56:46,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-24 01:56:46,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:56:46,470 INFO L124 PetriNetUnfolderBase]: 11/45 cut-off events. [2024-11-24 01:56:46,470 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 01:56:46,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:46,471 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:46,472 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:46,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash -308444722, now seen corresponding path program 1 times [2024-11-24 01:56:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688237597] [2024-11-24 01:56:46,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:47,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:47,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688237597] [2024-11-24 01:56:47,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688237597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:47,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:47,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:56:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081628200] [2024-11-24 01:56:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:47,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:56:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:47,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:56:47,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:56:47,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-24 01:56:47,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2024-11-24 01:56:47,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:47,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-24 01:56:47,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:48,655 INFO L124 PetriNetUnfolderBase]: 3930/5586 cut-off events. [2024-11-24 01:56:48,656 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2024-11-24 01:56:48,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11227 conditions, 5586 events. 3930/5586 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 28067 event pairs, 1062 based on Foata normal form. 595/4981 useless extension candidates. Maximal degree in co-relation 10473. Up to 3464 conditions per place. [2024-11-24 01:56:48,730 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 63 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2024-11-24 01:56:48,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 313 flow [2024-11-24 01:56:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:56:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:56:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-24 01:56:48,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-24 01:56:48,759 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 110 flow. Second operand 3 states and 96 transitions. [2024-11-24 01:56:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 313 flow [2024-11-24 01:56:48,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 291 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-24 01:56:48,785 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 118 flow [2024-11-24 01:56:48,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2024-11-24 01:56:48,794 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-11-24 01:56:48,796 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 118 flow [2024-11-24 01:56:48,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2024-11-24 01:56:48,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:48,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:48,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:56:48,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:48,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:48,800 INFO L85 PathProgramCache]: Analyzing trace with hash 760532416, now seen corresponding path program 1 times [2024-11-24 01:56:48,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:48,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928626760] [2024-11-24 01:56:48,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:48,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:49,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928626760] [2024-11-24 01:56:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928626760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:49,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:56:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120688648] [2024-11-24 01:56:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:49,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:56:49,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:49,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:56:49,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:56:49,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-24 01:56:49,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-24 01:56:49,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:49,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-24 01:56:49,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:50,033 INFO L124 PetriNetUnfolderBase]: 3931/5600 cut-off events. [2024-11-24 01:56:50,033 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-11-24 01:56:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11897 conditions, 5600 events. 3931/5600 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 28479 event pairs, 2711 based on Foata normal form. 0/4377 useless extension candidates. Maximal degree in co-relation 3892. Up to 5343 conditions per place. [2024-11-24 01:56:50,080 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2024-11-24 01:56:50,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 214 flow [2024-11-24 01:56:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:56:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:56:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-24 01:56:50,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.355 [2024-11-24 01:56:50,083 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 118 flow. Second operand 4 states and 71 transitions. [2024-11-24 01:56:50,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 214 flow [2024-11-24 01:56:50,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:56:50,088 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 128 flow [2024-11-24 01:56:50,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-24 01:56:50,089 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-11-24 01:56:50,090 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 128 flow [2024-11-24 01:56:50,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-24 01:56:50,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:50,092 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:50,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:56:50,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:50,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -181474736, now seen corresponding path program 1 times [2024-11-24 01:56:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471916946] [2024-11-24 01:56:50,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:50,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:50,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471916946] [2024-11-24 01:56:50,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471916946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:50,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:50,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:56:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50514909] [2024-11-24 01:56:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:50,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:56:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:50,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:56:50,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:56:50,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-24 01:56:50,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-11-24 01:56:50,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:50,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-24 01:56:50,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:51,251 INFO L124 PetriNetUnfolderBase]: 4432/6287 cut-off events. [2024-11-24 01:56:51,253 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2024-11-24 01:56:51,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13074 conditions, 6287 events. 4432/6287 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 32310 event pairs, 1316 based on Foata normal form. 0/4982 useless extension candidates. Maximal degree in co-relation 13060. Up to 3524 conditions per place. [2024-11-24 01:56:51,299 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 61 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-24 01:56:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 312 flow [2024-11-24 01:56:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:56:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:56:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-24 01:56:51,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-24 01:56:51,302 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 128 flow. Second operand 4 states and 88 transitions. [2024-11-24 01:56:51,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 312 flow [2024-11-24 01:56:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-24 01:56:51,309 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 143 flow [2024-11-24 01:56:51,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-24 01:56:51,310 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-11-24 01:56:51,310 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 143 flow [2024-11-24 01:56:51,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-11-24 01:56:51,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:51,311 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:51,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:56:51,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:51,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -197535109, now seen corresponding path program 1 times [2024-11-24 01:56:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029690735] [2024-11-24 01:56:51,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:51,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:56:51,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029690735] [2024-11-24 01:56:51,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029690735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910691875] [2024-11-24 01:56:51,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:51,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:51,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:51,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:56:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:51,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:56:51,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:56:51,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:56:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:56:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910691875] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:56:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-24 01:56:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100658091] [2024-11-24 01:56:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:51,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:56:51,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:51,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:56:51,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:56:51,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-24 01:56:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-24 01:56:51,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:51,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-24 01:56:51,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:52,827 INFO L124 PetriNetUnfolderBase]: 5022/7123 cut-off events. [2024-11-24 01:56:52,827 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-11-24 01:56:52,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16466 conditions, 7123 events. 5022/7123 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 37578 event pairs, 1409 based on Foata normal form. 0/5886 useless extension candidates. Maximal degree in co-relation 16447. Up to 4218 conditions per place. [2024-11-24 01:56:52,879 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 64 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-11-24 01:56:52,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 357 flow [2024-11-24 01:56:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:56:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:56:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-11-24 01:56:52,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.392 [2024-11-24 01:56:52,885 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 143 flow. Second operand 5 states and 98 transitions. [2024-11-24 01:56:52,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 357 flow [2024-11-24 01:56:52,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:56:52,900 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 162 flow [2024-11-24 01:56:52,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-11-24 01:56:52,901 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-11-24 01:56:52,902 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 162 flow [2024-11-24 01:56:52,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-24 01:56:52,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:52,903 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:52,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:53,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:53,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:53,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1268628254, now seen corresponding path program 1 times [2024-11-24 01:56:53,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383365714] [2024-11-24 01:56:53,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:53,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383365714] [2024-11-24 01:56:53,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383365714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:53,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:53,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:56:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449132316] [2024-11-24 01:56:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:53,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:56:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:53,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:56:53,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:56:53,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-24 01:56:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:56:53,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:53,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-24 01:56:53,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:55,554 INFO L124 PetriNetUnfolderBase]: 9996/13934 cut-off events. [2024-11-24 01:56:55,555 INFO L125 PetriNetUnfolderBase]: For 6824/6824 co-relation queries the response was YES. [2024-11-24 01:56:55,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35160 conditions, 13934 events. 9996/13934 cut-off events. For 6824/6824 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 76147 event pairs, 5933 based on Foata normal form. 0/12104 useless extension candidates. Maximal degree in co-relation 35137. Up to 7669 conditions per place. [2024-11-24 01:56:55,657 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 124 selfloop transitions, 8 changer transitions 0/135 dead transitions. [2024-11-24 01:56:55,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 135 transitions, 691 flow [2024-11-24 01:56:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:56:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:56:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-24 01:56:55,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-24 01:56:55,659 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 162 flow. Second operand 6 states and 153 transitions. [2024-11-24 01:56:55,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 135 transitions, 691 flow [2024-11-24 01:56:55,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 135 transitions, 682 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:56:55,715 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 226 flow [2024-11-24 01:56:55,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-24 01:56:55,717 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-11-24 01:56:55,718 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 226 flow [2024-11-24 01:56:55,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:56:55,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:55,719 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:55,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:56:55,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:55,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2088222110, now seen corresponding path program 1 times [2024-11-24 01:56:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430803689] [2024-11-24 01:56:55,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:56:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430803689] [2024-11-24 01:56:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430803689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:56,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:56:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115748080] [2024-11-24 01:56:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:56,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:56:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:56,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:56:56,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:56:56,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-24 01:56:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:56:56,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:56,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-24 01:56:56,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:56:57,628 INFO L124 PetriNetUnfolderBase]: 8807/12243 cut-off events. [2024-11-24 01:56:57,629 INFO L125 PetriNetUnfolderBase]: For 11137/11326 co-relation queries the response was YES. [2024-11-24 01:56:57,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33261 conditions, 12243 events. 8807/12243 cut-off events. For 11137/11326 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 64213 event pairs, 5542 based on Foata normal form. 189/10943 useless extension candidates. Maximal degree in co-relation 33234. Up to 7624 conditions per place. [2024-11-24 01:56:57,721 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 108 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-24 01:56:57,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 686 flow [2024-11-24 01:56:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:56:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:56:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-11-24 01:56:57,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-24 01:56:57,724 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 226 flow. Second operand 6 states and 140 transitions. [2024-11-24 01:56:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 686 flow [2024-11-24 01:56:57,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 120 transitions, 682 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 01:56:57,749 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 279 flow [2024-11-24 01:56:57,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-24 01:56:57,750 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-11-24 01:56:57,750 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 279 flow [2024-11-24 01:56:57,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:56:57,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:56:57,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:57,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:56:57,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:56:57,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -658128732, now seen corresponding path program 1 times [2024-11-24 01:56:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101725165] [2024-11-24 01:56:57,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101725165] [2024-11-24 01:56:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101725165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36978615] [2024-11-24 01:56:58,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:58,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:58,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:58,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:56:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:58,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:56:58,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:58,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-24 01:56:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:58,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:56:58,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-24 01:56:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:56:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36978615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:56:58,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:56:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-24 01:56:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397082053] [2024-11-24 01:56:58,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:56:58,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:56:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:58,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:56:58,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:56:58,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-24 01:56:58,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 279 flow. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 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) [2024-11-24 01:56:58,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:56:58,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-24 01:56:58,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:00,835 INFO L124 PetriNetUnfolderBase]: 13231/18623 cut-off events. [2024-11-24 01:57:00,836 INFO L125 PetriNetUnfolderBase]: For 18738/18854 co-relation queries the response was YES. [2024-11-24 01:57:00,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53918 conditions, 18623 events. 13231/18623 cut-off events. For 18738/18854 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 106755 event pairs, 7388 based on Foata normal form. 116/16515 useless extension candidates. Maximal degree in co-relation 53887. Up to 7669 conditions per place. [2024-11-24 01:57:00,994 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 136 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2024-11-24 01:57:00,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 951 flow [2024-11-24 01:57:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:57:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:57:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-11-24 01:57:01,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-11-24 01:57:01,000 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 279 flow. Second operand 7 states and 161 transitions. [2024-11-24 01:57:01,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 951 flow [2024-11-24 01:57:01,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 155 transitions, 946 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:57:01,173 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 383 flow [2024-11-24 01:57:01,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-24 01:57:01,174 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-11-24 01:57:01,174 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 383 flow [2024-11-24 01:57:01,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 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) [2024-11-24 01:57:01,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:01,175 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:01,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:57:01,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:01,381 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:57:01,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1856267746, now seen corresponding path program 1 times [2024-11-24 01:57:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788167789] [2024-11-24 01:57:01,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:57:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788167789] [2024-11-24 01:57:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788167789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106273864] [2024-11-24 01:57:01,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:01,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:01,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:01,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:01,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:57:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:02,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:57:02,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:02,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-24 01:57:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:57:02,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:57:02,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-24 01:57:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:57:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106273864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:57:02,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:57:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-24 01:57:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803440780] [2024-11-24 01:57:02,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:57:02,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:57:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:02,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:57:02,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:57:02,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 50 [2024-11-24 01:57:02,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 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) [2024-11-24 01:57:02,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:02,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 50 [2024-11-24 01:57:02,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:04,320 INFO L124 PetriNetUnfolderBase]: 12016/16779 cut-off events. [2024-11-24 01:57:04,320 INFO L125 PetriNetUnfolderBase]: For 32915/33482 co-relation queries the response was YES. [2024-11-24 01:57:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53521 conditions, 16779 events. 12016/16779 cut-off events. For 32915/33482 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 92615 event pairs, 7043 based on Foata normal form. 567/15439 useless extension candidates. Maximal degree in co-relation 53486. Up to 7624 conditions per place. [2024-11-24 01:57:04,631 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 120 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-11-24 01:57:04,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 140 transitions, 1003 flow [2024-11-24 01:57:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:57:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:57:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-11-24 01:57:04,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-11-24 01:57:04,634 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 383 flow. Second operand 7 states and 148 transitions. [2024-11-24 01:57:04,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 140 transitions, 1003 flow [2024-11-24 01:57:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 140 transitions, 980 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-24 01:57:04,795 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 452 flow [2024-11-24 01:57:04,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-11-24 01:57:04,796 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-11-24 01:57:04,796 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 452 flow [2024-11-24 01:57:04,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 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) [2024-11-24 01:57:04,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:04,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:04,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:57:04,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 01:57:04,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:57:04,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1203444104, now seen corresponding path program 2 times [2024-11-24 01:57:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990081809] [2024-11-24 01:57:04,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:57:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:05,069 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:57:05,069 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:57:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:57:06,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990081809] [2024-11-24 01:57:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990081809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:57:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152638968] [2024-11-24 01:57:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:06,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:57:06,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:06,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:57:06,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:57:06,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-24 01:57:06,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 452 flow. Second operand has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 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) [2024-11-24 01:57:06,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:06,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-24 01:57:06,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:14,245 INFO L124 PetriNetUnfolderBase]: 26313/36177 cut-off events. [2024-11-24 01:57:14,246 INFO L125 PetriNetUnfolderBase]: For 60910/60910 co-relation queries the response was YES. [2024-11-24 01:57:14,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119373 conditions, 36177 events. 26313/36177 cut-off events. For 60910/60910 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 212713 event pairs, 8037 based on Foata normal form. 0/31710 useless extension candidates. Maximal degree in co-relation 119335. Up to 17184 conditions per place. [2024-11-24 01:57:14,452 INFO L140 encePairwiseOnDemand]: 32/50 looper letters, 318 selfloop transitions, 50 changer transitions 0/370 dead transitions. [2024-11-24 01:57:14,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 370 transitions, 2552 flow [2024-11-24 01:57:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:57:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 01:57:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 365 transitions. [2024-11-24 01:57:14,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-11-24 01:57:14,455 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 452 flow. Second operand 16 states and 365 transitions. [2024-11-24 01:57:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 370 transitions, 2552 flow [2024-11-24 01:57:15,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 370 transitions, 2422 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-11-24 01:57:15,190 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 904 flow [2024-11-24 01:57:15,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=904, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-11-24 01:57:15,191 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-11-24 01:57:15,191 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 904 flow [2024-11-24 01:57:15,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 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) [2024-11-24 01:57:15,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:15,192 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:15,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:57:15,192 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:57:15,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1759698516, now seen corresponding path program 2 times [2024-11-24 01:57:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:15,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524583910] [2024-11-24 01:57:15,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:57:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:15,237 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:57:15,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:57:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:57:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524583910] [2024-11-24 01:57:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524583910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90087389] [2024-11-24 01:57:16,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:57:16,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:16,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:16,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:16,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:57:16,186 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:57:16,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:57:16,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:57:16,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:16,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-24 01:57:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:57:16,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:57:16,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:57:16,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-24 01:57:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:57:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90087389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:57:17,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:57:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2024-11-24 01:57:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421861935] [2024-11-24 01:57:17,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:57:17,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 01:57:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:17,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 01:57:17,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:57:17,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-24 01:57:17,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 904 flow. Second operand has 36 states, 36 states have (on average 7.166666666666667) internal successors, (258), 36 states have internal predecessors, (258), 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) [2024-11-24 01:57:17,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:17,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-24 01:57:17,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:57:32,881 INFO L124 PetriNetUnfolderBase]: 75964/104690 cut-off events. [2024-11-24 01:57:32,882 INFO L125 PetriNetUnfolderBase]: For 308183/308183 co-relation queries the response was YES. [2024-11-24 01:57:33,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405092 conditions, 104690 events. 75964/104690 cut-off events. For 308183/308183 co-relation queries the response was YES. Maximal size of possible extension queue 3166. Compared 714676 event pairs, 8691 based on Foata normal form. 0/92811 useless extension candidates. Maximal degree in co-relation 316143. Up to 15097 conditions per place. [2024-11-24 01:57:33,932 INFO L140 encePairwiseOnDemand]: 29/50 looper letters, 901 selfloop transitions, 142 changer transitions 152/1197 dead transitions. [2024-11-24 01:57:33,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 1197 transitions, 11304 flow [2024-11-24 01:57:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-24 01:57:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-24 01:57:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 889 transitions. [2024-11-24 01:57:33,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-11-24 01:57:33,938 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 904 flow. Second operand 42 states and 889 transitions. [2024-11-24 01:57:33,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 1197 transitions, 11304 flow [2024-11-24 01:57:42,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 1197 transitions, 11087 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-11-24 01:57:42,248 INFO L231 Difference]: Finished difference. Result has 168 places, 239 transitions, 2514 flow [2024-11-24 01:57:42,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2514, PETRI_PLACES=168, PETRI_TRANSITIONS=239} [2024-11-24 01:57:42,250 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 123 predicate places. [2024-11-24 01:57:42,250 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 239 transitions, 2514 flow [2024-11-24 01:57:42,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.166666666666667) internal successors, (258), 36 states have internal predecessors, (258), 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) [2024-11-24 01:57:42,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:57:42,250 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:42,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:57:42,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:57:42,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 01:57:42,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 821184366, now seen corresponding path program 3 times [2024-11-24 01:57:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301513027] [2024-11-24 01:57:42,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:57:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:42,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 01:57:42,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:57:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:57:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301513027] [2024-11-24 01:57:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301513027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269154900] [2024-11-24 01:57:43,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:57:43,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:43,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:43,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d57ba6-0fef-4513-891b-188affceb43e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:57:43,779 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 01:57:43,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:57:43,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:57:43,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:44,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-24 01:57:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:57:44,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:57:44,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:57:44,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2024-11-24 01:57:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:57:44,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269154900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:57:44,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:57:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 35 [2024-11-24 01:57:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907393734] [2024-11-24 01:57:44,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:57:44,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 01:57:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:44,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 01:57:44,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:57:44,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 50 [2024-11-24 01:57:44,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 239 transitions, 2514 flow. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 36 states have internal predecessors, (262), 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) [2024-11-24 01:57:44,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:57:44,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 50 [2024-11-24 01:57:44,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand