./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:15:57,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:15:57,948 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 13:15:57,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:15:57,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:15:57,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:15:57,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:15:57,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:15:57,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:15:57,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:15:57,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:15:57,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:15:57,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:15:57,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:15:57,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:15:57,981 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:15:57,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:15:57,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:15:57,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:15:57,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:15:57,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:15:57,983 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_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1 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 ! overflow) ) 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-12-02 13:15:58,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:15:58,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:15:58,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:15:58,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:15:58,246 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:15:58,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-12-02 13:16:01,062 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/data/6016418db/b5e20b66af2b49d685a7bba4f9822a3c/FLAG72ffadb43 [2024-12-02 13:16:01,259 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:16:01,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-12-02 13:16:01,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/data/6016418db/b5e20b66af2b49d685a7bba4f9822a3c/FLAG72ffadb43 [2024-12-02 13:16:01,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/data/6016418db/b5e20b66af2b49d685a7bba4f9822a3c [2024-12-02 13:16:01,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:16:01,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:16:01,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:16:01,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:16:01,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:16:01,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11819138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01, skipping insertion in model container [2024-12-02 13:16:01,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:16:01,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:16:01,483 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:16:01,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:16:01,525 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:16:01,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01 WrapperNode [2024-12-02 13:16:01,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:16:01,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:16:01,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:16:01,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:16:01,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,571 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-12-02 13:16:01,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:16:01,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:16:01,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:16:01,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:16:01,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,606 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 13:16:01,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:16:01,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:16:01,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:16:01,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:16:01,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (1/1) ... [2024-12-02 13:16:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:16:01,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:01,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:16:01,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:16:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 13:16:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 13:16:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 13:16:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 13:16:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 13:16:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:16:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:16:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:16:01,691 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 13:16:01,812 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:16:01,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:16:02,339 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 13:16:02,339 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:16:02,842 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:16:02,843 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 13:16:02,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:16:02 BoogieIcfgContainer [2024-12-02 13:16:02,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:16:02,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:16:02,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:16:02,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:16:02,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:16:01" (1/3) ... [2024-12-02 13:16:02,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744c3d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:16:02, skipping insertion in model container [2024-12-02 13:16:02,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:16:01" (2/3) ... [2024-12-02 13:16:02,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744c3d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:16:02, skipping insertion in model container [2024-12-02 13:16:02,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:16:02" (3/3) ... [2024-12-02 13:16:02,853 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-12-02 13:16:02,886 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:16:02,888 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-equiv.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 28 error locations. [2024-12-02 13:16:02,888 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 13:16:03,045 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-12-02 13:16:03,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 89 transitions, 218 flow [2024-12-02 13:16:03,134 INFO L124 PetriNetUnfolderBase]: 9/82 cut-off events. [2024-12-02 13:16:03,136 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 13:16:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 82 events. 9/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 251 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2024-12-02 13:16:03,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 89 transitions, 218 flow [2024-12-02 13:16:03,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 80 transitions, 187 flow [2024-12-02 13:16:03,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:16:03,166 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;@88b9cda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:16:03,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-12-02 13:16:03,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 13:16:03,169 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-12-02 13:16:03,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 13:16:03,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:03,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 13:16:03,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:03,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 33393, now seen corresponding path program 1 times [2024-12-02 13:16:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670962736] [2024-12-02 13:16:03,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:03,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670962736] [2024-12-02 13:16:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670962736] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:16:03,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744839900] [2024-12-02 13:16:03,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:03,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:03,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:03,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:03,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:03,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-12-02 13:16:03,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:03,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:03,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:08,359 INFO L124 PetriNetUnfolderBase]: 38606/51831 cut-off events. [2024-12-02 13:16:08,359 INFO L125 PetriNetUnfolderBase]: For 2048/2048 co-relation queries the response was YES. [2024-12-02 13:16:08,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106322 conditions, 51831 events. 38606/51831 cut-off events. For 2048/2048 co-relation queries the response was YES. Maximal size of possible extension queue 1956. Compared 299775 event pairs, 35504 based on Foata normal form. 1/32803 useless extension candidates. Maximal degree in co-relation 106226. Up to 51795 conditions per place. [2024-12-02 13:16:08,705 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 62 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-12-02 13:16:08,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 293 flow [2024-12-02 13:16:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:16:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-12-02 13:16:08,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3882783882783883 [2024-12-02 13:16:08,722 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 187 flow. Second operand 3 states and 106 transitions. [2024-12-02 13:16:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 293 flow [2024-12-02 13:16:08,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 13:16:08,791 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 152 flow [2024-12-02 13:16:08,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-12-02 13:16:08,797 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -12 predicate places. [2024-12-02 13:16:08,797 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 152 flow [2024-12-02 13:16:08,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-12-02 13:16:08,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:08,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 13:16:08,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:16:08,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:08,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1036205, now seen corresponding path program 1 times [2024-12-02 13:16:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522199584] [2024-12-02 13:16:08,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:08,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:08,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522199584] [2024-12-02 13:16:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522199584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:08,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 13:16:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594422316] [2024-12-02 13:16:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:08,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:08,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:08,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:08,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:08,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-12-02 13:16:08,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:08,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:08,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:12,184 INFO L124 PetriNetUnfolderBase]: 31282/42029 cut-off events. [2024-12-02 13:16:12,184 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-12-02 13:16:12,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85179 conditions, 42029 events. 31282/42029 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 236734 event pairs, 28582 based on Foata normal form. 0/27774 useless extension candidates. Maximal degree in co-relation 85173. Up to 41993 conditions per place. [2024-12-02 13:16:12,355 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 58 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-12-02 13:16:12,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 262 flow [2024-12-02 13:16:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:16:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-12-02 13:16:12,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3516483516483517 [2024-12-02 13:16:12,357 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 152 flow. Second operand 3 states and 96 transitions. [2024-12-02 13:16:12,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 262 flow [2024-12-02 13:16:12,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:16:12,359 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 145 flow [2024-12-02 13:16:12,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-12-02 13:16:12,360 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -15 predicate places. [2024-12-02 13:16:12,360 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 145 flow [2024-12-02 13:16:12,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-12-02 13:16:12,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:12,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 13:16:12,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:16:12,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:12,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 995826687, now seen corresponding path program 1 times [2024-12-02 13:16:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499242401] [2024-12-02 13:16:12,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499242401] [2024-12-02 13:16:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499242401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:12,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:12,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680432861] [2024-12-02 13:16:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:12,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:16:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:12,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:16:12,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:16:12,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:12,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-12-02 13:16:12,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:12,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:12,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:15,296 INFO L124 PetriNetUnfolderBase]: 31283/42033 cut-off events. [2024-12-02 13:16:15,296 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-12-02 13:16:15,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85189 conditions, 42033 events. 31283/42033 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 236699 event pairs, 28582 based on Foata normal form. 1/27778 useless extension candidates. Maximal degree in co-relation 85182. Up to 41997 conditions per place. [2024-12-02 13:16:15,438 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 60 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-12-02 13:16:15,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 279 flow [2024-12-02 13:16:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:16:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:16:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-12-02 13:16:15,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3021978021978022 [2024-12-02 13:16:15,440 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 145 flow. Second operand 4 states and 110 transitions. [2024-12-02 13:16:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 279 flow [2024-12-02 13:16:15,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:16:15,442 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 173 flow [2024-12-02 13:16:15,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-12-02 13:16:15,443 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -11 predicate places. [2024-12-02 13:16:15,443 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 173 flow [2024-12-02 13:16:15,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-12-02 13:16:15,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:15,444 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:15,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:16:15,444 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:15,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:15,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1334723237, now seen corresponding path program 1 times [2024-12-02 13:16:15,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:15,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458242916] [2024-12-02 13:16:15,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458242916] [2024-12-02 13:16:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458242916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332117373] [2024-12-02 13:16:15,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:15,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:15,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:16:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:15,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:16:15,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:15,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:16:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332117373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:16:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 13:16:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543637512] [2024-12-02 13:16:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:15,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:16:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:15,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:16:15,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:16:15,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:15,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-12-02 13:16:15,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:15,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:15,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:18,715 INFO L124 PetriNetUnfolderBase]: 31283/42032 cut-off events. [2024-12-02 13:16:18,715 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2024-12-02 13:16:18,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85200 conditions, 42032 events. 31283/42032 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 236682 event pairs, 28582 based on Foata normal form. 1/27778 useless extension candidates. Maximal degree in co-relation 85191. Up to 41992 conditions per place. [2024-12-02 13:16:18,902 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 56 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-12-02 13:16:18,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 295 flow [2024-12-02 13:16:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:16:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 13:16:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-12-02 13:16:18,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23809523809523808 [2024-12-02 13:16:18,905 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 173 flow. Second operand 6 states and 130 transitions. [2024-12-02 13:16:18,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 295 flow [2024-12-02 13:16:18,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:16:18,907 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 180 flow [2024-12-02 13:16:18,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-12-02 13:16:18,908 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-12-02 13:16:18,908 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 180 flow [2024-12-02 13:16:18,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-12-02 13:16:18,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:18,909 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-12-02 13:16:18,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:16:19,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:19,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:19,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1573251603, now seen corresponding path program 1 times [2024-12-02 13:16:19,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:19,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759372391] [2024-12-02 13:16:19,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759372391] [2024-12-02 13:16:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759372391] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911189120] [2024-12-02 13:16:19,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:19,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:19,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:16:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:19,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:16:19,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:19,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:19,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911189120] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:19,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:19,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 13:16:19,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752791991] [2024-12-02 13:16:19,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:19,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:16:19,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:19,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:16:19,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:16:19,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 180 flow. Second operand has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-12-02 13:16:19,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:19,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:19,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:22,633 INFO L124 PetriNetUnfolderBase]: 31286/42044 cut-off events. [2024-12-02 13:16:22,633 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-12-02 13:16:22,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85244 conditions, 42044 events. 31286/42044 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 1487. Compared 236718 event pairs, 28582 based on Foata normal form. 3/27790 useless extension candidates. Maximal degree in co-relation 85235. Up to 41999 conditions per place. [2024-12-02 13:16:22,777 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 59 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-12-02 13:16:22,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 378 flow [2024-12-02 13:16:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:16:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 13:16:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-12-02 13:16:22,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2032967032967033 [2024-12-02 13:16:22,780 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 180 flow. Second operand 10 states and 185 transitions. [2024-12-02 13:16:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 378 flow [2024-12-02 13:16:22,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 332 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-12-02 13:16:22,782 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 232 flow [2024-12-02 13:16:22,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=232, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-12-02 13:16:22,783 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-12-02 13:16:22,783 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 232 flow [2024-12-02 13:16:22,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 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) [2024-12-02 13:16:22,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:22,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:22,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:16:22,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:22,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:22,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1795329461, now seen corresponding path program 1 times [2024-12-02 13:16:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378278262] [2024-12-02 13:16:22,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378278262] [2024-12-02 13:16:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378278262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:16:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247711347] [2024-12-02 13:16:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:23,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:23,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:23,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:23,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-12-02 13:16:23,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:16:23,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:23,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-12-02 13:16:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:27,034 INFO L124 PetriNetUnfolderBase]: 44938/60298 cut-off events. [2024-12-02 13:16:27,034 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2024-12-02 13:16:27,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121932 conditions, 60298 events. 44938/60298 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 1993. Compared 354168 event pairs, 28644 based on Foata normal form. 0/41185 useless extension candidates. Maximal degree in co-relation 121921. Up to 42056 conditions per place. [2024-12-02 13:16:27,305 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 113 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-12-02 13:16:27,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 557 flow [2024-12-02 13:16:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:16:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-12-02 13:16:27,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-12-02 13:16:27,306 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 232 flow. Second operand 3 states and 143 transitions. [2024-12-02 13:16:27,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 557 flow [2024-12-02 13:16:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-12-02 13:16:27,311 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 233 flow [2024-12-02 13:16:27,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-12-02 13:16:27,312 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2024-12-02 13:16:27,312 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 233 flow [2024-12-02 13:16:27,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:16:27,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:27,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:27,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:16:27,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:27,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -179360386, now seen corresponding path program 1 times [2024-12-02 13:16:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015560257] [2024-12-02 13:16:27,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015560257] [2024-12-02 13:16:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015560257] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:27,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:27,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646044609] [2024-12-02 13:16:27,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:27,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:27,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:27,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:27,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:27,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-12-02 13:16:27,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:27,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:27,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:33,230 INFO L124 PetriNetUnfolderBase]: 61880/83378 cut-off events. [2024-12-02 13:16:33,230 INFO L125 PetriNetUnfolderBase]: For 6715/6715 co-relation queries the response was YES. [2024-12-02 13:16:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173630 conditions, 83378 events. 61880/83378 cut-off events. For 6715/6715 co-relation queries the response was YES. Maximal size of possible extension queue 2217. Compared 505069 event pairs, 44489 based on Foata normal form. 767/58755 useless extension candidates. Maximal degree in co-relation 173617. Up to 60229 conditions per place. [2024-12-02 13:16:33,624 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 145 selfloop transitions, 4 changer transitions 8/163 dead transitions. [2024-12-02 13:16:33,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 163 transitions, 737 flow [2024-12-02 13:16:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 13:16:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2024-12-02 13:16:33,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-12-02 13:16:33,625 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 233 flow. Second operand 5 states and 203 transitions. [2024-12-02 13:16:33,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 163 transitions, 737 flow [2024-12-02 13:16:33,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 163 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:16:33,632 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 250 flow [2024-12-02 13:16:33,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-12-02 13:16:33,633 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-12-02 13:16:33,633 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 250 flow [2024-12-02 13:16:33,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-12-02 13:16:33,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:33,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:33,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:16:33,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:33,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2108535882, now seen corresponding path program 1 times [2024-12-02 13:16:33,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:33,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689379338] [2024-12-02 13:16:33,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 13:16:33,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689379338] [2024-12-02 13:16:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689379338] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:16:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933745006] [2024-12-02 13:16:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:33,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:33,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:33,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:33,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-12-02 13:16:33,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-12-02 13:16:33,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:33,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-12-02 13:16:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:40,223 INFO L124 PetriNetUnfolderBase]: 76264/102884 cut-off events. [2024-12-02 13:16:40,224 INFO L125 PetriNetUnfolderBase]: For 12395/12395 co-relation queries the response was YES. [2024-12-02 13:16:40,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217079 conditions, 102884 events. 76264/102884 cut-off events. For 12395/12395 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 642810 event pairs, 40184 based on Foata normal form. 0/74051 useless extension candidates. Maximal degree in co-relation 217064. Up to 83879 conditions per place. [2024-12-02 13:16:40,700 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 109 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-12-02 13:16:40,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 578 flow [2024-12-02 13:16:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:16:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-12-02 13:16:40,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-12-02 13:16:40,701 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 250 flow. Second operand 3 states and 137 transitions. [2024-12-02 13:16:40,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 578 flow [2024-12-02 13:16:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 13:16:40,709 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 266 flow [2024-12-02 13:16:40,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2024-12-02 13:16:40,710 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2024-12-02 13:16:40,710 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 266 flow [2024-12-02 13:16:40,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-12-02 13:16:40,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:40,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:40,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:16:40,710 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:40,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash -940101766, now seen corresponding path program 1 times [2024-12-02 13:16:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:40,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776390987] [2024-12-02 13:16:40,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:40,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776390987] [2024-12-02 13:16:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776390987] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:40,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:40,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052676887] [2024-12-02 13:16:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:40,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:40,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:40,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:40,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:16:40,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2024-12-02 13:16:40,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:40,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:16:40,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:46,235 INFO L124 PetriNetUnfolderBase]: 59071/79594 cut-off events. [2024-12-02 13:16:46,235 INFO L125 PetriNetUnfolderBase]: For 10089/10089 co-relation queries the response was YES. [2024-12-02 13:16:46,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174009 conditions, 79594 events. 59071/79594 cut-off events. For 10089/10089 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 472535 event pairs, 51511 based on Foata normal form. 432/57528 useless extension candidates. Maximal degree in co-relation 173993. Up to 74241 conditions per place. [2024-12-02 13:16:46,624 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 71 selfloop transitions, 2 changer transitions 43/122 dead transitions. [2024-12-02 13:16:46,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 601 flow [2024-12-02 13:16:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 13:16:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-12-02 13:16:46,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-12-02 13:16:46,626 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 266 flow. Second operand 5 states and 161 transitions. [2024-12-02 13:16:46,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 601 flow [2024-12-02 13:16:46,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 122 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:16:46,640 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 260 flow [2024-12-02 13:16:46,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-12-02 13:16:46,640 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2024-12-02 13:16:46,640 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 260 flow [2024-12-02 13:16:46,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2024-12-02 13:16:46,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:46,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:46,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:16:46,641 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:46,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:46,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1935429159, now seen corresponding path program 1 times [2024-12-02 13:16:46,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:46,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874837435] [2024-12-02 13:16:46,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:46,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874837435] [2024-12-02 13:16:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874837435] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739056930] [2024-12-02 13:16:46,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:46,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:46,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:46,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:46,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:16:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:47,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:16:47,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:47,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739056930] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:47,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-12-02 13:16:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681178922] [2024-12-02 13:16:47,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:47,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:16:47,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:47,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:16:47,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:16:47,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 91 [2024-12-02 13:16:47,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 260 flow. Second operand has 15 states, 15 states have (on average 10.933333333333334) internal successors, (164), 15 states have internal predecessors, (164), 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) [2024-12-02 13:16:47,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:47,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 91 [2024-12-02 13:16:47,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:16:54,065 INFO L124 PetriNetUnfolderBase]: 76263/102757 cut-off events. [2024-12-02 13:16:54,065 INFO L125 PetriNetUnfolderBase]: For 16895/16895 co-relation queries the response was YES. [2024-12-02 13:16:54,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225305 conditions, 102757 events. 76263/102757 cut-off events. For 16895/16895 co-relation queries the response was YES. Maximal size of possible extension queue 2647. Compared 644779 event pairs, 43338 based on Foata normal form. 944/74971 useless extension candidates. Maximal degree in co-relation 225287. Up to 59295 conditions per place. [2024-12-02 13:16:54,527 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 178 selfloop transitions, 13 changer transitions 12/208 dead transitions. [2024-12-02 13:16:54,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 208 transitions, 1012 flow [2024-12-02 13:16:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:16:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 13:16:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2024-12-02 13:16:54,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32967032967032966 [2024-12-02 13:16:54,529 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 260 flow. Second operand 9 states and 270 transitions. [2024-12-02 13:16:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 208 transitions, 1012 flow [2024-12-02 13:16:54,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 208 transitions, 978 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-12-02 13:16:54,661 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 296 flow [2024-12-02 13:16:54,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-12-02 13:16:54,662 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2024-12-02 13:16:54,662 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 296 flow [2024-12-02 13:16:54,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.933333333333334) internal successors, (164), 15 states have internal predecessors, (164), 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) [2024-12-02 13:16:54,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:16:54,662 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:54,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:16:54,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 13:16:54,863 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:16:54,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 193864596, now seen corresponding path program 1 times [2024-12-02 13:16:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815681814] [2024-12-02 13:16:54,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815681814] [2024-12-02 13:16:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815681814] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494271629] [2024-12-02 13:16:54,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:54,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:54,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:16:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:55,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:16:55,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:55,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494271629] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:55,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-12-02 13:16:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586488475] [2024-12-02 13:16:55,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:55,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:16:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:55,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:16:55,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:16:55,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 91 [2024-12-02 13:16:55,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 296 flow. Second operand has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 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) [2024-12-02 13:16:55,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:16:55,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 91 [2024-12-02 13:16:55,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:00,811 INFO L124 PetriNetUnfolderBase]: 57990/78513 cut-off events. [2024-12-02 13:17:00,812 INFO L125 PetriNetUnfolderBase]: For 11880/11880 co-relation queries the response was YES. [2024-12-02 13:17:01,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173670 conditions, 78513 events. 57990/78513 cut-off events. For 11880/11880 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 474211 event pairs, 33916 based on Foata normal form. 1152/57528 useless extension candidates. Maximal degree in co-relation 173654. Up to 47546 conditions per place. [2024-12-02 13:17:01,220 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 99 selfloop transitions, 12 changer transitions 43/159 dead transitions. [2024-12-02 13:17:01,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 159 transitions, 800 flow [2024-12-02 13:17:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:17:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 13:17:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-12-02 13:17:01,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-12-02 13:17:01,222 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 296 flow. Second operand 9 states and 231 transitions. [2024-12-02 13:17:01,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 159 transitions, 800 flow [2024-12-02 13:17:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 159 transitions, 785 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 13:17:01,235 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 325 flow [2024-12-02 13:17:01,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=325, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2024-12-02 13:17:01,235 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2024-12-02 13:17:01,235 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 325 flow [2024-12-02 13:17:01,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 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) [2024-12-02 13:17:01,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:01,235 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-12-02 13:17:01,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:17:01,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:01,436 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:01,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash -638698669, now seen corresponding path program 2 times [2024-12-02 13:17:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356454526] [2024-12-02 13:17:01,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:17:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:01,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:17:01,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:17:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:17:01,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356454526] [2024-12-02 13:17:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356454526] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146401575] [2024-12-02 13:17:01,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:17:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:01,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:01,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:17:01,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:17:01,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:17:01,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:17:01,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:17:01,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:17:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146401575] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:01,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-12-02 13:17:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148352486] [2024-12-02 13:17:01,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:01,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:17:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:01,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:17:01,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:17:01,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:17:01,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 13:17:01,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:01,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:17:01,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:06,461 INFO L124 PetriNetUnfolderBase]: 54271/73199 cut-off events. [2024-12-02 13:17:06,462 INFO L125 PetriNetUnfolderBase]: For 19858/19858 co-relation queries the response was YES. [2024-12-02 13:17:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173004 conditions, 73199 events. 54271/73199 cut-off events. For 19858/19858 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 437981 event pairs, 48844 based on Foata normal form. 1/51797 useless extension candidates. Maximal degree in co-relation 172984. Up to 73151 conditions per place. [2024-12-02 13:17:07,015 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 60 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-12-02 13:17:07,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 79 transitions, 463 flow [2024-12-02 13:17:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:17:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 13:17:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-12-02 13:17:07,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-12-02 13:17:07,017 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 325 flow. Second operand 4 states and 104 transitions. [2024-12-02 13:17:07,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 79 transitions, 463 flow [2024-12-02 13:17:07,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 422 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-12-02 13:17:07,058 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 302 flow [2024-12-02 13:17:07,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-12-02 13:17:07,058 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-12-02 13:17:07,058 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 302 flow [2024-12-02 13:17:07,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 13:17:07,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:07,058 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:07,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:17:07,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 13:17:07,259 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:07,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash 755409858, now seen corresponding path program 1 times [2024-12-02 13:17:07,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:07,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513607142] [2024-12-02 13:17:07,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 13:17:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513607142] [2024-12-02 13:17:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513607142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:17:07,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:17:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:17:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979884608] [2024-12-02 13:17:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:17:07,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:17:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:07,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:17:07,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:17:07,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-12-02 13:17:07,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-12-02 13:17:07,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:07,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-12-02 13:17:07,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:13,282 INFO L124 PetriNetUnfolderBase]: 62482/84230 cut-off events. [2024-12-02 13:17:13,282 INFO L125 PetriNetUnfolderBase]: For 19521/19521 co-relation queries the response was YES. [2024-12-02 13:17:13,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192850 conditions, 84230 events. 62482/84230 cut-off events. For 19521/19521 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 522629 event pairs, 33766 based on Foata normal form. 0/58747 useless extension candidates. Maximal degree in co-relation 192837. Up to 51076 conditions per place. [2024-12-02 13:17:13,652 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 122 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-12-02 13:17:13,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 697 flow [2024-12-02 13:17:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:17:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:17:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-12-02 13:17:13,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-12-02 13:17:13,653 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 302 flow. Second operand 3 states and 147 transitions. [2024-12-02 13:17:13,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 697 flow [2024-12-02 13:17:14,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 669 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 13:17:14,103 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 288 flow [2024-12-02 13:17:14,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-12-02 13:17:14,104 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-12-02 13:17:14,104 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 288 flow [2024-12-02 13:17:14,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-12-02 13:17:14,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:14,105 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:14,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:17:14,105 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:14,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 755409854, now seen corresponding path program 1 times [2024-12-02 13:17:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153189144] [2024-12-02 13:17:14,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153189144] [2024-12-02 13:17:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153189144] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323976853] [2024-12-02 13:17:14,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:14,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:14,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:14,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:17:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:14,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 13:17:14,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:14,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:17:14,694 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 21 treesize of output 9 [2024-12-02 13:17:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:14,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:14,788 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 18 treesize of output 16 [2024-12-02 13:17:14,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-12-02 13:17:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323976853] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:14,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:14,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-12-02 13:17:14,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226036940] [2024-12-02 13:17:14,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:14,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:17:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:14,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:17:14,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:17:14,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:17:14,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 288 flow. Second operand has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 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) [2024-12-02 13:17:14,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:14,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:17:14,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:21,766 INFO L124 PetriNetUnfolderBase]: 78904/106316 cut-off events. [2024-12-02 13:17:21,766 INFO L125 PetriNetUnfolderBase]: For 29642/29642 co-relation queries the response was YES. [2024-12-02 13:17:21,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250137 conditions, 106316 events. 78904/106316 cut-off events. For 29642/29642 co-relation queries the response was YES. Maximal size of possible extension queue 2624. Compared 661111 event pairs, 31253 based on Foata normal form. 0/77349 useless extension candidates. Maximal degree in co-relation 250123. Up to 46438 conditions per place. [2024-12-02 13:17:22,292 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 197 selfloop transitions, 17 changer transitions 0/219 dead transitions. [2024-12-02 13:17:22,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 219 transitions, 1137 flow [2024-12-02 13:17:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:17:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:17:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 325 transitions. [2024-12-02 13:17:22,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-12-02 13:17:22,294 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 288 flow. Second operand 12 states and 325 transitions. [2024-12-02 13:17:22,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 219 transitions, 1137 flow [2024-12-02 13:17:23,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 219 transitions, 1135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:17:23,741 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 344 flow [2024-12-02 13:17:23,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-12-02 13:17:23,741 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2024-12-02 13:17:23,741 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 344 flow [2024-12-02 13:17:23,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 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) [2024-12-02 13:17:23,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:23,742 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:23,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:17:23,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 13:17:23,942 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:23,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:23,943 INFO L85 PathProgramCache]: Analyzing trace with hash 755409855, now seen corresponding path program 1 times [2024-12-02 13:17:23,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:23,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160297070] [2024-12-02 13:17:23,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:23,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160297070] [2024-12-02 13:17:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160297070] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:24,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171380261] [2024-12-02 13:17:24,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:24,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:24,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:24,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:17:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:24,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:17:24,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:24,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:17:24,481 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 19 treesize of output 7 [2024-12-02 13:17:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:24,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:24,572 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 16 treesize of output 14 [2024-12-02 13:17:24,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 16 [2024-12-02 13:17:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:24,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171380261] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:24,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:24,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-12-02 13:17:24,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994403267] [2024-12-02 13:17:24,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:24,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:17:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:24,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:17:24,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:17:24,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:17:24,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 344 flow. Second operand has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 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) [2024-12-02 13:17:24,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:24,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:17:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:31,515 INFO L124 PetriNetUnfolderBase]: 76167/102635 cut-off events. [2024-12-02 13:17:31,515 INFO L125 PetriNetUnfolderBase]: For 40403/40403 co-relation queries the response was YES. [2024-12-02 13:17:31,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255230 conditions, 102635 events. 76167/102635 cut-off events. For 40403/40403 co-relation queries the response was YES. Maximal size of possible extension queue 2596. Compared 635298 event pairs, 28740 based on Foata normal form. 944/79126 useless extension candidates. Maximal degree in co-relation 255213. Up to 42757 conditions per place. [2024-12-02 13:17:32,048 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 196 selfloop transitions, 17 changer transitions 0/218 dead transitions. [2024-12-02 13:17:32,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 1181 flow [2024-12-02 13:17:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:17:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 13:17:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-12-02 13:17:32,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2967032967032967 [2024-12-02 13:17:32,050 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 344 flow. Second operand 12 states and 324 transitions. [2024-12-02 13:17:32,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 1181 flow [2024-12-02 13:17:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 218 transitions, 1154 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-12-02 13:17:33,776 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 347 flow [2024-12-02 13:17:33,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=347, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2024-12-02 13:17:33,776 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-12-02 13:17:33,776 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 347 flow [2024-12-02 13:17:33,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 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) [2024-12-02 13:17:33,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:33,777 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:33,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:17:33,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:33,977 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:33,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2026995395, now seen corresponding path program 1 times [2024-12-02 13:17:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452042384] [2024-12-02 13:17:33,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:33,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 13:17:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452042384] [2024-12-02 13:17:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452042384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:17:34,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:17:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:17:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864927943] [2024-12-02 13:17:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:17:34,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:17:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:34,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:17:34,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:17:34,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-12-02 13:17:34,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-12-02 13:17:34,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:34,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-12-02 13:17:34,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:17:43,467 INFO L124 PetriNetUnfolderBase]: 94620/127454 cut-off events. [2024-12-02 13:17:43,467 INFO L125 PetriNetUnfolderBase]: For 67007/67007 co-relation queries the response was YES. [2024-12-02 13:17:43,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314414 conditions, 127454 events. 94620/127454 cut-off events. For 67007/67007 co-relation queries the response was YES. Maximal size of possible extension queue 3007. Compared 802084 event pairs, 47028 based on Foata normal form. 0/95686 useless extension candidates. Maximal degree in co-relation 314399. Up to 84898 conditions per place. [2024-12-02 13:17:44,004 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 123 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-12-02 13:17:44,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 786 flow [2024-12-02 13:17:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:17:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 13:17:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-12-02 13:17:44,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-12-02 13:17:44,005 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 347 flow. Second operand 3 states and 147 transitions. [2024-12-02 13:17:44,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 786 flow [2024-12-02 13:17:44,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 767 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 13:17:44,305 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 355 flow [2024-12-02 13:17:44,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-12-02 13:17:44,306 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-12-02 13:17:44,306 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 355 flow [2024-12-02 13:17:44,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-12-02 13:17:44,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:17:44,306 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:17:44,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:17:44,306 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:17:44,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2026995398, now seen corresponding path program 2 times [2024-12-02 13:17:44,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599600629] [2024-12-02 13:17:44,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:17:44,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:44,321 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:17:44,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:17:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599600629] [2024-12-02 13:17:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599600629] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769095161] [2024-12-02 13:17:44,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:17:44,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:44,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:44,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:44,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:17:44,869 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:17:44,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:17:44,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:17:44,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:44,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:17:45,003 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 21 treesize of output 9 [2024-12-02 13:17:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:45,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:45,113 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 18 treesize of output 16 [2024-12-02 13:17:45,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-12-02 13:17:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769095161] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:45,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-12-02 13:17:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650350782] [2024-12-02 13:17:45,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:45,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:17:45,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:45,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:17:45,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:17:45,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 91 [2024-12-02 13:17:45,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 355 flow. Second operand has 20 states, 20 states have (on average 11.1) internal successors, (222), 20 states have internal predecessors, (222), 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) [2024-12-02 13:17:45,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:17:45,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 91 [2024-12-02 13:17:45,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 13:18:08,808 INFO L124 PetriNetUnfolderBase]: 222422/298713 cut-off events. [2024-12-02 13:18:08,808 INFO L125 PetriNetUnfolderBase]: For 161610/161610 co-relation queries the response was YES. [2024-12-02 13:18:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773358 conditions, 298713 events. 222422/298713 cut-off events. For 161610/161610 co-relation queries the response was YES. Maximal size of possible extension queue 6055. Compared 2010958 event pairs, 47716 based on Foata normal form. 0/237857 useless extension candidates. Maximal degree in co-relation 773343. Up to 91252 conditions per place. [2024-12-02 13:18:10,304 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 426 selfloop transitions, 38 changer transitions 0/469 dead transitions. [2024-12-02 13:18:10,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 469 transitions, 2807 flow [2024-12-02 13:18:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 13:18:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-12-02 13:18:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 598 transitions. [2024-12-02 13:18:10,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2024-12-02 13:18:10,306 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 355 flow. Second operand 20 states and 598 transitions. [2024-12-02 13:18:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 469 transitions, 2807 flow [2024-12-02 13:18:10,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 469 transitions, 2795 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 13:18:10,687 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 662 flow [2024-12-02 13:18:10,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=662, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2024-12-02 13:18:10,687 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2024-12-02 13:18:10,687 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 662 flow [2024-12-02 13:18:10,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.1) internal successors, (222), 20 states have internal predecessors, (222), 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) [2024-12-02 13:18:10,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 13:18:10,688 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:10,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:18:10,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:18:10,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2024-12-02 13:18:10,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2026995397, now seen corresponding path program 1 times [2024-12-02 13:18:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:10,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287125865] [2024-12-02 13:18:10,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287125865] [2024-12-02 13:18:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287125865] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:18:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482692680] [2024-12-02 13:18:11,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:11,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:18:11,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:18:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5a1efb3-7dbd-41d8-bb74-70d41a391ead/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:18:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:11,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 13:18:11,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:18:11,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 13:18:11,336 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 19 treesize of output 7 [2024-12-02 13:18:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:11,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:18:11,416 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 16 treesize of output 14 [2024-12-02 13:18:11,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 16 [2024-12-02 13:18:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482692680] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:18:11,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:18:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-12-02 13:18:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117589112] [2024-12-02 13:18:11,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:18:11,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:18:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:11,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:18:11,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:18:11,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2024-12-02 13:18:11,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 662 flow. Second operand has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 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) [2024-12-02 13:18:11,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 13:18:11,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2024-12-02 13:18:11,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand