./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.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_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB --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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:36,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:36,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:22:36,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:36,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:36,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:36,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:36,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:36,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:36,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:36,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:36,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:36,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:36,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:36,936 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:36,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:36,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:22:36,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:22:36,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:36,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:36,938 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:36,938 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:36,939 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:36,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:36,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:36,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:36,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:36,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:36,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:36,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:22:36,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:36,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:36,942 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_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-11-28 02:22:37,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:37,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:37,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:37,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:37,257 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:37,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-28 02:22:40,358 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/data/7957dcc41/6acf0ab0b1024aaf922b640465e54a5b/FLAGe7c060a78 [2024-11-28 02:22:40,734 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:40,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-28 02:22:40,772 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/data/7957dcc41/6acf0ab0b1024aaf922b640465e54a5b/FLAGe7c060a78 [2024-11-28 02:22:40,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/data/7957dcc41/6acf0ab0b1024aaf922b640465e54a5b [2024-11-28 02:22:40,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:40,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:40,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:40,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:40,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:40,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:40" (1/1) ... [2024-11-28 02:22:40,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acd9c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:40, skipping insertion in model container [2024-11-28 02:22:40,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:40" (1/1) ... [2024-11-28 02:22:40,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:41,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:41,087 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:41,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:41,129 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:41,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41 WrapperNode [2024-11-28 02:22:41,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:41,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:41,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:41,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:41,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,187 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2024-11-28 02:22:41,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:41,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:41,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:41,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:41,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,244 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-11-28 02:22:41,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,253 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:41,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:41,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:41,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:41,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (1/1) ... [2024-11-28 02:22:41,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:41,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:41,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:41,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:22:41,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:22:41,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:22:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:22:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:22:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:22:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:22:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:22:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:22:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:22:41,348 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:22:41,463 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:41,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:41,927 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:22:41,927 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:42,407 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:42,411 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:22:42,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:42 BoogieIcfgContainer [2024-11-28 02:22:42,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:42,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:42,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:42,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:42,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:40" (1/3) ... [2024-11-28 02:22:42,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8dd864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:42, skipping insertion in model container [2024-11-28 02:22:42,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:41" (2/3) ... [2024-11-28 02:22:42,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8dd864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:42, skipping insertion in model container [2024-11-28 02:22:42,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:42" (3/3) ... [2024-11-28 02:22:42,425 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-11-28 02:22:42,442 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:42,444 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue2.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2024-11-28 02:22:42,444 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:22:42,583 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:22:42,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 106 flow [2024-11-28 02:22:42,672 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2024-11-28 02:22:42,674 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:22:42,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 3/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 131 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-28 02:22:42,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 106 flow [2024-11-28 02:22:42,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 93 flow [2024-11-28 02:22:42,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:42,700 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;@4fb0eeb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:42,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 02:22:42,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:22:42,707 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 02:22:42,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:42,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:42,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:22:42,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:42,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 599358, now seen corresponding path program 1 times [2024-11-28 02:22:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492268128] [2024-11-28 02:22:42,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492268128] [2024-11-28 02:22:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492268128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:43,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:43,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745503418] [2024-11-28 02:22:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:43,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:43,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:43,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:43,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:22:43,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:43,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:43,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:22:43,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:43,488 INFO L124 PetriNetUnfolderBase]: 219/425 cut-off events. [2024-11-28 02:22:43,488 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 02:22:43,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 425 events. 219/425 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2302 event pairs, 182 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 765. Up to 377 conditions per place. [2024-11-28 02:22:43,494 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 26 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-28 02:22:43,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 151 flow [2024-11-28 02:22:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-28 02:22:43,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-28 02:22:43,511 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 93 flow. Second operand 4 states and 88 transitions. [2024-11-28 02:22:43,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 151 flow [2024-11-28 02:22:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:22:43,523 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 109 flow [2024-11-28 02:22:43,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-28 02:22:43,533 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-28 02:22:43,533 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 109 flow [2024-11-28 02:22:43,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:43,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:43,533 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:22:43,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:22:43,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:43,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash 676196664, now seen corresponding path program 1 times [2024-11-28 02:22:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:43,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52870065] [2024-11-28 02:22:43,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52870065] [2024-11-28 02:22:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52870065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012699899] [2024-11-28 02:22:43,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:43,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:43,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:43,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:22:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:43,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:22:43,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:43,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012699899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:22:43,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:22:43,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599255554] [2024-11-28 02:22:43,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:43,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:22:43,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:43,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:22:43,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:22:43,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:22:43,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:43,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:43,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:22:43,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:44,272 INFO L124 PetriNetUnfolderBase]: 219/424 cut-off events. [2024-11-28 02:22:44,272 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:22:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 424 events. 219/424 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2298 event pairs, 182 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 807. Up to 372 conditions per place. [2024-11-28 02:22:44,277 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-28 02:22:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 163 flow [2024-11-28 02:22:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:22:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:22:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-28 02:22:44,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-11-28 02:22:44,280 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 109 flow. Second operand 6 states and 108 transitions. [2024-11-28 02:22:44,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 163 flow [2024-11-28 02:22:44,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:44,282 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2024-11-28 02:22:44,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-28 02:22:44,283 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2024-11-28 02:22:44,284 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2024-11-28 02:22:44,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:44,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:44,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:22:44,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:22:44,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:44,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:44,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash 679333851, now seen corresponding path program 1 times [2024-11-28 02:22:44,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:44,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705580770] [2024-11-28 02:22:44,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:44,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705580770] [2024-11-28 02:22:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705580770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:44,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:22:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911969593] [2024-11-28 02:22:44,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:44,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:44,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:44,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:44,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-28 02:22:44,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:44,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:44,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-28 02:22:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:45,063 INFO L124 PetriNetUnfolderBase]: 313/621 cut-off events. [2024-11-28 02:22:45,063 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:22:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 621 events. 313/621 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3367 event pairs, 244 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 911. Up to 418 conditions per place. [2024-11-28 02:22:45,072 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 5 changer transitions 2/66 dead transitions. [2024-11-28 02:22:45,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2024-11-28 02:22:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:22:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-28 02:22:45,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-11-28 02:22:45,076 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 5 states and 126 transitions. [2024-11-28 02:22:45,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2024-11-28 02:22:45,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 262 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 02:22:45,080 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2024-11-28 02:22:45,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-11-28 02:22:45,082 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-28 02:22:45,082 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2024-11-28 02:22:45,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:45,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:45,083 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 02:22:45,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:22:45,083 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:45,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -512739300, now seen corresponding path program 1 times [2024-11-28 02:22:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:45,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170493029] [2024-11-28 02:22:45,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:45,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170493029] [2024-11-28 02:22:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170493029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837306328] [2024-11-28 02:22:45,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:45,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:45,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:45,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:22:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:45,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:22:45,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:45,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837306328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:45,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:45,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 02:22:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103865585] [2024-11-28 02:22:45,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:22:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:45,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:22:45,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:22:45,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:22:45,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 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) [2024-11-28 02:22:45,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:45,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:22:45,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:45,846 INFO L124 PetriNetUnfolderBase]: 290/622 cut-off events. [2024-11-28 02:22:45,847 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-28 02:22:45,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 622 events. 290/622 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 3695 event pairs, 244 based on Foata normal form. 3/416 useless extension candidates. Maximal degree in co-relation 931. Up to 510 conditions per place. [2024-11-28 02:22:45,853 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-28 02:22:45,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 229 flow [2024-11-28 02:22:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:22:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:22:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-11-28 02:22:45,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2024-11-28 02:22:45,855 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 10 states and 171 transitions. [2024-11-28 02:22:45,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 229 flow [2024-11-28 02:22:45,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:45,858 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 188 flow [2024-11-28 02:22:45,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-28 02:22:45,859 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-28 02:22:45,860 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 188 flow [2024-11-28 02:22:45,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 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) [2024-11-28 02:22:45,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:45,860 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:45,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:46,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 02:22:46,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:46,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash -8992680, now seen corresponding path program 1 times [2024-11-28 02:22:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:46,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018869537] [2024-11-28 02:22:46,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:46,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:46,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018869537] [2024-11-28 02:22:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018869537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:46,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:46,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:22:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027077156] [2024-11-28 02:22:46,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:46,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:46,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:46,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:46,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-28 02:22:46,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:46,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:46,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-28 02:22:46,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:46,444 INFO L124 PetriNetUnfolderBase]: 268/556 cut-off events. [2024-11-28 02:22:46,445 INFO L125 PetriNetUnfolderBase]: For 121/138 co-relation queries the response was YES. [2024-11-28 02:22:46,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 556 events. 268/556 cut-off events. For 121/138 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2985 event pairs, 219 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 1137. Up to 425 conditions per place. [2024-11-28 02:22:46,449 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 35 selfloop transitions, 2 changer transitions 14/62 dead transitions. [2024-11-28 02:22:46,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 325 flow [2024-11-28 02:22:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:22:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-28 02:22:46,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-11-28 02:22:46,451 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 188 flow. Second operand 5 states and 113 transitions. [2024-11-28 02:22:46,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 325 flow [2024-11-28 02:22:46,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:46,454 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 170 flow [2024-11-28 02:22:46,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-11-28 02:22:46,455 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-28 02:22:46,455 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 170 flow [2024-11-28 02:22:46,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:46,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:46,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:46,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:22:46,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:46,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1181927840, now seen corresponding path program 1 times [2024-11-28 02:22:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591087524] [2024-11-28 02:22:46,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:46,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591087524] [2024-11-28 02:22:46,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591087524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607153499] [2024-11-28 02:22:46,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:46,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:46,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:46,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:22:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:47,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:22:47,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:47,116 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 15 treesize of output 1 [2024-11-28 02:22:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:47,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:47,301 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 [2024-11-28 02:22:47,309 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 22 treesize of output 20 [2024-11-28 02:22:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607153499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:47,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:47,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 02:22:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461406867] [2024-11-28 02:22:47,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:47,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:22:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:47,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:22:47,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:22:47,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:47,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 170 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:47,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:47,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:47,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:47,835 INFO L124 PetriNetUnfolderBase]: 369/812 cut-off events. [2024-11-28 02:22:47,835 INFO L125 PetriNetUnfolderBase]: For 104/137 co-relation queries the response was YES. [2024-11-28 02:22:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 812 events. 369/812 cut-off events. For 104/137 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5001 event pairs, 86 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 1610. Up to 220 conditions per place. [2024-11-28 02:22:47,843 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 49 selfloop transitions, 15 changer transitions 0/76 dead transitions. [2024-11-28 02:22:47,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 368 flow [2024-11-28 02:22:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:22:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-11-28 02:22:47,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-28 02:22:47,845 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 170 flow. Second operand 8 states and 176 transitions. [2024-11-28 02:22:47,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 368 flow [2024-11-28 02:22:47,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 342 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-28 02:22:47,850 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 223 flow [2024-11-28 02:22:47,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-28 02:22:47,851 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-28 02:22:47,851 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 223 flow [2024-11-28 02:22:47,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:47,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:47,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:47,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:22:48,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:48,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:48,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1181927841, now seen corresponding path program 1 times [2024-11-28 02:22:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520493658] [2024-11-28 02:22:48,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:48,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:48,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520493658] [2024-11-28 02:22:48,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520493658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:48,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995429529] [2024-11-28 02:22:48,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:48,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:48,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:48,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:48,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:22:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:48,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:22:48,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:48,544 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 15 treesize of output 1 [2024-11-28 02:22:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:48,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:48,722 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 14 treesize of output 12 [2024-11-28 02:22:48,726 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 18 treesize of output 16 [2024-11-28 02:22:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995429529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:48,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-28 02:22:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975561450] [2024-11-28 02:22:48,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:48,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:22:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:48,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:22:48,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:22:48,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:48,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 223 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:48,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:48,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:48,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:49,230 INFO L124 PetriNetUnfolderBase]: 343/743 cut-off events. [2024-11-28 02:22:49,230 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-28 02:22:49,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 743 events. 343/743 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4353 event pairs, 81 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1718. Up to 215 conditions per place. [2024-11-28 02:22:49,235 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 48 selfloop transitions, 15 changer transitions 0/75 dead transitions. [2024-11-28 02:22:49,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 393 flow [2024-11-28 02:22:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:22:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-11-28 02:22:49,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-11-28 02:22:49,237 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 223 flow. Second operand 8 states and 175 transitions. [2024-11-28 02:22:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 393 flow [2024-11-28 02:22:49,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 383 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:22:49,239 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 239 flow [2024-11-28 02:22:49,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-11-28 02:22:49,240 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-28 02:22:49,240 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 239 flow [2024-11-28 02:22:49,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:49,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:49,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:49,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:22:49,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:49,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:49,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1181927843, now seen corresponding path program 1 times [2024-11-28 02:22:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492853704] [2024-11-28 02:22:49,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:49,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:49,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492853704] [2024-11-28 02:22:49,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492853704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:49,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:49,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:22:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145956532] [2024-11-28 02:22:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:49,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:49,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:49,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:49,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:49,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:49,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 239 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) [2024-11-28 02:22:49,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:49,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:49,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:49,812 INFO L124 PetriNetUnfolderBase]: 375/842 cut-off events. [2024-11-28 02:22:49,812 INFO L125 PetriNetUnfolderBase]: For 700/700 co-relation queries the response was YES. [2024-11-28 02:22:49,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 842 events. 375/842 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5154 event pairs, 104 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 2068. Up to 542 conditions per place. [2024-11-28 02:22:49,820 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 50 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-28 02:22:49,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 386 flow [2024-11-28 02:22:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-28 02:22:49,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6231884057971014 [2024-11-28 02:22:49,821 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 239 flow. Second operand 3 states and 86 transitions. [2024-11-28 02:22:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 386 flow [2024-11-28 02:22:49,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 371 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:22:49,827 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 253 flow [2024-11-28 02:22:49,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-28 02:22:49,828 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-28 02:22:49,828 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 253 flow [2024-11-28 02:22:49,829 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) [2024-11-28 02:22:49,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:49,829 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:49,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:22:49,829 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:49,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1947494558, now seen corresponding path program 1 times [2024-11-28 02:22:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:49,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343554404] [2024-11-28 02:22:49,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343554404] [2024-11-28 02:22:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343554404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410494473] [2024-11-28 02:22:50,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:50,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:50,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:50,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:22:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:50,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:22:50,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:50,243 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 15 treesize of output 1 [2024-11-28 02:22:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:50,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:50,398 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 14 treesize of output 12 [2024-11-28 02:22:50,403 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 18 treesize of output 16 [2024-11-28 02:22:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410494473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:50,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 02:22:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165065113] [2024-11-28 02:22:50,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:50,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:22:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:50,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:22:50,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:22:50,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:50,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 253 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:50,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:50,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:50,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:50,884 INFO L124 PetriNetUnfolderBase]: 521/1113 cut-off events. [2024-11-28 02:22:50,884 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2024-11-28 02:22:50,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 1113 events. 521/1113 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6932 event pairs, 127 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 2947. Up to 335 conditions per place. [2024-11-28 02:22:50,893 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-11-28 02:22:50,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 612 flow [2024-11-28 02:22:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:22:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-11-28 02:22:50,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-11-28 02:22:50,895 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 253 flow. Second operand 8 states and 174 transitions. [2024-11-28 02:22:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 612 flow [2024-11-28 02:22:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:50,898 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 325 flow [2024-11-28 02:22:50,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-11-28 02:22:50,899 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-28 02:22:50,899 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 325 flow [2024-11-28 02:22:50,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:50,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:50,900 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:50,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:22:51,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:51,104 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:51,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1947494559, now seen corresponding path program 1 times [2024-11-28 02:22:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941863543] [2024-11-28 02:22:51,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941863543] [2024-11-28 02:22:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941863543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122353886] [2024-11-28 02:22:51,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:51,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:51,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:51,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:22:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:51,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:22:51,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:51,487 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 15 treesize of output 1 [2024-11-28 02:22:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:51,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:51,624 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 [2024-11-28 02:22:51,630 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 22 treesize of output 20 [2024-11-28 02:22:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:51,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122353886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:51,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-28 02:22:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019977383] [2024-11-28 02:22:51,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:51,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:22:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:51,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:22:51,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:22:51,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:51,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 325 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:51,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:51,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:52,129 INFO L124 PetriNetUnfolderBase]: 486/1066 cut-off events. [2024-11-28 02:22:52,129 INFO L125 PetriNetUnfolderBase]: For 1161/1161 co-relation queries the response was YES. [2024-11-28 02:22:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 1066 events. 486/1066 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6595 event pairs, 127 based on Foata normal form. 24/860 useless extension candidates. Maximal degree in co-relation 3248. Up to 335 conditions per place. [2024-11-28 02:22:52,142 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 64 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-11-28 02:22:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 659 flow [2024-11-28 02:22:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:22:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-11-28 02:22:52,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-11-28 02:22:52,144 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 325 flow. Second operand 8 states and 173 transitions. [2024-11-28 02:22:52,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 659 flow [2024-11-28 02:22:52,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 649 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:22:52,151 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 341 flow [2024-11-28 02:22:52,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-11-28 02:22:52,154 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 02:22:52,154 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 341 flow [2024-11-28 02:22:52,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:52,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:52,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:52,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:52,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:52,359 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:52,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1961311622, now seen corresponding path program 1 times [2024-11-28 02:22:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864175435] [2024-11-28 02:22:52,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:22:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:52,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864175435] [2024-11-28 02:22:52,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864175435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:52,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:52,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:22:52,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119814909] [2024-11-28 02:22:52,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:52,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:52,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:52,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:52,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:52,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:22:52,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:52,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:52,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:22:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:52,830 INFO L124 PetriNetUnfolderBase]: 646/1263 cut-off events. [2024-11-28 02:22:52,830 INFO L125 PetriNetUnfolderBase]: For 1806/1806 co-relation queries the response was YES. [2024-11-28 02:22:52,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 1263 events. 646/1263 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7560 event pairs, 320 based on Foata normal form. 52/1068 useless extension candidates. Maximal degree in co-relation 4191. Up to 804 conditions per place. [2024-11-28 02:22:52,842 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 81 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-28 02:22:52,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 715 flow [2024-11-28 02:22:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-28 02:22:52,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-28 02:22:52,843 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 341 flow. Second operand 4 states and 106 transitions. [2024-11-28 02:22:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 715 flow [2024-11-28 02:22:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 696 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 02:22:52,849 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 349 flow [2024-11-28 02:22:52,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-28 02:22:52,849 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 02:22:52,850 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 349 flow [2024-11-28 02:22:52,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:52,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:52,850 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:52,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:22:52,850 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:52,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1063446812, now seen corresponding path program 1 times [2024-11-28 02:22:52,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:52,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884293948] [2024-11-28 02:22:52,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:22:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884293948] [2024-11-28 02:22:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884293948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:52,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:22:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068834250] [2024-11-28 02:22:52,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:52,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:52,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:52,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:52,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:22:52,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:52,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:52,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:22:52,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:53,296 INFO L124 PetriNetUnfolderBase]: 642/1164 cut-off events. [2024-11-28 02:22:53,296 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-11-28 02:22:53,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 1164 events. 642/1164 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6669 event pairs, 330 based on Foata normal form. 50/970 useless extension candidates. Maximal degree in co-relation 4189. Up to 795 conditions per place. [2024-11-28 02:22:53,308 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 79 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-11-28 02:22:53,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 715 flow [2024-11-28 02:22:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-28 02:22:53,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-11-28 02:22:53,309 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 349 flow. Second operand 4 states and 104 transitions. [2024-11-28 02:22:53,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 715 flow [2024-11-28 02:22:53,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:53,315 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 364 flow [2024-11-28 02:22:53,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-11-28 02:22:53,316 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-11-28 02:22:53,317 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 364 flow [2024-11-28 02:22:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:53,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:53,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:53,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:22:53,317 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:53,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 676665982, now seen corresponding path program 1 times [2024-11-28 02:22:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479053019] [2024-11-28 02:22:53,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:22:53,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:53,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479053019] [2024-11-28 02:22:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479053019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734072186] [2024-11-28 02:22:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:53,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:53,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:53,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:53,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:53,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:53,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:53,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:53,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:53,637 INFO L124 PetriNetUnfolderBase]: 367/705 cut-off events. [2024-11-28 02:22:53,637 INFO L125 PetriNetUnfolderBase]: For 1635/1635 co-relation queries the response was YES. [2024-11-28 02:22:53,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 705 events. 367/705 cut-off events. For 1635/1635 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3674 event pairs, 274 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 2657. Up to 611 conditions per place. [2024-11-28 02:22:53,645 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 43 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-28 02:22:53,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 424 flow [2024-11-28 02:22:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-28 02:22:53,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-28 02:22:53,646 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 364 flow. Second operand 3 states and 70 transitions. [2024-11-28 02:22:53,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 424 flow [2024-11-28 02:22:53,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:53,652 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 332 flow [2024-11-28 02:22:53,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-11-28 02:22:53,653 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-28 02:22:53,653 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 332 flow [2024-11-28 02:22:53,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:53,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:53,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:53,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:22:53,653 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:53,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1763022831, now seen corresponding path program 1 times [2024-11-28 02:22:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828858723] [2024-11-28 02:22:53,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:22:53,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828858723] [2024-11-28 02:22:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828858723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849614831] [2024-11-28 02:22:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:53,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:53,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:53,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:53,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-28 02:22:53,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:53,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:53,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-28 02:22:53,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:53,902 INFO L124 PetriNetUnfolderBase]: 266/530 cut-off events. [2024-11-28 02:22:53,902 INFO L125 PetriNetUnfolderBase]: For 1234/1234 co-relation queries the response was YES. [2024-11-28 02:22:53,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 530 events. 266/530 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2523 event pairs, 187 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 1904. Up to 444 conditions per place. [2024-11-28 02:22:53,907 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-28 02:22:53,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 384 flow [2024-11-28 02:22:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-28 02:22:53,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-11-28 02:22:53,908 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 332 flow. Second operand 3 states and 68 transitions. [2024-11-28 02:22:53,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 384 flow [2024-11-28 02:22:53,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:53,911 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 305 flow [2024-11-28 02:22:53,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-28 02:22:53,913 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 02:22:53,913 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 305 flow [2024-11-28 02:22:53,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:53,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:53,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:53,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:22:53,914 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:53,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 700050474, now seen corresponding path program 1 times [2024-11-28 02:22:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716008075] [2024-11-28 02:22:53,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:54,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:54,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716008075] [2024-11-28 02:22:54,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716008075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:54,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780064078] [2024-11-28 02:22:54,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:54,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:54,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:54,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:54,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:22:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:54,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:22:54,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:54,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780064078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:54,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:54,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 02:22:54,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497803363] [2024-11-28 02:22:54,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:54,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:22:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:54,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:22:54,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:22:54,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:22:54,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:54,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:22:54,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:55,233 INFO L124 PetriNetUnfolderBase]: 651/1260 cut-off events. [2024-11-28 02:22:55,233 INFO L125 PetriNetUnfolderBase]: For 2555/2555 co-relation queries the response was YES. [2024-11-28 02:22:55,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 1260 events. 651/1260 cut-off events. For 2555/2555 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6781 event pairs, 384 based on Foata normal form. 18/1237 useless extension candidates. Maximal degree in co-relation 4351. Up to 716 conditions per place. [2024-11-28 02:22:55,245 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 16 changer transitions 8/114 dead transitions. [2024-11-28 02:22:55,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 855 flow [2024-11-28 02:22:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:22:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:22:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-11-28 02:22:55,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3630434782608696 [2024-11-28 02:22:55,247 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 305 flow. Second operand 10 states and 167 transitions. [2024-11-28 02:22:55,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 855 flow [2024-11-28 02:22:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:55,253 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 393 flow [2024-11-28 02:22:55,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-11-28 02:22:55,254 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-28 02:22:55,254 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 393 flow [2024-11-28 02:22:55,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:55,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:55,254 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 02:22:55,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:22:55,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:55,468 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:55,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1440040618, now seen corresponding path program 2 times [2024-11-28 02:22:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:55,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228987665] [2024-11-28 02:22:55,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:55,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:55,483 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:55,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:22:55,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:55,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228987665] [2024-11-28 02:22:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228987665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:55,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349565965] [2024-11-28 02:22:55,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:55,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:55,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:22:55,624 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:55,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:55,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:22:55,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:22:55,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:22:55,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349565965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:55,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:55,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 02:22:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045720718] [2024-11-28 02:22:55,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:55,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:55,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:55,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:55,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-28 02:22:55,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:55,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:55,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-28 02:22:55,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:55,908 INFO L124 PetriNetUnfolderBase]: 425/904 cut-off events. [2024-11-28 02:22:55,908 INFO L125 PetriNetUnfolderBase]: For 2808/2833 co-relation queries the response was YES. [2024-11-28 02:22:55,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 904 events. 425/904 cut-off events. For 2808/2833 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4929 event pairs, 302 based on Foata normal form. 14/858 useless extension candidates. Maximal degree in co-relation 3416. Up to 707 conditions per place. [2024-11-28 02:22:55,917 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2024-11-28 02:22:55,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 58 transitions, 471 flow [2024-11-28 02:22:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-28 02:22:55,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40217391304347827 [2024-11-28 02:22:55,919 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 393 flow. Second operand 4 states and 74 transitions. [2024-11-28 02:22:55,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 58 transitions, 471 flow [2024-11-28 02:22:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 444 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-28 02:22:55,924 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 386 flow [2024-11-28 02:22:55,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2024-11-28 02:22:55,925 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-28 02:22:55,925 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 386 flow [2024-11-28 02:22:55,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:55,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:55,925 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:55,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:22:56,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:56,126 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:56,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1464571845, now seen corresponding path program 1 times [2024-11-28 02:22:56,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:56,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349448082] [2024-11-28 02:22:56,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:56,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:56,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349448082] [2024-11-28 02:22:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349448082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085738386] [2024-11-28 02:22:56,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:56,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:56,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:22:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:22:56,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:56,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085738386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:56,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 02:22:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499554997] [2024-11-28 02:22:56,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:56,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:22:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:56,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:22:56,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:22:56,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:22:56,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 386 flow. Second operand has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:56,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:56,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:22:56,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:57,264 INFO L124 PetriNetUnfolderBase]: 564/1025 cut-off events. [2024-11-28 02:22:57,264 INFO L125 PetriNetUnfolderBase]: For 2919/2958 co-relation queries the response was YES. [2024-11-28 02:22:57,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1025 events. 564/1025 cut-off events. For 2919/2958 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5029 event pairs, 356 based on Foata normal form. 22/1038 useless extension candidates. Maximal degree in co-relation 3905. Up to 706 conditions per place. [2024-11-28 02:22:57,274 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 34 selfloop transitions, 10 changer transitions 43/95 dead transitions. [2024-11-28 02:22:57,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 795 flow [2024-11-28 02:22:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:22:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:22:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-28 02:22:57,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2024-11-28 02:22:57,277 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 386 flow. Second operand 10 states and 155 transitions. [2024-11-28 02:22:57,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 795 flow [2024-11-28 02:22:57,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:22:57,284 INFO L231 Difference]: Finished difference. Result has 89 places, 52 transitions, 324 flow [2024-11-28 02:22:57,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=89, PETRI_TRANSITIONS=52} [2024-11-28 02:22:57,285 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-11-28 02:22:57,286 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 52 transitions, 324 flow [2024-11-28 02:22:57,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:57,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:57,286 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:57,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:22:57,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:22:57,490 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:22:57,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1351860208, now seen corresponding path program 2 times [2024-11-28 02:22:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156418089] [2024-11-28 02:22:57,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,511 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:57,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:57,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:57,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156418089] [2024-11-28 02:22:57,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156418089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:57,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057459169] [2024-11-28 02:22:57,962 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:57,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:57,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:22:58,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:58,057 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:58,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,119 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 [2024-11-28 02:22:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:58,422 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 [2024-11-28 02:22:58,425 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 [2024-11-28 02:22:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057459169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:58,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:58,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 02:22:58,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18280882] [2024-11-28 02:22:58,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:58,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:22:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:58,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:22:58,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:22:58,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:22:58,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 52 transitions, 324 flow. Second operand has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:58,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:58,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:22:58,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:00,914 INFO L124 PetriNetUnfolderBase]: 1258/2254 cut-off events. [2024-11-28 02:23:00,915 INFO L125 PetriNetUnfolderBase]: For 6021/6087 co-relation queries the response was YES. [2024-11-28 02:23:00,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8535 conditions, 2254 events. 1258/2254 cut-off events. For 6021/6087 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12802 event pairs, 156 based on Foata normal form. 54/2283 useless extension candidates. Maximal degree in co-relation 8507. Up to 340 conditions per place. [2024-11-28 02:23:00,942 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 226 selfloop transitions, 33 changer transitions 0/267 dead transitions. [2024-11-28 02:23:00,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 267 transitions, 2187 flow [2024-11-28 02:23:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:23:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:23:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 423 transitions. [2024-11-28 02:23:00,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38315217391304346 [2024-11-28 02:23:00,945 INFO L175 Difference]: Start difference. First operand has 89 places, 52 transitions, 324 flow. Second operand 24 states and 423 transitions. [2024-11-28 02:23:00,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 267 transitions, 2187 flow [2024-11-28 02:23:00,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 267 transitions, 1999 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-11-28 02:23:00,962 INFO L231 Difference]: Finished difference. Result has 96 places, 69 transitions, 481 flow [2024-11-28 02:23:00,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=96, PETRI_TRANSITIONS=69} [2024-11-28 02:23:00,963 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2024-11-28 02:23:00,963 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 69 transitions, 481 flow [2024-11-28 02:23:00,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:00,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:00,964 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:00,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:23:01,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:23:01,168 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:01,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1351860207, now seen corresponding path program 1 times [2024-11-28 02:23:01,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:01,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711757422] [2024-11-28 02:23:01,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711757422] [2024-11-28 02:23:01,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711757422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051958604] [2024-11-28 02:23:01,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:01,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:01,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:01,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:23:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:01,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:23:01,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:01,685 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 15 treesize of output 1 [2024-11-28 02:23:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:01,901 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 [2024-11-28 02:23:01,905 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 [2024-11-28 02:23:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051958604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:01,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:01,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 02:23:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715296953] [2024-11-28 02:23:01,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:01,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:23:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:01,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:23:01,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:23:02,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:23:02,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 69 transitions, 481 flow. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:02,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:02,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:23:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:03,038 INFO L124 PetriNetUnfolderBase]: 1032/1958 cut-off events. [2024-11-28 02:23:03,038 INFO L125 PetriNetUnfolderBase]: For 6352/6365 co-relation queries the response was YES. [2024-11-28 02:23:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 1958 events. 1032/1958 cut-off events. For 6352/6365 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11277 event pairs, 147 based on Foata normal form. 49/1978 useless extension candidates. Maximal degree in co-relation 7517. Up to 502 conditions per place. [2024-11-28 02:23:03,055 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 106 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-11-28 02:23:03,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 1188 flow [2024-11-28 02:23:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:23:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2024-11-28 02:23:03,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2024-11-28 02:23:03,058 INFO L175 Difference]: Start difference. First operand has 96 places, 69 transitions, 481 flow. Second operand 14 states and 233 transitions. [2024-11-28 02:23:03,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 1188 flow [2024-11-28 02:23:03,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 1127 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-11-28 02:23:03,069 INFO L231 Difference]: Finished difference. Result has 102 places, 70 transitions, 513 flow [2024-11-28 02:23:03,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=513, PETRI_PLACES=102, PETRI_TRANSITIONS=70} [2024-11-28 02:23:03,070 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-28 02:23:03,070 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 70 transitions, 513 flow [2024-11-28 02:23:03,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:03,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:03,071 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:03,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:23:03,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:03,271 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:03,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2140642687, now seen corresponding path program 2 times [2024-11-28 02:23:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:03,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940532267] [2024-11-28 02:23:03,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:03,301 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:03,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940532267] [2024-11-28 02:23:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940532267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819089376] [2024-11-28 02:23:03,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:03,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:03,633 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:03,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:23:03,740 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:03,740 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:03,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:23:03,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:03,763 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 [2024-11-28 02:23:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:03,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:03,981 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 [2024-11-28 02:23:03,985 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 [2024-11-28 02:23:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819089376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:03,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-28 02:23:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874241125] [2024-11-28 02:23:03,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:03,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:23:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:03,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:23:03,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:23:04,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:23:04,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 70 transitions, 513 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:04,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:04,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:23:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:05,082 INFO L124 PetriNetUnfolderBase]: 1350/2533 cut-off events. [2024-11-28 02:23:05,082 INFO L125 PetriNetUnfolderBase]: For 12139/12174 co-relation queries the response was YES. [2024-11-28 02:23:05,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 2533 events. 1350/2533 cut-off events. For 12139/12174 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 15147 event pairs, 208 based on Foata normal form. 75/2565 useless extension candidates. Maximal degree in co-relation 10404. Up to 642 conditions per place. [2024-11-28 02:23:05,110 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 189 selfloop transitions, 19 changer transitions 0/221 dead transitions. [2024-11-28 02:23:05,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 221 transitions, 2353 flow [2024-11-28 02:23:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:23:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 228 transitions. [2024-11-28 02:23:05,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35403726708074534 [2024-11-28 02:23:05,112 INFO L175 Difference]: Start difference. First operand has 102 places, 70 transitions, 513 flow. Second operand 14 states and 228 transitions. [2024-11-28 02:23:05,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 221 transitions, 2353 flow [2024-11-28 02:23:05,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 221 transitions, 2087 flow, removed 21 selfloop flow, removed 13 redundant places. [2024-11-28 02:23:05,129 INFO L231 Difference]: Finished difference. Result has 104 places, 74 transitions, 542 flow [2024-11-28 02:23:05,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=542, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2024-11-28 02:23:05,130 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2024-11-28 02:23:05,130 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 542 flow [2024-11-28 02:23:05,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:05,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:05,131 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:05,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:23:05,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:05,335 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:05,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2140642688, now seen corresponding path program 1 times [2024-11-28 02:23:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176119070] [2024-11-28 02:23:05,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176119070] [2024-11-28 02:23:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176119070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257577834] [2024-11-28 02:23:05,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:05,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:05,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:05,771 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:05,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:23:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:05,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:23:05,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:05,946 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 [2024-11-28 02:23:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:06,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:06,243 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 [2024-11-28 02:23:06,246 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 [2024-11-28 02:23:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257577834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:06,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-28 02:23:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143101013] [2024-11-28 02:23:06,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:06,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:23:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:06,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:23:06,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:23:06,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:23:06,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 542 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:06,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:06,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:23:06,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:07,470 INFO L124 PetriNetUnfolderBase]: 1283/2426 cut-off events. [2024-11-28 02:23:07,470 INFO L125 PetriNetUnfolderBase]: For 10633/10666 co-relation queries the response was YES. [2024-11-28 02:23:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10039 conditions, 2426 events. 1283/2426 cut-off events. For 10633/10666 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14307 event pairs, 208 based on Foata normal form. 73/2456 useless extension candidates. Maximal degree in co-relation 10013. Up to 622 conditions per place. [2024-11-28 02:23:07,498 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 188 selfloop transitions, 19 changer transitions 0/220 dead transitions. [2024-11-28 02:23:07,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 220 transitions, 2136 flow [2024-11-28 02:23:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:23:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2024-11-28 02:23:07,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35248447204968947 [2024-11-28 02:23:07,500 INFO L175 Difference]: Start difference. First operand has 104 places, 74 transitions, 542 flow. Second operand 14 states and 227 transitions. [2024-11-28 02:23:07,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 220 transitions, 2136 flow [2024-11-28 02:23:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 220 transitions, 2103 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-28 02:23:07,518 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 539 flow [2024-11-28 02:23:07,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=539, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2024-11-28 02:23:07,519 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-28 02:23:07,519 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 539 flow [2024-11-28 02:23:07,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:07,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:07,519 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:07,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:23:07,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:07,723 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:07,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2057559061, now seen corresponding path program 1 times [2024-11-28 02:23:07,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:07,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070861672] [2024-11-28 02:23:07,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:07,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070861672] [2024-11-28 02:23:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070861672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416148140] [2024-11-28 02:23:07,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:07,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:07,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:23:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:07,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:07,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:07,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:07,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416148140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:07,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:07,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 02:23:07,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004104285] [2024-11-28 02:23:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:07,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:07,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:07,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:23:07,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:23:07,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:07,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:07,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:23:07,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:08,490 INFO L124 PetriNetUnfolderBase]: 1174/2200 cut-off events. [2024-11-28 02:23:08,491 INFO L125 PetriNetUnfolderBase]: For 10755/10755 co-relation queries the response was YES. [2024-11-28 02:23:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9614 conditions, 2200 events. 1174/2200 cut-off events. For 10755/10755 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12767 event pairs, 106 based on Foata normal form. 88/2254 useless extension candidates. Maximal degree in co-relation 9589. Up to 682 conditions per place. [2024-11-28 02:23:08,514 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 104 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-11-28 02:23:08,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 133 transitions, 1293 flow [2024-11-28 02:23:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:23:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-28 02:23:08,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-11-28 02:23:08,516 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 539 flow. Second operand 6 states and 136 transitions. [2024-11-28 02:23:08,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 133 transitions, 1293 flow [2024-11-28 02:23:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 1224 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-28 02:23:08,533 INFO L231 Difference]: Finished difference. Result has 101 places, 72 transitions, 546 flow [2024-11-28 02:23:08,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=101, PETRI_TRANSITIONS=72} [2024-11-28 02:23:08,533 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2024-11-28 02:23:08,534 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 72 transitions, 546 flow [2024-11-28 02:23:08,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:08,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:08,534 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:08,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:08,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:08,735 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:08,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -640177930, now seen corresponding path program 1 times [2024-11-28 02:23:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833921423] [2024-11-28 02:23:08,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:08,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833921423] [2024-11-28 02:23:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833921423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536481763] [2024-11-28 02:23:08,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:08,818 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:08,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:23:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:08,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:08,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:08,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536481763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:08,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 02:23:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86611054] [2024-11-28 02:23:09,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:09,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:23:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:09,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:23:09,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:09,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:23:09,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 72 transitions, 546 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:09,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:09,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:23:09,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:09,901 INFO L124 PetriNetUnfolderBase]: 1838/3434 cut-off events. [2024-11-28 02:23:09,902 INFO L125 PetriNetUnfolderBase]: For 17544/17561 co-relation queries the response was YES. [2024-11-28 02:23:09,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15416 conditions, 3434 events. 1838/3434 cut-off events. For 17544/17561 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20933 event pairs, 402 based on Foata normal form. 149/3538 useless extension candidates. Maximal degree in co-relation 15392. Up to 1130 conditions per place. [2024-11-28 02:23:09,937 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 180 selfloop transitions, 26 changer transitions 0/216 dead transitions. [2024-11-28 02:23:09,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 216 transitions, 2104 flow [2024-11-28 02:23:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:23:09,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-11-28 02:23:09,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-11-28 02:23:09,939 INFO L175 Difference]: Start difference. First operand has 101 places, 72 transitions, 546 flow. Second operand 10 states and 238 transitions. [2024-11-28 02:23:09,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 216 transitions, 2104 flow [2024-11-28 02:23:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 216 transitions, 2029 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-28 02:23:09,963 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 689 flow [2024-11-28 02:23:09,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=689, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2024-11-28 02:23:09,964 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-28 02:23:09,964 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 689 flow [2024-11-28 02:23:09,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:09,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:09,964 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:09,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:23:10,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:23:10,165 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:10,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 131735622, now seen corresponding path program 1 times [2024-11-28 02:23:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042920048] [2024-11-28 02:23:10,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042920048] [2024-11-28 02:23:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042920048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640010889] [2024-11-28 02:23:10,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:10,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:10,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:10,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:23:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:10,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:10,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:10,388 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:10,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640010889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:10,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:10,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 02:23:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557861186] [2024-11-28 02:23:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:10,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:10,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:10,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:23:10,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:23:10,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:10,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:10,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:23:10,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:11,057 INFO L124 PetriNetUnfolderBase]: 1991/3684 cut-off events. [2024-11-28 02:23:11,057 INFO L125 PetriNetUnfolderBase]: For 18253/18387 co-relation queries the response was YES. [2024-11-28 02:23:11,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15643 conditions, 3684 events. 1991/3684 cut-off events. For 18253/18387 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22969 event pairs, 205 based on Foata normal form. 223/3889 useless extension candidates. Maximal degree in co-relation 15617. Up to 1178 conditions per place. [2024-11-28 02:23:11,090 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 188 selfloop transitions, 9 changer transitions 0/214 dead transitions. [2024-11-28 02:23:11,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 214 transitions, 2311 flow [2024-11-28 02:23:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:23:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-28 02:23:11,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-28 02:23:11,092 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 689 flow. Second operand 6 states and 132 transitions. [2024-11-28 02:23:11,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 214 transitions, 2311 flow [2024-11-28 02:23:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 214 transitions, 2269 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 02:23:11,115 INFO L231 Difference]: Finished difference. Result has 109 places, 84 transitions, 685 flow [2024-11-28 02:23:11,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=109, PETRI_TRANSITIONS=84} [2024-11-28 02:23:11,116 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-28 02:23:11,116 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 685 flow [2024-11-28 02:23:11,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:11,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:11,117 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:11,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:11,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:23:11,317 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:11,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash -211162380, now seen corresponding path program 1 times [2024-11-28 02:23:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991328258] [2024-11-28 02:23:11,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:11,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991328258] [2024-11-28 02:23:11,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991328258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514951751] [2024-11-28 02:23:11,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:11,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:11,391 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:11,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:23:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:11,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:11,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:11,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514951751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:11,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 02:23:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929393198] [2024-11-28 02:23:11,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:11,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:23:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:11,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:23:11,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:11,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-28 02:23:11,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 685 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 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) [2024-11-28 02:23:11,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:11,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-28 02:23:11,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:12,639 INFO L124 PetriNetUnfolderBase]: 3180/5819 cut-off events. [2024-11-28 02:23:12,639 INFO L125 PetriNetUnfolderBase]: For 32421/32635 co-relation queries the response was YES. [2024-11-28 02:23:12,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25966 conditions, 5819 events. 3180/5819 cut-off events. For 32421/32635 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 38116 event pairs, 732 based on Foata normal form. 345/6087 useless extension candidates. Maximal degree in co-relation 25939. Up to 1942 conditions per place. [2024-11-28 02:23:12,682 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 325 selfloop transitions, 13 changer transitions 0/355 dead transitions. [2024-11-28 02:23:12,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 355 transitions, 3881 flow [2024-11-28 02:23:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:23:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-11-28 02:23:12,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 02:23:12,685 INFO L175 Difference]: Start difference. First operand has 109 places, 84 transitions, 685 flow. Second operand 10 states and 230 transitions. [2024-11-28 02:23:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 355 transitions, 3881 flow [2024-11-28 02:23:12,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 355 transitions, 3837 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-28 02:23:12,717 INFO L231 Difference]: Finished difference. Result has 115 places, 91 transitions, 751 flow [2024-11-28 02:23:12,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=751, PETRI_PLACES=115, PETRI_TRANSITIONS=91} [2024-11-28 02:23:12,718 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-11-28 02:23:12,718 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 91 transitions, 751 flow [2024-11-28 02:23:12,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 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) [2024-11-28 02:23:12,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:12,719 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:23:12,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:23:12,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:23:12,923 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:12,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1030648006, now seen corresponding path program 2 times [2024-11-28 02:23:12,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:12,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047809627] [2024-11-28 02:23:12,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:12,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:12,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047809627] [2024-11-28 02:23:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047809627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487880941] [2024-11-28 02:23:13,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:13,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:13,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:13,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:23:13,255 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:13,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:13,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:23:13,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487880941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:13,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-28 02:23:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586196534] [2024-11-28 02:23:13,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:13,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:23:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:13,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:23:13,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:13,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:13,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 91 transitions, 751 flow. Second operand has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:13,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:13,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:14,974 INFO L124 PetriNetUnfolderBase]: 2868/5072 cut-off events. [2024-11-28 02:23:14,974 INFO L125 PetriNetUnfolderBase]: For 25840/25893 co-relation queries the response was YES. [2024-11-28 02:23:14,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22765 conditions, 5072 events. 2868/5072 cut-off events. For 25840/25893 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 30636 event pairs, 1706 based on Foata normal form. 38/5038 useless extension candidates. Maximal degree in co-relation 22736. Up to 3289 conditions per place. [2024-11-28 02:23:15,016 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 142 selfloop transitions, 19 changer transitions 30/201 dead transitions. [2024-11-28 02:23:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 201 transitions, 2080 flow [2024-11-28 02:23:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:23:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-11-28 02:23:15,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35093167701863354 [2024-11-28 02:23:15,018 INFO L175 Difference]: Start difference. First operand has 115 places, 91 transitions, 751 flow. Second operand 14 states and 226 transitions. [2024-11-28 02:23:15,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 201 transitions, 2080 flow [2024-11-28 02:23:15,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 201 transitions, 2022 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 02:23:15,062 INFO L231 Difference]: Finished difference. Result has 121 places, 80 transitions, 660 flow [2024-11-28 02:23:15,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=660, PETRI_PLACES=121, PETRI_TRANSITIONS=80} [2024-11-28 02:23:15,063 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2024-11-28 02:23:15,064 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 80 transitions, 660 flow [2024-11-28 02:23:15,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:15,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:15,064 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:15,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:15,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:23:15,264 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:15,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1063564391, now seen corresponding path program 3 times [2024-11-28 02:23:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858574968] [2024-11-28 02:23:15,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:15,284 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:23:15,284 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:15,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858574968] [2024-11-28 02:23:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858574968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162921232] [2024-11-28 02:23:15,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:15,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:15,487 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:15,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:23:15,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:23:15,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:15,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:23:15,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:15,693 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 23 treesize of output 1 [2024-11-28 02:23:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:16,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:16,814 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 20 treesize of output 18 [2024-11-28 02:23:16,820 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 26 treesize of output 20 [2024-11-28 02:23:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162921232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:17,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2024-11-28 02:23:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733304216] [2024-11-28 02:23:17,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:17,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 02:23:17,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:17,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 02:23:17,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:23:17,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:17,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 80 transitions, 660 flow. Second operand has 36 states, 36 states have (on average 10.63888888888889) internal successors, (383), 36 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:17,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:17,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:17,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:20,417 INFO L124 PetriNetUnfolderBase]: 4318/7351 cut-off events. [2024-11-28 02:23:20,417 INFO L125 PetriNetUnfolderBase]: For 33417/33523 co-relation queries the response was YES. [2024-11-28 02:23:20,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32036 conditions, 7351 events. 4318/7351 cut-off events. For 33417/33523 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 47093 event pairs, 1020 based on Foata normal form. 135/7465 useless extension candidates. Maximal degree in co-relation 32007. Up to 1849 conditions per place. [2024-11-28 02:23:20,464 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 209 selfloop transitions, 41 changer transitions 100/360 dead transitions. [2024-11-28 02:23:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 360 transitions, 3707 flow [2024-11-28 02:23:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:23:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:23:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 423 transitions. [2024-11-28 02:23:20,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3536789297658863 [2024-11-28 02:23:20,466 INFO L175 Difference]: Start difference. First operand has 121 places, 80 transitions, 660 flow. Second operand 26 states and 423 transitions. [2024-11-28 02:23:20,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 360 transitions, 3707 flow [2024-11-28 02:23:20,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 360 transitions, 3561 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-28 02:23:20,502 INFO L231 Difference]: Finished difference. Result has 146 places, 91 transitions, 877 flow [2024-11-28 02:23:20,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=877, PETRI_PLACES=146, PETRI_TRANSITIONS=91} [2024-11-28 02:23:20,503 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 100 predicate places. [2024-11-28 02:23:20,503 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 91 transitions, 877 flow [2024-11-28 02:23:20,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.63888888888889) internal successors, (383), 36 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:20,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:20,503 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:23:20,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:20,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:23:20,703 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:20,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash 349584640, now seen corresponding path program 3 times [2024-11-28 02:23:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937623706] [2024-11-28 02:23:20,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:20,737 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:23:20,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:21,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937623706] [2024-11-28 02:23:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937623706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714729628] [2024-11-28 02:23:21,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:21,257 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:21,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:23:21,377 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:23:21,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:21,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:23:21,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:21,461 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 23 treesize of output 1 [2024-11-28 02:23:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:21,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:22,523 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 20 treesize of output 18 [2024-11-28 02:23:22,529 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 26 treesize of output 20 [2024-11-28 02:23:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:22,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714729628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:22,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-28 02:23:22,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948545079] [2024-11-28 02:23:22,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:22,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 02:23:22,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:22,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 02:23:22,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:23:23,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:23,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 91 transitions, 877 flow. Second operand has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:23,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:23,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:23,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:27,132 INFO L124 PetriNetUnfolderBase]: 5620/9838 cut-off events. [2024-11-28 02:23:27,132 INFO L125 PetriNetUnfolderBase]: For 81490/82419 co-relation queries the response was YES. [2024-11-28 02:23:27,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49438 conditions, 9838 events. 5620/9838 cut-off events. For 81490/82419 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 67333 event pairs, 1134 based on Foata normal form. 450/10206 useless extension candidates. Maximal degree in co-relation 49396. Up to 1856 conditions per place. [2024-11-28 02:23:27,197 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 442 selfloop transitions, 64 changer transitions 0/522 dead transitions. [2024-11-28 02:23:27,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 522 transitions, 6562 flow [2024-11-28 02:23:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:23:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-28 02:23:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 542 transitions. [2024-11-28 02:23:27,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36820652173913043 [2024-11-28 02:23:27,199 INFO L175 Difference]: Start difference. First operand has 146 places, 91 transitions, 877 flow. Second operand 32 states and 542 transitions. [2024-11-28 02:23:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 522 transitions, 6562 flow [2024-11-28 02:23:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 522 transitions, 6264 flow, removed 132 selfloop flow, removed 17 redundant places. [2024-11-28 02:23:27,270 INFO L231 Difference]: Finished difference. Result has 151 places, 136 transitions, 1395 flow [2024-11-28 02:23:27,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1395, PETRI_PLACES=151, PETRI_TRANSITIONS=136} [2024-11-28 02:23:27,270 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 105 predicate places. [2024-11-28 02:23:27,271 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 136 transitions, 1395 flow [2024-11-28 02:23:27,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:27,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:27,271 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:23:27,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:23:27,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:23:27,471 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:27,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash 349584641, now seen corresponding path program 3 times [2024-11-28 02:23:27,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:27,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467214819] [2024-11-28 02:23:27,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:27,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:27,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:23:27,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467214819] [2024-11-28 02:23:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467214819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259053140] [2024-11-28 02:23:28,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:28,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:28,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:28,100 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:28,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:23:28,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:23:28,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:28,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:23:28,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:28,299 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 23 treesize of output 1 [2024-11-28 02:23:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:28,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:29,312 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 [2024-11-28 02:23:29,317 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 22 treesize of output 16 [2024-11-28 02:23:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259053140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:29,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-28 02:23:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471900832] [2024-11-28 02:23:29,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:29,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 02:23:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:29,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 02:23:29,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:23:30,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:30,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 136 transitions, 1395 flow. Second operand has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:30,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:30,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:30,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:34,073 INFO L124 PetriNetUnfolderBase]: 5263/9363 cut-off events. [2024-11-28 02:23:34,073 INFO L125 PetriNetUnfolderBase]: For 79664/80210 co-relation queries the response was YES. [2024-11-28 02:23:34,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49415 conditions, 9363 events. 5263/9363 cut-off events. For 79664/80210 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 63647 event pairs, 1132 based on Foata normal form. 414/9720 useless extension candidates. Maximal degree in co-relation 49375. Up to 1856 conditions per place. [2024-11-28 02:23:34,136 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 422 selfloop transitions, 63 changer transitions 0/501 dead transitions. [2024-11-28 02:23:34,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 501 transitions, 6228 flow [2024-11-28 02:23:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 02:23:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-28 02:23:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 522 transitions. [2024-11-28 02:23:34,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36605890603085556 [2024-11-28 02:23:34,138 INFO L175 Difference]: Start difference. First operand has 151 places, 136 transitions, 1395 flow. Second operand 31 states and 522 transitions. [2024-11-28 02:23:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 501 transitions, 6228 flow [2024-11-28 02:23:34,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 501 transitions, 6191 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-28 02:23:34,223 INFO L231 Difference]: Finished difference. Result has 172 places, 134 transitions, 1467 flow [2024-11-28 02:23:34,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1467, PETRI_PLACES=172, PETRI_TRANSITIONS=134} [2024-11-28 02:23:34,225 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 126 predicate places. [2024-11-28 02:23:34,225 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 134 transitions, 1467 flow [2024-11-28 02:23:34,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:34,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:34,225 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:34,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:23:34,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:23:34,426 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:34,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1804886050, now seen corresponding path program 2 times [2024-11-28 02:23:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036479475] [2024-11-28 02:23:34,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:34,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:34,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:35,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036479475] [2024-11-28 02:23:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036479475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028807998] [2024-11-28 02:23:35,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:35,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:35,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:35,045 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:35,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:23:35,180 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:35,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:35,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 02:23:35,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:35,304 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 [2024-11-28 02:23:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:35,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:35,894 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 [2024-11-28 02:23:35,898 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 [2024-11-28 02:23:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:35,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028807998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:35,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:35,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2024-11-28 02:23:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214567520] [2024-11-28 02:23:35,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:35,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 02:23:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:35,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 02:23:35,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 02:23:36,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:36,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 134 transitions, 1467 flow. Second operand has 35 states, 35 states have (on average 10.742857142857142) internal successors, (376), 35 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:36,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:36,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:36,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:39,817 INFO L124 PetriNetUnfolderBase]: 4793/8252 cut-off events. [2024-11-28 02:23:39,817 INFO L125 PetriNetUnfolderBase]: For 79507/79873 co-relation queries the response was YES. [2024-11-28 02:23:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45359 conditions, 8252 events. 4793/8252 cut-off events. For 79507/79873 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 54048 event pairs, 800 based on Foata normal form. 152/8360 useless extension candidates. Maximal degree in co-relation 45318. Up to 1660 conditions per place. [2024-11-28 02:23:39,868 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 565 selfloop transitions, 47 changer transitions 10/644 dead transitions. [2024-11-28 02:23:39,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 644 transitions, 8778 flow [2024-11-28 02:23:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:23:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-28 02:23:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 511 transitions. [2024-11-28 02:23:39,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34714673913043476 [2024-11-28 02:23:39,870 INFO L175 Difference]: Start difference. First operand has 172 places, 134 transitions, 1467 flow. Second operand 32 states and 511 transitions. [2024-11-28 02:23:39,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 644 transitions, 8778 flow [2024-11-28 02:23:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 644 transitions, 7971 flow, removed 23 selfloop flow, removed 30 redundant places. [2024-11-28 02:23:39,938 INFO L231 Difference]: Finished difference. Result has 176 places, 136 transitions, 1476 flow [2024-11-28 02:23:39,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1476, PETRI_PLACES=176, PETRI_TRANSITIONS=136} [2024-11-28 02:23:39,939 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 130 predicate places. [2024-11-28 02:23:39,939 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 136 transitions, 1476 flow [2024-11-28 02:23:39,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.742857142857142) internal successors, (376), 35 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:39,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:39,939 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:39,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:40,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:40,140 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:40,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1796563495, now seen corresponding path program 4 times [2024-11-28 02:23:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594421029] [2024-11-28 02:23:40,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:40,156 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:40,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594421029] [2024-11-28 02:23:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594421029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459089727] [2024-11-28 02:23:40,718 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:40,720 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:40,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:23:40,898 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:40,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:40,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:23:40,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:41,005 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 [2024-11-28 02:23:41,083 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:23:41,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:23:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:41,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:42,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-28 02:23:42,326 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 118 treesize of output 110 [2024-11-28 02:23:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459089727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:42,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:42,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-28 02:23:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494096943] [2024-11-28 02:23:42,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:42,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 02:23:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:42,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 02:23:42,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:23:42,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:23:42,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 136 transitions, 1476 flow. Second operand has 39 states, 39 states have (on average 11.487179487179487) internal successors, (448), 39 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:42,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:42,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:23:42,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:45,028 INFO L124 PetriNetUnfolderBase]: 3880/7295 cut-off events. [2024-11-28 02:23:45,028 INFO L125 PetriNetUnfolderBase]: For 74275/74568 co-relation queries the response was YES. [2024-11-28 02:23:45,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40160 conditions, 7295 events. 3880/7295 cut-off events. For 74275/74568 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 50234 event pairs, 797 based on Foata normal form. 80/7326 useless extension candidates. Maximal degree in co-relation 40117. Up to 2131 conditions per place. [2024-11-28 02:23:45,083 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 457 selfloop transitions, 46 changer transitions 0/528 dead transitions. [2024-11-28 02:23:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 528 transitions, 6820 flow [2024-11-28 02:23:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:23:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:23:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 314 transitions. [2024-11-28 02:23:45,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34130434782608693 [2024-11-28 02:23:45,085 INFO L175 Difference]: Start difference. First operand has 176 places, 136 transitions, 1476 flow. Second operand 20 states and 314 transitions. [2024-11-28 02:23:45,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 528 transitions, 6820 flow [2024-11-28 02:23:45,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 528 transitions, 6629 flow, removed 8 selfloop flow, removed 28 redundant places. [2024-11-28 02:23:45,155 INFO L231 Difference]: Finished difference. Result has 168 places, 136 transitions, 1400 flow [2024-11-28 02:23:45,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1400, PETRI_PLACES=168, PETRI_TRANSITIONS=136} [2024-11-28 02:23:45,156 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-11-28 02:23:45,156 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 136 transitions, 1400 flow [2024-11-28 02:23:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.487179487179487) internal successors, (448), 39 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:45,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:45,156 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:23:45,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:45,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:45,357 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:45,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -898551104, now seen corresponding path program 4 times [2024-11-28 02:23:45,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:45,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690700553] [2024-11-28 02:23:45,357 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:45,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:45,375 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:45,375 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690700553] [2024-11-28 02:23:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690700553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450550161] [2024-11-28 02:23:46,033 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:46,035 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:46,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:23:46,200 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:46,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:46,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 02:23:46,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:46,352 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 [2024-11-28 02:23:46,449 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:23:46,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:23:46,554 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:23:46,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:23:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:46,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:48,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-28 02:23:48,125 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 54 treesize of output 50 [2024-11-28 02:23:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450550161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:48,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2024-11-28 02:23:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735986761] [2024-11-28 02:23:48,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:48,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 02:23:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:48,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 02:23:48,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:23:49,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:49,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 136 transitions, 1400 flow. Second operand has 44 states, 44 states have (on average 10.522727272727273) internal successors, (463), 44 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:49,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:49,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:49,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:51,886 INFO L124 PetriNetUnfolderBase]: 4674/8493 cut-off events. [2024-11-28 02:23:51,886 INFO L125 PetriNetUnfolderBase]: For 75395/75793 co-relation queries the response was YES. [2024-11-28 02:23:51,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45366 conditions, 8493 events. 4674/8493 cut-off events. For 75395/75793 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 57299 event pairs, 923 based on Foata normal form. 96/8543 useless extension candidates. Maximal degree in co-relation 45327. Up to 2588 conditions per place. [2024-11-28 02:23:51,946 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 367 selfloop transitions, 60 changer transitions 0/444 dead transitions. [2024-11-28 02:23:51,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 444 transitions, 5825 flow [2024-11-28 02:23:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:23:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:23:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 329 transitions. [2024-11-28 02:23:51,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.325098814229249 [2024-11-28 02:23:51,947 INFO L175 Difference]: Start difference. First operand has 168 places, 136 transitions, 1400 flow. Second operand 22 states and 329 transitions. [2024-11-28 02:23:51,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 444 transitions, 5825 flow [2024-11-28 02:23:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 444 transitions, 5428 flow, removed 10 selfloop flow, removed 18 redundant places. [2024-11-28 02:23:52,018 INFO L231 Difference]: Finished difference. Result has 173 places, 139 transitions, 1517 flow [2024-11-28 02:23:52,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1517, PETRI_PLACES=173, PETRI_TRANSITIONS=139} [2024-11-28 02:23:52,019 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2024-11-28 02:23:52,019 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 139 transitions, 1517 flow [2024-11-28 02:23:52,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.522727272727273) internal successors, (463), 44 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:52,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:52,020 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:23:52,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:52,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 02:23:52,220 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:52,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash -898551103, now seen corresponding path program 4 times [2024-11-28 02:23:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080257447] [2024-11-28 02:23:52,221 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:52,250 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:52,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080257447] [2024-11-28 02:23:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080257447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524310197] [2024-11-28 02:23:52,955 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:52,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:52,957 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:52,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:23:53,108 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:53,108 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:53,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 02:23:53,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:53,240 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 [2024-11-28 02:23:53,323 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:23:53,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 02:23:53,415 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:23:53,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 02:23:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:53,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:55,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-28 02:23:56,001 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 102 treesize of output 94 [2024-11-28 02:23:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524310197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:56,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:56,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2024-11-28 02:23:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078141] [2024-11-28 02:23:56,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:56,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 02:23:56,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:56,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 02:23:56,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:23:56,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:23:56,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 139 transitions, 1517 flow. Second operand has 44 states, 44 states have (on average 10.590909090909092) internal successors, (466), 44 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:56,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:23:56,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:23:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:23:59,427 INFO L124 PetriNetUnfolderBase]: 3792/7250 cut-off events. [2024-11-28 02:23:59,427 INFO L125 PetriNetUnfolderBase]: For 70520/70863 co-relation queries the response was YES. [2024-11-28 02:23:59,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39524 conditions, 7250 events. 3792/7250 cut-off events. For 70520/70863 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 50227 event pairs, 710 based on Foata normal form. 80/7301 useless extension candidates. Maximal degree in co-relation 39484. Up to 2064 conditions per place. [2024-11-28 02:23:59,485 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 363 selfloop transitions, 60 changer transitions 0/442 dead transitions. [2024-11-28 02:23:59,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 442 transitions, 5553 flow [2024-11-28 02:23:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:23:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:23:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 329 transitions. [2024-11-28 02:23:59,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.325098814229249 [2024-11-28 02:23:59,487 INFO L175 Difference]: Start difference. First operand has 173 places, 139 transitions, 1517 flow. Second operand 22 states and 329 transitions. [2024-11-28 02:23:59,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 442 transitions, 5553 flow [2024-11-28 02:23:59,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 442 transitions, 5321 flow, removed 7 selfloop flow, removed 24 redundant places. [2024-11-28 02:23:59,577 INFO L231 Difference]: Finished difference. Result has 170 places, 138 transitions, 1394 flow [2024-11-28 02:23:59,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1394, PETRI_PLACES=170, PETRI_TRANSITIONS=138} [2024-11-28 02:23:59,577 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-11-28 02:23:59,577 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 138 transitions, 1394 flow [2024-11-28 02:23:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.590909090909092) internal successors, (466), 44 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:59,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:23:59,578 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:59,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:59,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 02:23:59,778 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:23:59,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1903191872, now seen corresponding path program 3 times [2024-11-28 02:23:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:59,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837926125] [2024-11-28 02:23:59,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:59,823 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:23:59,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837926125] [2024-11-28 02:24:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837926125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900116597] [2024-11-28 02:24:00,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:24:00,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:00,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:00,589 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:24:00,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:24:00,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:00,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:24:00,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:01,066 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 15 treesize of output 1 [2024-11-28 02:24:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:01,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:02,045 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 [2024-11-28 02:24:02,052 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 [2024-11-28 02:24:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900116597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:02,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:02,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 50 [2024-11-28 02:24:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159589050] [2024-11-28 02:24:02,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:02,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 02:24:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:02,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 02:24:02,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2493, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:24:03,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:24:03,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 138 transitions, 1394 flow. Second operand has 52 states, 52 states have (on average 10.615384615384615) internal successors, (552), 52 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:03,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:03,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:24:03,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:10,011 INFO L124 PetriNetUnfolderBase]: 4367/7448 cut-off events. [2024-11-28 02:24:10,011 INFO L125 PetriNetUnfolderBase]: For 61296/61720 co-relation queries the response was YES. [2024-11-28 02:24:10,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39618 conditions, 7448 events. 4367/7448 cut-off events. For 61296/61720 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 47890 event pairs, 456 based on Foata normal form. 92/7507 useless extension candidates. Maximal degree in co-relation 39581. Up to 1132 conditions per place. [2024-11-28 02:24:10,064 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 777 selfloop transitions, 74 changer transitions 5/878 dead transitions. [2024-11-28 02:24:10,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 878 transitions, 11058 flow [2024-11-28 02:24:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 02:24:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-28 02:24:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 860 transitions. [2024-11-28 02:24:10,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3527481542247744 [2024-11-28 02:24:10,067 INFO L175 Difference]: Start difference. First operand has 170 places, 138 transitions, 1394 flow. Second operand 53 states and 860 transitions. [2024-11-28 02:24:10,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 878 transitions, 11058 flow [2024-11-28 02:24:10,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 878 transitions, 10179 flow, removed 16 selfloop flow, removed 20 redundant places. [2024-11-28 02:24:10,275 INFO L231 Difference]: Finished difference. Result has 208 places, 162 transitions, 1726 flow [2024-11-28 02:24:10,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1726, PETRI_PLACES=208, PETRI_TRANSITIONS=162} [2024-11-28 02:24:10,276 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2024-11-28 02:24:10,276 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 162 transitions, 1726 flow [2024-11-28 02:24:10,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.615384615384615) internal successors, (552), 52 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:10,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:10,277 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:10,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:24:10,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:10,481 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:10,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1903191873, now seen corresponding path program 5 times [2024-11-28 02:24:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:10,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666008801] [2024-11-28 02:24:10,487 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:10,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:10,541 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 02:24:10,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666008801] [2024-11-28 02:24:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666008801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423898522] [2024-11-28 02:24:11,087 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:11,090 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:11,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:24:11,247 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 02:24:11,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:11,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 02:24:11,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:11,432 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 15 treesize of output 1 [2024-11-28 02:24:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:11,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:12,208 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 [2024-11-28 02:24:12,210 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 [2024-11-28 02:24:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423898522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:12,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:12,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-28 02:24:12,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605390211] [2024-11-28 02:24:12,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:12,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 02:24:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:12,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 02:24:12,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:24:12,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:24:12,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 162 transitions, 1726 flow. Second operand has 43 states, 43 states have (on average 11.511627906976743) internal successors, (495), 43 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:12,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:12,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:24:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:15,880 INFO L124 PetriNetUnfolderBase]: 3490/6496 cut-off events. [2024-11-28 02:24:15,880 INFO L125 PetriNetUnfolderBase]: For 57228/57565 co-relation queries the response was YES. [2024-11-28 02:24:15,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35439 conditions, 6496 events. 3490/6496 cut-off events. For 57228/57565 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 43723 event pairs, 780 based on Foata normal form. 71/6499 useless extension candidates. Maximal degree in co-relation 35397. Up to 1271 conditions per place. [2024-11-28 02:24:15,918 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 496 selfloop transitions, 59 changer transitions 0/581 dead transitions. [2024-11-28 02:24:15,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 581 transitions, 7147 flow [2024-11-28 02:24:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:24:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:24:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 416 transitions. [2024-11-28 02:24:15,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3617391304347826 [2024-11-28 02:24:15,919 INFO L175 Difference]: Start difference. First operand has 208 places, 162 transitions, 1726 flow. Second operand 25 states and 416 transitions. [2024-11-28 02:24:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 581 transitions, 7147 flow [2024-11-28 02:24:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 581 transitions, 6891 flow, removed 17 selfloop flow, removed 36 redundant places. [2024-11-28 02:24:15,978 INFO L231 Difference]: Finished difference. Result has 198 places, 163 transitions, 1633 flow [2024-11-28 02:24:15,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1633, PETRI_PLACES=198, PETRI_TRANSITIONS=163} [2024-11-28 02:24:15,979 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 152 predicate places. [2024-11-28 02:24:15,979 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 163 transitions, 1633 flow [2024-11-28 02:24:15,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.511627906976743) internal successors, (495), 43 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:15,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:15,979 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-28 02:24:15,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:16,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:16,180 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -672123126, now seen corresponding path program 5 times [2024-11-28 02:24:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337277550] [2024-11-28 02:24:16,181 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:16,208 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:24:16,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337277550] [2024-11-28 02:24:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337277550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073455757] [2024-11-28 02:24:16,908 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:16,910 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:16,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:24:17,068 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:24:17,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:17,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 02:24:17,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:17,092 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 [2024-11-28 02:24:17,138 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:24:17,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-28 02:24:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:17,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:20,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-28 02:24:20,018 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 102 treesize of output 94 [2024-11-28 02:24:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:20,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073455757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:20,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2024-11-28 02:24:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728062858] [2024-11-28 02:24:20,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:20,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 02:24:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:20,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 02:24:20,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:24:20,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:24:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 163 transitions, 1633 flow. Second operand has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:24:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:23,523 INFO L124 PetriNetUnfolderBase]: 3418/6665 cut-off events. [2024-11-28 02:24:23,523 INFO L125 PetriNetUnfolderBase]: For 54811/55112 co-relation queries the response was YES. [2024-11-28 02:24:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34656 conditions, 6665 events. 3418/6665 cut-off events. For 54811/55112 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45394 event pairs, 635 based on Foata normal form. 102/6666 useless extension candidates. Maximal degree in co-relation 34614. Up to 1126 conditions per place. [2024-11-28 02:24:23,561 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 531 selfloop transitions, 63 changer transitions 0/620 dead transitions. [2024-11-28 02:24:23,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 620 transitions, 8341 flow [2024-11-28 02:24:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:24:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:24:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 440 transitions. [2024-11-28 02:24:23,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36789297658862874 [2024-11-28 02:24:23,563 INFO L175 Difference]: Start difference. First operand has 198 places, 163 transitions, 1633 flow. Second operand 26 states and 440 transitions. [2024-11-28 02:24:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 620 transitions, 8341 flow [2024-11-28 02:24:23,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 620 transitions, 7695 flow, removed 26 selfloop flow, removed 22 redundant places. [2024-11-28 02:24:23,627 INFO L231 Difference]: Finished difference. Result has 203 places, 168 transitions, 1747 flow [2024-11-28 02:24:23,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1747, PETRI_PLACES=203, PETRI_TRANSITIONS=168} [2024-11-28 02:24:23,628 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 157 predicate places. [2024-11-28 02:24:23,628 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 168 transitions, 1747 flow [2024-11-28 02:24:23,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:23,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:23,629 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-28 02:24:23,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:24:23,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 02:24:23,829 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:23,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash -672123127, now seen corresponding path program 5 times [2024-11-28 02:24:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956606964] [2024-11-28 02:24:23,830 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:23,853 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:24:23,853 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956606964] [2024-11-28 02:24:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956606964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897667340] [2024-11-28 02:24:24,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:24,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:24,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:24,444 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:24,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:24:24,594 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:24:24,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:24,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 02:24:24,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:24,620 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 [2024-11-28 02:24:24,664 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:24:24,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:24:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:25,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:27,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-28 02:24:27,401 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 54 treesize of output 50 [2024-11-28 02:24:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897667340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:27,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:27,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2024-11-28 02:24:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544671722] [2024-11-28 02:24:27,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:27,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 02:24:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:27,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 02:24:27,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:24:27,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:24:27,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 168 transitions, 1747 flow. Second operand has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:27,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:27,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:24:27,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:31,106 INFO L124 PetriNetUnfolderBase]: 3364/6573 cut-off events. [2024-11-28 02:24:31,106 INFO L125 PetriNetUnfolderBase]: For 54565/54874 co-relation queries the response was YES. [2024-11-28 02:24:31,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34812 conditions, 6573 events. 3364/6573 cut-off events. For 54565/54874 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 44548 event pairs, 635 based on Foata normal form. 106/6578 useless extension candidates. Maximal degree in co-relation 34768. Up to 1126 conditions per place. [2024-11-28 02:24:31,146 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 530 selfloop transitions, 63 changer transitions 0/619 dead transitions. [2024-11-28 02:24:31,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 619 transitions, 7842 flow [2024-11-28 02:24:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:24:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:24:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 439 transitions. [2024-11-28 02:24:31,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36705685618729095 [2024-11-28 02:24:31,148 INFO L175 Difference]: Start difference. First operand has 203 places, 168 transitions, 1747 flow. Second operand 26 states and 439 transitions. [2024-11-28 02:24:31,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 619 transitions, 7842 flow [2024-11-28 02:24:31,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 619 transitions, 7750 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-11-28 02:24:31,216 INFO L231 Difference]: Finished difference. Result has 211 places, 167 transitions, 1771 flow [2024-11-28 02:24:31,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1771, PETRI_PLACES=211, PETRI_TRANSITIONS=167} [2024-11-28 02:24:31,217 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 165 predicate places. [2024-11-28 02:24:31,217 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 167 transitions, 1771 flow [2024-11-28 02:24:31,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:31,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:31,217 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-28 02:24:31,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:24:31,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 02:24:31,418 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:31,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 367783077, now seen corresponding path program 2 times [2024-11-28 02:24:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027283767] [2024-11-28 02:24:31,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:31,431 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:31,431 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:24:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:31,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027283767] [2024-11-28 02:24:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027283767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:31,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134438500] [2024-11-28 02:24:31,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:31,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:31,483 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:31,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:24:31,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:31,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:31,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:24:31,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:24:31,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:24:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134438500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:31,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:31,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 02:24:31,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257437016] [2024-11-28 02:24:31,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:31,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:24:31,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:31,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:24:31,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:24:31,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-28 02:24:31,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 167 transitions, 1771 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:31,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:31,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-28 02:24:31,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:32,893 INFO L124 PetriNetUnfolderBase]: 3967/7303 cut-off events. [2024-11-28 02:24:32,893 INFO L125 PetriNetUnfolderBase]: For 63480/63840 co-relation queries the response was YES. [2024-11-28 02:24:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39118 conditions, 7303 events. 3967/7303 cut-off events. For 63480/63840 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 48253 event pairs, 886 based on Foata normal form. 169/7347 useless extension candidates. Maximal degree in co-relation 39073. Up to 2840 conditions per place. [2024-11-28 02:24:32,941 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 181 selfloop transitions, 40 changer transitions 30/274 dead transitions. [2024-11-28 02:24:32,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 274 transitions, 3412 flow [2024-11-28 02:24:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:24:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:24:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-11-28 02:24:32,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2024-11-28 02:24:32,943 INFO L175 Difference]: Start difference. First operand has 211 places, 167 transitions, 1771 flow. Second operand 5 states and 99 transitions. [2024-11-28 02:24:32,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 274 transitions, 3412 flow [2024-11-28 02:24:33,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 274 transitions, 3274 flow, removed 1 selfloop flow, removed 28 redundant places. [2024-11-28 02:24:33,013 INFO L231 Difference]: Finished difference. Result has 187 places, 157 transitions, 1639 flow [2024-11-28 02:24:33,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1639, PETRI_PLACES=187, PETRI_TRANSITIONS=157} [2024-11-28 02:24:33,014 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-11-28 02:24:33,014 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 157 transitions, 1639 flow [2024-11-28 02:24:33,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:33,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:33,014 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:33,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:33,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 02:24:33,215 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:33,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1335377625, now seen corresponding path program 6 times [2024-11-28 02:24:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416044275] [2024-11-28 02:24:33,215 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:33,245 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:24:33,247 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:33,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416044275] [2024-11-28 02:24:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416044275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823956437] [2024-11-28 02:24:33,624 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:33,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:33,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:33,627 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:33,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 02:24:33,824 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:24:33,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:33,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:24:33,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:34,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:34,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823956437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:34,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:34,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 47 [2024-11-28 02:24:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330769999] [2024-11-28 02:24:34,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:34,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 02:24:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:34,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 02:24:34,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1880, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:24:35,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:24:35,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 157 transitions, 1639 flow. Second operand has 48 states, 48 states have (on average 10.458333333333334) internal successors, (502), 48 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:35,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:35,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:24:35,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:36,893 INFO L124 PetriNetUnfolderBase]: 3259/5772 cut-off events. [2024-11-28 02:24:36,893 INFO L125 PetriNetUnfolderBase]: For 61524/62030 co-relation queries the response was YES. [2024-11-28 02:24:36,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31631 conditions, 5772 events. 3259/5772 cut-off events. For 61524/62030 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 36820 event pairs, 1263 based on Foata normal form. 56/5798 useless extension candidates. Maximal degree in co-relation 31590. Up to 2460 conditions per place. [2024-11-28 02:24:36,937 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 52 selfloop transitions, 12 changer transitions 383/457 dead transitions. [2024-11-28 02:24:36,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 457 transitions, 6048 flow [2024-11-28 02:24:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:24:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 02:24:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 315 transitions. [2024-11-28 02:24:36,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31126482213438733 [2024-11-28 02:24:36,938 INFO L175 Difference]: Start difference. First operand has 187 places, 157 transitions, 1639 flow. Second operand 22 states and 315 transitions. [2024-11-28 02:24:36,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 457 transitions, 6048 flow [2024-11-28 02:24:37,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 457 transitions, 5852 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-28 02:24:37,032 INFO L231 Difference]: Finished difference. Result has 201 places, 74 transitions, 734 flow [2024-11-28 02:24:37,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=734, PETRI_PLACES=201, PETRI_TRANSITIONS=74} [2024-11-28 02:24:37,033 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 155 predicate places. [2024-11-28 02:24:37,033 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 74 transitions, 734 flow [2024-11-28 02:24:37,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 10.458333333333334) internal successors, (502), 48 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:37,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:37,033 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-28 02:24:37,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 02:24:37,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 02:24:37,234 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:37,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1312458655, now seen corresponding path program 6 times [2024-11-28 02:24:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:37,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099813934] [2024-11-28 02:24:37,235 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:37,290 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:24:37,290 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099813934] [2024-11-28 02:24:38,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099813934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273157733] [2024-11-28 02:24:38,399 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:38,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:38,402 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:38,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:24:38,603 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:24:38,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:38,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 02:24:38,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:38,928 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 15 treesize of output 1 [2024-11-28 02:24:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:39,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:40,051 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 [2024-11-28 02:24:40,054 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 [2024-11-28 02:24:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273157733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:40,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 62 [2024-11-28 02:24:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148252265] [2024-11-28 02:24:40,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:40,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 02:24:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:40,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 02:24:40,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3827, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 02:24:41,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:24:41,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 74 transitions, 734 flow. Second operand has 64 states, 64 states have (on average 10.5) internal successors, (672), 64 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:41,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:41,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:24:41,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:48,227 INFO L124 PetriNetUnfolderBase]: 3511/6163 cut-off events. [2024-11-28 02:24:48,228 INFO L125 PetriNetUnfolderBase]: For 58832/59424 co-relation queries the response was YES. [2024-11-28 02:24:48,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35174 conditions, 6163 events. 3511/6163 cut-off events. For 58832/59424 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 37959 event pairs, 316 based on Foata normal form. 102/6193 useless extension candidates. Maximal degree in co-relation 35143. Up to 937 conditions per place. [2024-11-28 02:24:48,267 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 744 selfloop transitions, 62 changer transitions 0/816 dead transitions. [2024-11-28 02:24:48,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 816 transitions, 10227 flow [2024-11-28 02:24:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:24:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:24:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 829 transitions. [2024-11-28 02:24:48,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3754528985507246 [2024-11-28 02:24:48,269 INFO L175 Difference]: Start difference. First operand has 201 places, 74 transitions, 734 flow. Second operand 48 states and 829 transitions. [2024-11-28 02:24:48,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 816 transitions, 10227 flow [2024-11-28 02:24:48,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 816 transitions, 8335 flow, removed 188 selfloop flow, removed 31 redundant places. [2024-11-28 02:24:48,318 INFO L231 Difference]: Finished difference. Result has 169 places, 105 transitions, 1038 flow [2024-11-28 02:24:48,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1038, PETRI_PLACES=169, PETRI_TRANSITIONS=105} [2024-11-28 02:24:48,319 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-11-28 02:24:48,319 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 105 transitions, 1038 flow [2024-11-28 02:24:48,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 10.5) internal successors, (672), 64 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:48,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:48,320 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-28 02:24:48,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 02:24:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:24:48,520 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1312458656, now seen corresponding path program 6 times [2024-11-28 02:24:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885922363] [2024-11-28 02:24:48,521 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:48,557 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:24:48,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885922363] [2024-11-28 02:24:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885922363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962530804] [2024-11-28 02:24:49,455 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:49,457 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:49,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 02:24:49,651 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:24:49,651 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:49,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 02:24:49,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:49,898 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 [2024-11-28 02:24:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:50,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:50,882 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 [2024-11-28 02:24:50,884 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 [2024-11-28 02:24:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962530804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:50,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 53 [2024-11-28 02:24:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046720655] [2024-11-28 02:24:50,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:50,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 02:24:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:50,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 02:24:50,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:24:52,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:24:52,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 105 transitions, 1038 flow. Second operand has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:52,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:24:52,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:24:52,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:24:57,999 INFO L124 PetriNetUnfolderBase]: 3349/6012 cut-off events. [2024-11-28 02:24:57,999 INFO L125 PetriNetUnfolderBase]: For 38019/38096 co-relation queries the response was YES. [2024-11-28 02:24:58,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30313 conditions, 6012 events. 3349/6012 cut-off events. For 38019/38096 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 36989 event pairs, 344 based on Foata normal form. 102/6083 useless extension candidates. Maximal degree in co-relation 30287. Up to 889 conditions per place. [2024-11-28 02:24:58,040 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 651 selfloop transitions, 62 changer transitions 90/813 dead transitions. [2024-11-28 02:24:58,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 813 transitions, 8483 flow [2024-11-28 02:24:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:24:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:24:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 826 transitions. [2024-11-28 02:24:58,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3740942028985507 [2024-11-28 02:24:58,043 INFO L175 Difference]: Start difference. First operand has 169 places, 105 transitions, 1038 flow. Second operand 48 states and 826 transitions. [2024-11-28 02:24:58,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 813 transitions, 8483 flow [2024-11-28 02:24:58,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 813 transitions, 8265 flow, removed 14 selfloop flow, removed 27 redundant places. [2024-11-28 02:24:58,085 INFO L231 Difference]: Finished difference. Result has 189 places, 104 transitions, 941 flow [2024-11-28 02:24:58,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=941, PETRI_PLACES=189, PETRI_TRANSITIONS=104} [2024-11-28 02:24:58,086 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 143 predicate places. [2024-11-28 02:24:58,086 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 104 transitions, 941 flow [2024-11-28 02:24:58,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:58,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:24:58,086 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:58,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 02:24:58,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-28 02:24:58,287 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:24:58,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1320371999, now seen corresponding path program 7 times [2024-11-28 02:24:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395193619] [2024-11-28 02:24:58,288 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395193619] [2024-11-28 02:24:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395193619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113989776] [2024-11-28 02:24:59,099 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:59,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:59,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:59,102 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:59,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 02:24:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:59,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 02:24:59,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:59,520 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 [2024-11-28 02:25:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:00,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:00,446 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 [2024-11-28 02:25:00,448 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 [2024-11-28 02:25:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:00,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113989776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:00,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:00,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-28 02:25:00,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539242256] [2024-11-28 02:25:00,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:00,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 02:25:00,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:00,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 02:25:00,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:25:01,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:25:01,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 104 transitions, 941 flow. Second operand has 53 states, 53 states have (on average 11.471698113207546) internal successors, (608), 53 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:01,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:01,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:25:01,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:05,137 INFO L124 PetriNetUnfolderBase]: 3370/6287 cut-off events. [2024-11-28 02:25:05,138 INFO L125 PetriNetUnfolderBase]: For 42637/42798 co-relation queries the response was YES. [2024-11-28 02:25:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30719 conditions, 6287 events. 3370/6287 cut-off events. For 42637/42798 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 40687 event pairs, 465 based on Foata normal form. 65/6328 useless extension candidates. Maximal degree in co-relation 30694. Up to 1440 conditions per place. [2024-11-28 02:25:05,172 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 656 selfloop transitions, 36 changer transitions 0/710 dead transitions. [2024-11-28 02:25:05,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 710 transitions, 9149 flow [2024-11-28 02:25:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 02:25:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 02:25:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 466 transitions. [2024-11-28 02:25:05,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3493253373313343 [2024-11-28 02:25:05,174 INFO L175 Difference]: Start difference. First operand has 189 places, 104 transitions, 941 flow. Second operand 29 states and 466 transitions. [2024-11-28 02:25:05,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 710 transitions, 9149 flow [2024-11-28 02:25:05,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 710 transitions, 7928 flow, removed 48 selfloop flow, removed 46 redundant places. [2024-11-28 02:25:05,205 INFO L231 Difference]: Finished difference. Result has 173 places, 108 transitions, 953 flow [2024-11-28 02:25:05,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=953, PETRI_PLACES=173, PETRI_TRANSITIONS=108} [2024-11-28 02:25:05,205 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2024-11-28 02:25:05,205 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 108 transitions, 953 flow [2024-11-28 02:25:05,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.471698113207546) internal successors, (608), 53 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:05,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:05,206 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:05,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 02:25:05,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 02:25:05,407 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:05,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1320371998, now seen corresponding path program 4 times [2024-11-28 02:25:05,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:05,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670841757] [2024-11-28 02:25:05,407 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:05,431 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:05,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:06,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670841757] [2024-11-28 02:25:06,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670841757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:06,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887066448] [2024-11-28 02:25:06,540 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:06,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:06,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:06,542 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:06,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 02:25:06,723 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:06,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:06,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 02:25:06,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:06,927 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 [2024-11-28 02:25:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:07,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:07,960 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 [2024-11-28 02:25:07,964 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 [2024-11-28 02:25:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:07,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887066448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:07,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:07,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 53 [2024-11-28 02:25:07,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227292065] [2024-11-28 02:25:07,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:07,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 02:25:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:07,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 02:25:07,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2793, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:25:09,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:25:09,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 108 transitions, 953 flow. Second operand has 55 states, 55 states have (on average 10.690909090909091) internal successors, (588), 55 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:09,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:09,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:25:09,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:14,889 INFO L124 PetriNetUnfolderBase]: 4041/6904 cut-off events. [2024-11-28 02:25:14,889 INFO L125 PetriNetUnfolderBase]: For 42683/42934 co-relation queries the response was YES. [2024-11-28 02:25:14,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33779 conditions, 6904 events. 4041/6904 cut-off events. For 42683/42934 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 43082 event pairs, 566 based on Foata normal form. 103/6970 useless extension candidates. Maximal degree in co-relation 33753. Up to 1053 conditions per place. [2024-11-28 02:25:14,925 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 738 selfloop transitions, 56 changer transitions 7/818 dead transitions. [2024-11-28 02:25:14,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 818 transitions, 8956 flow [2024-11-28 02:25:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 02:25:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-28 02:25:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 746 transitions. [2024-11-28 02:25:14,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3450508788159112 [2024-11-28 02:25:14,928 INFO L175 Difference]: Start difference. First operand has 173 places, 108 transitions, 953 flow. Second operand 47 states and 746 transitions. [2024-11-28 02:25:14,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 818 transitions, 8956 flow [2024-11-28 02:25:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 818 transitions, 8776 flow, removed 8 selfloop flow, removed 27 redundant places. [2024-11-28 02:25:14,970 INFO L231 Difference]: Finished difference. Result has 196 places, 128 transitions, 1136 flow [2024-11-28 02:25:14,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1136, PETRI_PLACES=196, PETRI_TRANSITIONS=128} [2024-11-28 02:25:14,971 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2024-11-28 02:25:14,971 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 128 transitions, 1136 flow [2024-11-28 02:25:14,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 10.690909090909091) internal successors, (588), 55 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:14,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:14,972 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:14,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 02:25:15,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:15,172 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1892440470, now seen corresponding path program 2 times [2024-11-28 02:25:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024759513] [2024-11-28 02:25:15,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:15,186 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:15,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 02:25:15,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:15,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024759513] [2024-11-28 02:25:15,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024759513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393123205] [2024-11-28 02:25:15,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:15,239 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 02:25:15,431 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:15,431 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:15,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:25:15,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 02:25:15,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 02:25:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393123205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:15,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 02:25:15,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287431941] [2024-11-28 02:25:15,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:15,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:25:15,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:15,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:25:15,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:25:15,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-28 02:25:15,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 128 transitions, 1136 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:15,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:15,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-28 02:25:15,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:16,375 INFO L124 PetriNetUnfolderBase]: 3514/6129 cut-off events. [2024-11-28 02:25:16,376 INFO L125 PetriNetUnfolderBase]: For 36324/36537 co-relation queries the response was YES. [2024-11-28 02:25:16,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29500 conditions, 6129 events. 3514/6129 cut-off events. For 36324/36537 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 37853 event pairs, 695 based on Foata normal form. 142/6241 useless extension candidates. Maximal degree in co-relation 29472. Up to 2774 conditions per place. [2024-11-28 02:25:16,418 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 164 selfloop transitions, 29 changer transitions 0/210 dead transitions. [2024-11-28 02:25:16,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 210 transitions, 2288 flow [2024-11-28 02:25:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:25:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:25:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-28 02:25:16,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217391304347826 [2024-11-28 02:25:16,419 INFO L175 Difference]: Start difference. First operand has 196 places, 128 transitions, 1136 flow. Second operand 5 states and 97 transitions. [2024-11-28 02:25:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 210 transitions, 2288 flow [2024-11-28 02:25:16,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 210 transitions, 2177 flow, removed 4 selfloop flow, removed 30 redundant places. [2024-11-28 02:25:16,454 INFO L231 Difference]: Finished difference. Result has 170 places, 128 transitions, 1097 flow [2024-11-28 02:25:16,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=170, PETRI_TRANSITIONS=128} [2024-11-28 02:25:16,454 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-11-28 02:25:16,455 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 128 transitions, 1097 flow [2024-11-28 02:25:16,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:16,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:16,455 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:16,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 02:25:16,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:16,655 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:16,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1864145339, now seen corresponding path program 8 times [2024-11-28 02:25:16,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:16,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313484781] [2024-11-28 02:25:16,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:16,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:16,679 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:16,680 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313484781] [2024-11-28 02:25:17,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313484781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475352644] [2024-11-28 02:25:17,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:17,111 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:17,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 02:25:17,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:17,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:17,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:25:17,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:17,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 66 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:18,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475352644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:18,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:18,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 57 [2024-11-28 02:25:18,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066899789] [2024-11-28 02:25:18,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:18,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 02:25:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:18,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 02:25:18,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=2772, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 02:25:18,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:25:18,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 128 transitions, 1097 flow. Second operand has 58 states, 58 states have (on average 10.448275862068966) internal successors, (606), 58 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:18,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:18,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:25:18,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:20,490 INFO L124 PetriNetUnfolderBase]: 3262/5660 cut-off events. [2024-11-28 02:25:20,491 INFO L125 PetriNetUnfolderBase]: For 34772/34985 co-relation queries the response was YES. [2024-11-28 02:25:20,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27673 conditions, 5660 events. 3262/5660 cut-off events. For 34772/34985 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 34175 event pairs, 1605 based on Foata normal form. 32/5649 useless extension candidates. Maximal degree in co-relation 27648. Up to 3227 conditions per place. [2024-11-28 02:25:20,511 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 58 selfloop transitions, 14 changer transitions 274/356 dead transitions. [2024-11-28 02:25:20,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 356 transitions, 3726 flow [2024-11-28 02:25:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:25:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:25:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 367 transitions. [2024-11-28 02:25:20,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3068561872909699 [2024-11-28 02:25:20,513 INFO L175 Difference]: Start difference. First operand has 170 places, 128 transitions, 1097 flow. Second operand 26 states and 367 transitions. [2024-11-28 02:25:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 356 transitions, 3726 flow [2024-11-28 02:25:20,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 356 transitions, 3664 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-28 02:25:20,539 INFO L231 Difference]: Finished difference. Result has 188 places, 82 transitions, 670 flow [2024-11-28 02:25:20,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=670, PETRI_PLACES=188, PETRI_TRANSITIONS=82} [2024-11-28 02:25:20,539 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 142 predicate places. [2024-11-28 02:25:20,539 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 82 transitions, 670 flow [2024-11-28 02:25:20,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 10.448275862068966) internal successors, (606), 58 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:20,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:20,540 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2024-11-28 02:25:20,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 02:25:20,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 02:25:20,740 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:20,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash -600854225, now seen corresponding path program 7 times [2024-11-28 02:25:20,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:20,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010414864] [2024-11-28 02:25:20,741 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010414864] [2024-11-28 02:25:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010414864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:21,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762616254] [2024-11-28 02:25:21,734 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:21,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:21,736 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:21,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 02:25:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:21,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:25:21,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:22,246 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 [2024-11-28 02:25:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:22,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:23,547 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 [2024-11-28 02:25:23,554 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 [2024-11-28 02:25:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762616254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:23,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-28 02:25:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191886036] [2024-11-28 02:25:23,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:23,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 02:25:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:23,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 02:25:23,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3714, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:25:24,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:25:24,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 82 transitions, 670 flow. Second operand has 63 states, 63 states have (on average 11.34920634920635) internal successors, (715), 63 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:24,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:24,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:25:24,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:29,947 INFO L124 PetriNetUnfolderBase]: 1927/3727 cut-off events. [2024-11-28 02:25:29,948 INFO L125 PetriNetUnfolderBase]: For 22399/22556 co-relation queries the response was YES. [2024-11-28 02:25:29,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17824 conditions, 3727 events. 1927/3727 cut-off events. For 22399/22556 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21403 event pairs, 243 based on Foata normal form. 36/3712 useless extension candidates. Maximal degree in co-relation 17801. Up to 862 conditions per place. [2024-11-28 02:25:29,973 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 467 selfloop transitions, 41 changer transitions 0/520 dead transitions. [2024-11-28 02:25:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 520 transitions, 5729 flow [2024-11-28 02:25:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:25:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 02:25:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 562 transitions. [2024-11-28 02:25:29,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3593350383631714 [2024-11-28 02:25:29,975 INFO L175 Difference]: Start difference. First operand has 188 places, 82 transitions, 670 flow. Second operand 34 states and 562 transitions. [2024-11-28 02:25:29,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 520 transitions, 5729 flow [2024-11-28 02:25:30,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 520 transitions, 5647 flow, removed 29 selfloop flow, removed 17 redundant places. [2024-11-28 02:25:30,004 INFO L231 Difference]: Finished difference. Result has 162 places, 87 transitions, 792 flow [2024-11-28 02:25:30,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=792, PETRI_PLACES=162, PETRI_TRANSITIONS=87} [2024-11-28 02:25:30,005 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2024-11-28 02:25:30,005 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 87 transitions, 792 flow [2024-11-28 02:25:30,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 11.34920634920635) internal successors, (715), 63 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:30,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:30,006 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2024-11-28 02:25:30,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 02:25:30,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 02:25:30,206 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:30,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -600854224, now seen corresponding path program 7 times [2024-11-28 02:25:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420120122] [2024-11-28 02:25:30,207 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:31,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420120122] [2024-11-28 02:25:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420120122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:31,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005381077] [2024-11-28 02:25:31,292 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:31,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:31,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:31,294 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:31,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 02:25:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:31,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:25:31,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:31,851 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 [2024-11-28 02:25:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:32,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:33,169 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 [2024-11-28 02:25:33,171 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 [2024-11-28 02:25:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005381077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:33,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-28 02:25:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648242976] [2024-11-28 02:25:33,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:33,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 02:25:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:33,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 02:25:33,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:25:34,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:25:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 87 transitions, 792 flow. Second operand has 63 states, 63 states have (on average 11.34920634920635) internal successors, (715), 63 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:34,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:34,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:25:34,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:38,836 INFO L124 PetriNetUnfolderBase]: 1866/3626 cut-off events. [2024-11-28 02:25:38,836 INFO L125 PetriNetUnfolderBase]: For 25470/25617 co-relation queries the response was YES. [2024-11-28 02:25:38,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18008 conditions, 3626 events. 1866/3626 cut-off events. For 25470/25617 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20800 event pairs, 212 based on Foata normal form. 36/3618 useless extension candidates. Maximal degree in co-relation 17987. Up to 862 conditions per place. [2024-11-28 02:25:38,861 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 466 selfloop transitions, 41 changer transitions 0/519 dead transitions. [2024-11-28 02:25:38,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 519 transitions, 5744 flow [2024-11-28 02:25:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:25:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 02:25:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 561 transitions. [2024-11-28 02:25:38,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.358695652173913 [2024-11-28 02:25:38,864 INFO L175 Difference]: Start difference. First operand has 162 places, 87 transitions, 792 flow. Second operand 34 states and 561 transitions. [2024-11-28 02:25:38,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 519 transitions, 5744 flow [2024-11-28 02:25:38,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 519 transitions, 5610 flow, removed 6 selfloop flow, removed 33 redundant places. [2024-11-28 02:25:38,908 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 728 flow [2024-11-28 02:25:38,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=728, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2024-11-28 02:25:38,908 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2024-11-28 02:25:38,908 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 728 flow [2024-11-28 02:25:38,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 11.34920634920635) internal successors, (715), 63 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:38,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:38,909 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:38,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 02:25:39,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 02:25:39,109 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:39,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:39,110 INFO L85 PathProgramCache]: Analyzing trace with hash -781845503, now seen corresponding path program 9 times [2024-11-28 02:25:39,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:39,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780828148] [2024-11-28 02:25:39,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:39,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:39,145 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:25:39,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 57 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:41,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780828148] [2024-11-28 02:25:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780828148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256044923] [2024-11-28 02:25:41,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:41,081 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:41,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 02:25:41,336 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:25:41,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:41,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 02:25:41,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:41,655 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 [2024-11-28 02:25:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:42,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:43,252 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 [2024-11-28 02:25:43,256 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 [2024-11-28 02:25:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256044923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:43,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:43,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 63 [2024-11-28 02:25:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993858276] [2024-11-28 02:25:43,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:43,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 02:25:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:43,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 02:25:43,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3936, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 02:25:45,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:25:45,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 728 flow. Second operand has 65 states, 65 states have (on average 10.676923076923076) internal successors, (694), 65 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:45,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:45,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:25:45,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:25:53,894 INFO L124 PetriNetUnfolderBase]: 5114/8529 cut-off events. [2024-11-28 02:25:53,894 INFO L125 PetriNetUnfolderBase]: For 57427/57812 co-relation queries the response was YES. [2024-11-28 02:25:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42592 conditions, 8529 events. 5114/8529 cut-off events. For 57427/57812 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 52808 event pairs, 454 based on Foata normal form. 120/8605 useless extension candidates. Maximal degree in co-relation 42572. Up to 1263 conditions per place. [2024-11-28 02:25:53,940 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1074 selfloop transitions, 72 changer transitions 0/1157 dead transitions. [2024-11-28 02:25:53,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1157 transitions, 14157 flow [2024-11-28 02:25:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:25:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-28 02:25:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 929 transitions. [2024-11-28 02:25:53,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3606366459627329 [2024-11-28 02:25:53,942 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 728 flow. Second operand 56 states and 929 transitions. [2024-11-28 02:25:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1157 transitions, 14157 flow [2024-11-28 02:25:53,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1157 transitions, 12915 flow, removed 0 selfloop flow, removed 31 redundant places. [2024-11-28 02:25:53,988 INFO L231 Difference]: Finished difference. Result has 194 places, 124 transitions, 1195 flow [2024-11-28 02:25:53,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1195, PETRI_PLACES=194, PETRI_TRANSITIONS=124} [2024-11-28 02:25:53,989 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 148 predicate places. [2024-11-28 02:25:53,989 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 124 transitions, 1195 flow [2024-11-28 02:25:53,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 10.676923076923076) internal successors, (694), 65 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:53,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:25:53,990 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:54,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 02:25:54,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 02:25:54,191 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:25:54,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash -781845504, now seen corresponding path program 5 times [2024-11-28 02:25:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826977776] [2024-11-28 02:25:54,192 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:25:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:54,242 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 02:25:54,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:55,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826977776] [2024-11-28 02:25:55,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826977776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848422214] [2024-11-28 02:25:55,128 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:25:55,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:55,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:55,131 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:55,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 02:25:55,374 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 02:25:55,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:55,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 02:25:55,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:55,804 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 15 treesize of output 1 [2024-11-28 02:25:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:56,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:57,214 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 [2024-11-28 02:25:57,216 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 [2024-11-28 02:25:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848422214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:57,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-28 02:25:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761637414] [2024-11-28 02:25:57,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:57,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 02:25:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:57,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 02:25:57,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3700, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:25:58,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:25:58,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 124 transitions, 1195 flow. Second operand has 63 states, 63 states have (on average 11.444444444444445) internal successors, (721), 63 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:58,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:25:58,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:25:58,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:02,982 INFO L124 PetriNetUnfolderBase]: 4006/7333 cut-off events. [2024-11-28 02:26:02,982 INFO L125 PetriNetUnfolderBase]: For 50890/51179 co-relation queries the response was YES. [2024-11-28 02:26:03,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38245 conditions, 7333 events. 4006/7333 cut-off events. For 50890/51179 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 47425 event pairs, 509 based on Foata normal form. 81/7359 useless extension candidates. Maximal degree in co-relation 38217. Up to 1621 conditions per place. [2024-11-28 02:26:03,033 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 510 selfloop transitions, 68 changer transitions 0/593 dead transitions. [2024-11-28 02:26:03,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 593 transitions, 6756 flow [2024-11-28 02:26:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:26:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 02:26:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 543 transitions. [2024-11-28 02:26:03,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34718670076726343 [2024-11-28 02:26:03,035 INFO L175 Difference]: Start difference. First operand has 194 places, 124 transitions, 1195 flow. Second operand 34 states and 543 transitions. [2024-11-28 02:26:03,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 593 transitions, 6756 flow [2024-11-28 02:26:03,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 593 transitions, 6579 flow, removed 30 selfloop flow, removed 29 redundant places. [2024-11-28 02:26:03,106 INFO L231 Difference]: Finished difference. Result has 200 places, 125 transitions, 1200 flow [2024-11-28 02:26:03,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1200, PETRI_PLACES=200, PETRI_TRANSITIONS=125} [2024-11-28 02:26:03,107 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 154 predicate places. [2024-11-28 02:26:03,107 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 125 transitions, 1200 flow [2024-11-28 02:26:03,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 11.444444444444445) internal successors, (721), 63 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:03,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:03,107 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-28 02:26:03,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 02:26:03,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 02:26:03,308 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:26:03,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash -319134213, now seen corresponding path program 8 times [2024-11-28 02:26:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:03,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099213062] [2024-11-28 02:26:03,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:03,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:03,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:03,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099213062] [2024-11-28 02:26:03,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099213062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:03,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986254630] [2024-11-28 02:26:03,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:03,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:03,919 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:03,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 02:26:04,136 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:04,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:04,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:26:04,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:04,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986254630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:05,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 67 [2024-11-28 02:26:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241179021] [2024-11-28 02:26:05,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:05,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 02:26:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:05,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 02:26:05,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3841, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:26:05,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:26:05,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 125 transitions, 1200 flow. Second operand has 68 states, 68 states have (on average 10.411764705882353) internal successors, (708), 68 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:05,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:05,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:26:05,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:08,499 INFO L124 PetriNetUnfolderBase]: 4639/8119 cut-off events. [2024-11-28 02:26:08,499 INFO L125 PetriNetUnfolderBase]: For 63556/63820 co-relation queries the response was YES. [2024-11-28 02:26:08,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41898 conditions, 8119 events. 4639/8119 cut-off events. For 63556/63820 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 50539 event pairs, 2102 based on Foata normal form. 81/8081 useless extension candidates. Maximal degree in co-relation 41869. Up to 4027 conditions per place. [2024-11-28 02:26:08,551 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 348 selfloop transitions, 37 changer transitions 98/504 dead transitions. [2024-11-28 02:26:08,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 504 transitions, 6312 flow [2024-11-28 02:26:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:26:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 02:26:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 455 transitions. [2024-11-28 02:26:08,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32971014492753625 [2024-11-28 02:26:08,552 INFO L175 Difference]: Start difference. First operand has 200 places, 125 transitions, 1200 flow. Second operand 30 states and 455 transitions. [2024-11-28 02:26:08,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 504 transitions, 6312 flow [2024-11-28 02:26:08,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 504 transitions, 5354 flow, removed 30 selfloop flow, removed 34 redundant places. [2024-11-28 02:26:08,668 INFO L231 Difference]: Finished difference. Result has 210 places, 139 transitions, 1309 flow [2024-11-28 02:26:08,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1309, PETRI_PLACES=210, PETRI_TRANSITIONS=139} [2024-11-28 02:26:08,669 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2024-11-28 02:26:08,669 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 139 transitions, 1309 flow [2024-11-28 02:26:08,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 10.411764705882353) internal successors, (708), 68 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:08,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:08,669 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:08,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 02:26:08,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 02:26:08,870 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:26:08,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1973527064, now seen corresponding path program 6 times [2024-11-28 02:26:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864713298] [2024-11-28 02:26:08,870 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:26:08,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:08,905 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:26:08,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:09,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864713298] [2024-11-28 02:26:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864713298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:09,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122893264] [2024-11-28 02:26:09,556 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:26:09,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:09,558 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 02:26:09,815 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:26:09,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:09,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:26:09,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:10,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122893264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:11,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:11,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 67 [2024-11-28 02:26:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111140506] [2024-11-28 02:26:11,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:11,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 02:26:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:11,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 02:26:11,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3841, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:26:11,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:26:11,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 139 transitions, 1309 flow. Second operand has 68 states, 68 states have (on average 10.441176470588236) internal successors, (710), 68 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:11,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:11,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:26:11,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:13,652 INFO L124 PetriNetUnfolderBase]: 4089/7005 cut-off events. [2024-11-28 02:26:13,652 INFO L125 PetriNetUnfolderBase]: For 50144/50805 co-relation queries the response was YES. [2024-11-28 02:26:13,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35712 conditions, 7005 events. 4089/7005 cut-off events. For 50144/50805 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 43004 event pairs, 1942 based on Foata normal form. 328/7286 useless extension candidates. Maximal degree in co-relation 35673. Up to 3987 conditions per place. [2024-11-28 02:26:13,698 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 66 selfloop transitions, 16 changer transitions 345/438 dead transitions. [2024-11-28 02:26:13,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 438 transitions, 5421 flow [2024-11-28 02:26:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:26:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 02:26:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 421 transitions. [2024-11-28 02:26:13,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3050724637681159 [2024-11-28 02:26:13,700 INFO L175 Difference]: Start difference. First operand has 210 places, 139 transitions, 1309 flow. Second operand 30 states and 421 transitions. [2024-11-28 02:26:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 438 transitions, 5421 flow [2024-11-28 02:26:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 438 transitions, 5294 flow, removed 46 selfloop flow, removed 16 redundant places. [2024-11-28 02:26:13,759 INFO L231 Difference]: Finished difference. Result has 221 places, 93 transitions, 814 flow [2024-11-28 02:26:13,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=814, PETRI_PLACES=221, PETRI_TRANSITIONS=93} [2024-11-28 02:26:13,759 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 175 predicate places. [2024-11-28 02:26:13,759 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 93 transitions, 814 flow [2024-11-28 02:26:13,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 10.441176470588236) internal successors, (710), 68 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:13,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:13,760 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-28 02:26:13,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:13,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:13,960 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:26:13,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1311144896, now seen corresponding path program 8 times [2024-11-28 02:26:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513106325] [2024-11-28 02:26:13,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:13,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:13,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 83 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513106325] [2024-11-28 02:26:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513106325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968569165] [2024-11-28 02:26:15,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:15,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:15,305 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:15,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 02:26:15,538 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:15,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:15,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 02:26:15,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:15,903 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 [2024-11-28 02:26:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:16,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:17,704 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 [2024-11-28 02:26:17,707 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 [2024-11-28 02:26:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968569165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:17,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:17,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 73 [2024-11-28 02:26:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413988548] [2024-11-28 02:26:17,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:17,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 02:26:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:17,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 02:26:17,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5277, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 02:26:19,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:26:19,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 93 transitions, 814 flow. Second operand has 75 states, 75 states have (on average 10.586666666666666) internal successors, (794), 75 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:19,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:19,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:26:19,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:29,614 INFO L124 PetriNetUnfolderBase]: 5817/10107 cut-off events. [2024-11-28 02:26:29,614 INFO L125 PetriNetUnfolderBase]: For 59005/59381 co-relation queries the response was YES. [2024-11-28 02:26:29,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51075 conditions, 10107 events. 5817/10107 cut-off events. For 59005/59381 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 64451 event pairs, 427 based on Foata normal form. 126/10154 useless extension candidates. Maximal degree in co-relation 51038. Up to 1489 conditions per place. [2024-11-28 02:26:29,897 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1276 selfloop transitions, 82 changer transitions 0/1370 dead transitions. [2024-11-28 02:26:29,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1370 transitions, 15499 flow [2024-11-28 02:26:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 02:26:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-11-28 02:26:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1105 transitions. [2024-11-28 02:26:29,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37533967391304346 [2024-11-28 02:26:29,900 INFO L175 Difference]: Start difference. First operand has 221 places, 93 transitions, 814 flow. Second operand 64 states and 1105 transitions. [2024-11-28 02:26:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1370 transitions, 15499 flow [2024-11-28 02:26:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1370 transitions, 15016 flow, removed 62 selfloop flow, removed 34 redundant places. [2024-11-28 02:26:30,086 INFO L231 Difference]: Finished difference. Result has 210 places, 134 transitions, 1315 flow [2024-11-28 02:26:30,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=1315, PETRI_PLACES=210, PETRI_TRANSITIONS=134} [2024-11-28 02:26:30,086 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2024-11-28 02:26:30,086 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 134 transitions, 1315 flow [2024-11-28 02:26:30,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 10.586666666666666) internal successors, (794), 75 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:30,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:30,087 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-28 02:26:30,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:30,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:30,287 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:26:30,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1311144897, now seen corresponding path program 9 times [2024-11-28 02:26:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919170457] [2024-11-28 02:26:30,288 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:30,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:26:30,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 83 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919170457] [2024-11-28 02:26:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919170457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370869768] [2024-11-28 02:26:31,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:31,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:31,594 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:31,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 02:26:31,923 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:26:31,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:31,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 02:26:31,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:32,276 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 [2024-11-28 02:26:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:33,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:33,890 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 [2024-11-28 02:26:33,892 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 [2024-11-28 02:26:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370869768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:33,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 73 [2024-11-28 02:26:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949094020] [2024-11-28 02:26:33,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:33,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 02:26:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:33,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 02:26:33,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5277, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 02:26:35,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:26:35,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 134 transitions, 1315 flow. Second operand has 75 states, 75 states have (on average 10.586666666666666) internal successors, (794), 75 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:35,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:35,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:26:35,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:45,444 INFO L124 PetriNetUnfolderBase]: 5607/9771 cut-off events. [2024-11-28 02:26:45,445 INFO L125 PetriNetUnfolderBase]: For 60940/61298 co-relation queries the response was YES. [2024-11-28 02:26:45,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49455 conditions, 9771 events. 5607/9771 cut-off events. For 60940/61298 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 62048 event pairs, 427 based on Foata normal form. 126/9818 useless extension candidates. Maximal degree in co-relation 49429. Up to 1429 conditions per place. [2024-11-28 02:26:45,525 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1105 selfloop transitions, 82 changer transitions 168/1367 dead transitions. [2024-11-28 02:26:45,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1367 transitions, 15205 flow [2024-11-28 02:26:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 02:26:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-11-28 02:26:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1102 transitions. [2024-11-28 02:26:45,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.374320652173913 [2024-11-28 02:26:45,527 INFO L175 Difference]: Start difference. First operand has 210 places, 134 transitions, 1315 flow. Second operand 64 states and 1102 transitions. [2024-11-28 02:26:45,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1367 transitions, 15205 flow [2024-11-28 02:26:45,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1367 transitions, 14966 flow, removed 27 selfloop flow, removed 38 redundant places. [2024-11-28 02:26:45,645 INFO L231 Difference]: Finished difference. Result has 235 places, 133 transitions, 1233 flow [2024-11-28 02:26:45,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=1233, PETRI_PLACES=235, PETRI_TRANSITIONS=133} [2024-11-28 02:26:45,645 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 189 predicate places. [2024-11-28 02:26:45,645 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 133 transitions, 1233 flow [2024-11-28 02:26:45,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 10.586666666666666) internal successors, (794), 75 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:45,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:45,646 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:45,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:45,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:45,846 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:26:45,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1008688735, now seen corresponding path program 10 times [2024-11-28 02:26:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595351857] [2024-11-28 02:26:45,847 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:26:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:45,871 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:26:45,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 83 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595351857] [2024-11-28 02:26:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595351857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574061278] [2024-11-28 02:26:47,111 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:26:47,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:47,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:47,113 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:47,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 02:26:47,343 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:26:47,343 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:47,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 02:26:47,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:47,706 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 [2024-11-28 02:26:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:48,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:49,384 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 [2024-11-28 02:26:49,386 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 [2024-11-28 02:26:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574061278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:49,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 73 [2024-11-28 02:26:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635339794] [2024-11-28 02:26:49,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:49,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 02:26:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:49,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 02:26:49,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5279, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 02:26:51,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:26:51,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 133 transitions, 1233 flow. Second operand has 75 states, 75 states have (on average 10.666666666666666) internal successors, (800), 75 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:51,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:51,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:26:51,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:27:01,688 INFO L124 PetriNetUnfolderBase]: 6345/10637 cut-off events. [2024-11-28 02:27:01,688 INFO L125 PetriNetUnfolderBase]: For 73681/73988 co-relation queries the response was YES. [2024-11-28 02:27:01,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54414 conditions, 10637 events. 6345/10637 cut-off events. For 73681/73988 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 67845 event pairs, 698 based on Foata normal form. 127/10715 useless extension candidates. Maximal degree in co-relation 54392. Up to 1592 conditions per place. [2024-11-28 02:27:01,760 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1268 selfloop transitions, 74 changer transitions 9/1373 dead transitions. [2024-11-28 02:27:01,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1373 transitions, 17264 flow [2024-11-28 02:27:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 02:27:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-28 02:27:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 996 transitions. [2024-11-28 02:27:01,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34368530020703936 [2024-11-28 02:27:01,763 INFO L175 Difference]: Start difference. First operand has 235 places, 133 transitions, 1233 flow. Second operand 63 states and 996 transitions. [2024-11-28 02:27:01,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1373 transitions, 17264 flow [2024-11-28 02:27:01,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 1373 transitions, 14969 flow, removed 63 selfloop flow, removed 64 redundant places. [2024-11-28 02:27:01,818 INFO L231 Difference]: Finished difference. Result has 238 places, 162 transitions, 1505 flow [2024-11-28 02:27:01,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1505, PETRI_PLACES=238, PETRI_TRANSITIONS=162} [2024-11-28 02:27:01,819 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 192 predicate places. [2024-11-28 02:27:01,819 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 162 transitions, 1505 flow [2024-11-28 02:27:01,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 10.666666666666666) internal successors, (800), 75 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:01,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:27:01,819 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:01,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 02:27:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-28 02:27:02,020 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:27:02,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:02,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1008688734, now seen corresponding path program 7 times [2024-11-28 02:27:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132434807] [2024-11-28 02:27:02,020 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:27:02,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132434807] [2024-11-28 02:27:03,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132434807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058313733] [2024-11-28 02:27:03,098 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:27:03,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:03,099 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:03,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 02:27:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:03,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 02:27:03,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:03,732 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 [2024-11-28 02:27:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:04,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:05,366 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 [2024-11-28 02:27:05,368 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 [2024-11-28 02:27:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058313733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:05,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 71 [2024-11-28 02:27:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586358082] [2024-11-28 02:27:05,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:05,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 02:27:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:05,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 02:27:05,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=5034, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 02:27:06,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:27:06,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 162 transitions, 1505 flow. Second operand has 73 states, 73 states have (on average 11.424657534246576) internal successors, (834), 73 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:06,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:27:06,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:27:06,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:27:14,486 INFO L124 PetriNetUnfolderBase]: 4572/8669 cut-off events. [2024-11-28 02:27:14,486 INFO L125 PetriNetUnfolderBase]: For 60185/60420 co-relation queries the response was YES. [2024-11-28 02:27:14,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43281 conditions, 8669 events. 4572/8669 cut-off events. For 60185/60420 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 59218 event pairs, 568 based on Foata normal form. 93/8697 useless extension candidates. Maximal degree in co-relation 43257. Up to 1535 conditions per place. [2024-11-28 02:27:14,543 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1137 selfloop transitions, 71 changer transitions 0/1233 dead transitions. [2024-11-28 02:27:14,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1233 transitions, 13962 flow [2024-11-28 02:27:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 02:27:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-28 02:27:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 623 transitions. [2024-11-28 02:27:14,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3472686733556299 [2024-11-28 02:27:14,545 INFO L175 Difference]: Start difference. First operand has 238 places, 162 transitions, 1505 flow. Second operand 39 states and 623 transitions. [2024-11-28 02:27:14,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1233 transitions, 13962 flow [2024-11-28 02:27:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1233 transitions, 13744 flow, removed 8 selfloop flow, removed 38 redundant places. [2024-11-28 02:27:14,639 INFO L231 Difference]: Finished difference. Result has 240 places, 163 transitions, 1471 flow [2024-11-28 02:27:14,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1471, PETRI_PLACES=240, PETRI_TRANSITIONS=163} [2024-11-28 02:27:14,639 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 194 predicate places. [2024-11-28 02:27:14,640 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 163 transitions, 1471 flow [2024-11-28 02:27:14,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 11.424657534246576) internal successors, (834), 73 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:14,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:27:14,640 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:14,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-28 02:27:14,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-28 02:27:14,841 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:27:14,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1310913926, now seen corresponding path program 8 times [2024-11-28 02:27:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284743556] [2024-11-28 02:27:14,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:27:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:14,869 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:27:14,870 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284743556] [2024-11-28 02:27:15,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284743556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:15,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946101978] [2024-11-28 02:27:15,495 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:27:15,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:15,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:15,496 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:15,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 02:27:15,744 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:27:15,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:15,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:27:15,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:16,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946101978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:17,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:17,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 77 [2024-11-28 02:27:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023780858] [2024-11-28 02:27:17,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:17,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 02:27:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:17,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 02:27:17,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=922, Invalid=5084, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 02:27:17,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:27:17,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 163 transitions, 1471 flow. Second operand has 78 states, 78 states have (on average 10.435897435897436) internal successors, (814), 78 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:17,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:27:17,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:27:17,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:27:20,353 INFO L124 PetriNetUnfolderBase]: 5452/9294 cut-off events. [2024-11-28 02:27:20,353 INFO L125 PetriNetUnfolderBase]: For 54855/55138 co-relation queries the response was YES. [2024-11-28 02:27:20,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45902 conditions, 9294 events. 5452/9294 cut-off events. For 54855/55138 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 58897 event pairs, 2550 based on Foata normal form. 40/9277 useless extension candidates. Maximal degree in co-relation 45878. Up to 5156 conditions per place. [2024-11-28 02:27:20,419 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 72 selfloop transitions, 18 changer transitions 460/563 dead transitions. [2024-11-28 02:27:20,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 563 transitions, 5984 flow [2024-11-28 02:27:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:27:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 02:27:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 475 transitions. [2024-11-28 02:27:20,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3037084398976982 [2024-11-28 02:27:20,421 INFO L175 Difference]: Start difference. First operand has 240 places, 163 transitions, 1471 flow. Second operand 34 states and 475 transitions. [2024-11-28 02:27:20,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 563 transitions, 5984 flow [2024-11-28 02:27:20,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 563 transitions, 5853 flow, removed 2 selfloop flow, removed 38 redundant places. [2024-11-28 02:27:20,509 INFO L231 Difference]: Finished difference. Result has 234 places, 103 transitions, 872 flow [2024-11-28 02:27:20,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=872, PETRI_PLACES=234, PETRI_TRANSITIONS=103} [2024-11-28 02:27:20,510 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 188 predicate places. [2024-11-28 02:27:20,510 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 103 transitions, 872 flow [2024-11-28 02:27:20,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 10.435897435897436) internal successors, (814), 78 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:27:20,510 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2024-11-28 02:27:20,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 02:27:20,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-28 02:27:20,711 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:27:20,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1370128945, now seen corresponding path program 9 times [2024-11-28 02:27:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021868120] [2024-11-28 02:27:20,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:27:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:20,762 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:27:20,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021868120] [2024-11-28 02:27:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021868120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469406624] [2024-11-28 02:27:22,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:27:22,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:22,113 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:22,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 02:27:22,613 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:27:22,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:22,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 02:27:22,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:23,145 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 [2024-11-28 02:27:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:24,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:25,385 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 [2024-11-28 02:27:25,388 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 [2024-11-28 02:27:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469406624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:25,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:25,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 83 [2024-11-28 02:27:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268432294] [2024-11-28 02:27:25,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:25,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 02:27:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:25,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 02:27:25,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=6814, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 02:27:27,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:27:27,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 103 transitions, 872 flow. Second operand has 85 states, 85 states have (on average 10.588235294117647) internal successors, (900), 85 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:27,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:27:27,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:27:27,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:27:40,661 INFO L124 PetriNetUnfolderBase]: 7245/12576 cut-off events. [2024-11-28 02:27:40,661 INFO L125 PetriNetUnfolderBase]: For 78218/78774 co-relation queries the response was YES. [2024-11-28 02:27:40,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61499 conditions, 12576 events. 7245/12576 cut-off events. For 78218/78774 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 82299 event pairs, 511 based on Foata normal form. 138/12641 useless extension candidates. Maximal degree in co-relation 61477. Up to 1835 conditions per place. [2024-11-28 02:27:40,749 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1596 selfloop transitions, 92 changer transitions 0/1700 dead transitions. [2024-11-28 02:27:40,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1700 transitions, 19766 flow [2024-11-28 02:27:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 02:27:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-28 02:27:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 1243 transitions. [2024-11-28 02:27:40,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37530193236714976 [2024-11-28 02:27:40,753 INFO L175 Difference]: Start difference. First operand has 234 places, 103 transitions, 872 flow. Second operand 72 states and 1243 transitions. [2024-11-28 02:27:40,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1700 transitions, 19766 flow [2024-11-28 02:27:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 1700 transitions, 19382 flow, removed 176 selfloop flow, removed 19 redundant places. [2024-11-28 02:27:40,845 INFO L231 Difference]: Finished difference. Result has 231 places, 146 transitions, 1452 flow [2024-11-28 02:27:40,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=1452, PETRI_PLACES=231, PETRI_TRANSITIONS=146} [2024-11-28 02:27:40,845 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 185 predicate places. [2024-11-28 02:27:40,845 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 146 transitions, 1452 flow [2024-11-28 02:27:40,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 10.588235294117647) internal successors, (900), 85 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:40,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:27:40,846 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2024-11-28 02:27:40,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 02:27:41,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:41,047 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:27:41,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1370128944, now seen corresponding path program 10 times [2024-11-28 02:27:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742755713] [2024-11-28 02:27:41,047 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:27:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:41,094 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:27:41,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742755713] [2024-11-28 02:27:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742755713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679905836] [2024-11-28 02:27:42,663 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:27:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:42,665 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:42,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 02:27:42,961 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:27:42,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:42,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-28 02:27:42,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:43,510 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 [2024-11-28 02:27:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:44,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:45,891 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 [2024-11-28 02:27:45,894 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 [2024-11-28 02:27:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679905836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:45,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:45,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 83 [2024-11-28 02:27:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422468335] [2024-11-28 02:27:45,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:45,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 02:27:45,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:45,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 02:27:45,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=6816, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 02:27:48,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:27:48,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 146 transitions, 1452 flow. Second operand has 85 states, 85 states have (on average 10.588235294117647) internal successors, (900), 85 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:48,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:27:48,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:27:48,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:03,396 INFO L124 PetriNetUnfolderBase]: 7194/12652 cut-off events. [2024-11-28 02:28:03,396 INFO L125 PetriNetUnfolderBase]: For 84032/84443 co-relation queries the response was YES. [2024-11-28 02:28:03,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64326 conditions, 12652 events. 7194/12652 cut-off events. For 84032/84443 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 84122 event pairs, 672 based on Foata normal form. 138/12696 useless extension candidates. Maximal degree in co-relation 64301. Up to 1838 conditions per place. [2024-11-28 02:28:03,515 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1347 selfloop transitions, 92 changer transitions 216/1667 dead transitions. [2024-11-28 02:28:03,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1667 transitions, 19246 flow [2024-11-28 02:28:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 02:28:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-28 02:28:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1222 transitions. [2024-11-28 02:28:03,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3741579914268218 [2024-11-28 02:28:03,518 INFO L175 Difference]: Start difference. First operand has 231 places, 146 transitions, 1452 flow. Second operand 71 states and 1222 transitions. [2024-11-28 02:28:03,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1667 transitions, 19246 flow [2024-11-28 02:28:03,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1667 transitions, 18960 flow, removed 13 selfloop flow, removed 44 redundant places. [2024-11-28 02:28:03,666 INFO L231 Difference]: Finished difference. Result has 257 places, 145 transitions, 1347 flow [2024-11-28 02:28:03,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=1347, PETRI_PLACES=257, PETRI_TRANSITIONS=145} [2024-11-28 02:28:03,667 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 211 predicate places. [2024-11-28 02:28:03,667 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 145 transitions, 1347 flow [2024-11-28 02:28:03,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 10.588235294117647) internal successors, (900), 85 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:03,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:03,667 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:03,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 02:28:03,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 02:28:03,868 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:28:03,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2006261952, now seen corresponding path program 9 times [2024-11-28 02:28:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575370880] [2024-11-28 02:28:03,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:28:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:03,926 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:28:03,926 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 114 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575370880] [2024-11-28 02:28:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575370880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428901156] [2024-11-28 02:28:05,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:28:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:05,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:05,422 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:05,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 02:28:06,020 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:28:06,020 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:06,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 02:28:06,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:06,527 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 [2024-11-28 02:28:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:07,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:08,678 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 [2024-11-28 02:28:08,681 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 [2024-11-28 02:28:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428901156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:08,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 83 [2024-11-28 02:28:08,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476947382] [2024-11-28 02:28:08,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:08,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 02:28:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:08,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 02:28:08,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=6814, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 02:28:11,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:28:11,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 145 transitions, 1347 flow. Second operand has 85 states, 85 states have (on average 10.658823529411764) internal successors, (906), 85 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:11,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:11,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:28:11,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:24,288 INFO L124 PetriNetUnfolderBase]: 8013/13545 cut-off events. [2024-11-28 02:28:24,289 INFO L125 PetriNetUnfolderBase]: For 86580/87080 co-relation queries the response was YES. [2024-11-28 02:28:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67557 conditions, 13545 events. 8013/13545 cut-off events. For 86580/87080 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 88751 event pairs, 664 based on Foata normal form. 148/13638 useless extension candidates. Maximal degree in co-relation 67534. Up to 2036 conditions per place. [2024-11-28 02:28:24,377 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1641 selfloop transitions, 83 changer transitions 19/1766 dead transitions. [2024-11-28 02:28:24,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1766 transitions, 21668 flow [2024-11-28 02:28:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 02:28:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-28 02:28:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 1141 transitions. [2024-11-28 02:28:24,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34450483091787437 [2024-11-28 02:28:24,380 INFO L175 Difference]: Start difference. First operand has 257 places, 145 transitions, 1347 flow. Second operand 72 states and 1141 transitions. [2024-11-28 02:28:24,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 1766 transitions, 21668 flow [2024-11-28 02:28:24,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1766 transitions, 18677 flow, removed 78 selfloop flow, removed 70 redundant places. [2024-11-28 02:28:24,475 INFO L231 Difference]: Finished difference. Result has 263 places, 179 transitions, 1659 flow [2024-11-28 02:28:24,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=1659, PETRI_PLACES=263, PETRI_TRANSITIONS=179} [2024-11-28 02:28:24,476 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 217 predicate places. [2024-11-28 02:28:24,476 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 179 transitions, 1659 flow [2024-11-28 02:28:24,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 10.658823529411764) internal successors, (906), 85 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:24,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:24,476 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:24,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:24,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 02:28:24,677 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:28:24,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2006261953, now seen corresponding path program 11 times [2024-11-28 02:28:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7315295] [2024-11-28 02:28:24,678 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:28:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:24,728 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 02:28:24,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7315295] [2024-11-28 02:28:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7315295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116272831] [2024-11-28 02:28:25,828 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:28:25,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:25,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:25,830 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:25,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 02:28:26,148 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 02:28:26,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:26,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 02:28:26,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:26,190 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 [2024-11-28 02:28:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:27,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:28,120 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 [2024-11-28 02:28:28,123 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 [2024-11-28 02:28:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116272831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:28,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2024-11-28 02:28:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882300574] [2024-11-28 02:28:28,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:28,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 02:28:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:28,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 02:28:28,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4084, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 02:28:29,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:28:29,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 179 transitions, 1659 flow. Second operand has 66 states, 66 states have (on average 11.454545454545455) internal successors, (756), 66 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:29,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:29,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:28:29,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:37,272 INFO L124 PetriNetUnfolderBase]: 5778/11095 cut-off events. [2024-11-28 02:28:37,272 INFO L125 PetriNetUnfolderBase]: For 73954/74330 co-relation queries the response was YES. [2024-11-28 02:28:37,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53781 conditions, 11095 events. 5778/11095 cut-off events. For 73954/74330 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 78655 event pairs, 731 based on Foata normal form. 105/11160 useless extension candidates. Maximal degree in co-relation 53754. Up to 1890 conditions per place. [2024-11-28 02:28:37,351 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1440 selfloop transitions, 80 changer transitions 0/1546 dead transitions. [2024-11-28 02:28:37,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 1546 transitions, 16847 flow [2024-11-28 02:28:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 02:28:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 02:28:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 703 transitions. [2024-11-28 02:28:37,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3473320158102767 [2024-11-28 02:28:37,353 INFO L175 Difference]: Start difference. First operand has 263 places, 179 transitions, 1659 flow. Second operand 44 states and 703 transitions. [2024-11-28 02:28:37,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 1546 transitions, 16847 flow [2024-11-28 02:28:37,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 1546 transitions, 16632 flow, removed 11 selfloop flow, removed 41 redundant places. [2024-11-28 02:28:37,438 INFO L231 Difference]: Finished difference. Result has 267 places, 180 transitions, 1647 flow [2024-11-28 02:28:37,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1647, PETRI_PLACES=267, PETRI_TRANSITIONS=180} [2024-11-28 02:28:37,438 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 221 predicate places. [2024-11-28 02:28:37,438 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 180 transitions, 1647 flow [2024-11-28 02:28:37,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 11.454545454545455) internal successors, (756), 66 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:37,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:37,439 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:37,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 02:28:37,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 02:28:37,639 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:28:37,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 183203161, now seen corresponding path program 12 times [2024-11-28 02:28:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959064562] [2024-11-28 02:28:37,640 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:28:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:37,695 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 02:28:37,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959064562] [2024-11-28 02:28:38,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959064562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105372989] [2024-11-28 02:28:38,581 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:28:38,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:38,583 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:38,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 02:28:39,307 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 02:28:39,307 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:39,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:28:39,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:40,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:41,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105372989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:41,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:41,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 87 [2024-11-28 02:28:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355943332] [2024-11-28 02:28:41,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:41,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-28 02:28:41,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:41,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-28 02:28:41,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=6501, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 02:28:42,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:28:42,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 180 transitions, 1647 flow. Second operand has 88 states, 88 states have (on average 10.431818181818182) internal successors, (918), 88 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:42,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:42,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:28:42,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:28:45,759 INFO L124 PetriNetUnfolderBase]: 6941/11899 cut-off events. [2024-11-28 02:28:45,759 INFO L125 PetriNetUnfolderBase]: For 68238/68694 co-relation queries the response was YES. [2024-11-28 02:28:45,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57649 conditions, 11899 events. 6941/11899 cut-off events. For 68238/68694 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 78051 event pairs, 3313 based on Foata normal form. 47/11891 useless extension candidates. Maximal degree in co-relation 57622. Up to 6564 conditions per place. [2024-11-28 02:28:45,832 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 80 selfloop transitions, 20 changer transitions 571/684 dead transitions. [2024-11-28 02:28:45,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 684 transitions, 7105 flow [2024-11-28 02:28:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 02:28:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-28 02:28:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 529 transitions. [2024-11-28 02:28:45,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3026315789473684 [2024-11-28 02:28:45,834 INFO L175 Difference]: Start difference. First operand has 267 places, 180 transitions, 1647 flow. Second operand 38 states and 529 transitions. [2024-11-28 02:28:45,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 684 transitions, 7105 flow [2024-11-28 02:28:45,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 684 transitions, 6960 flow, removed 1 selfloop flow, removed 43 redundant places. [2024-11-28 02:28:45,929 INFO L231 Difference]: Finished difference. Result has 260 places, 113 transitions, 966 flow [2024-11-28 02:28:45,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=966, PETRI_PLACES=260, PETRI_TRANSITIONS=113} [2024-11-28 02:28:45,930 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 214 predicate places. [2024-11-28 02:28:45,930 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 113 transitions, 966 flow [2024-11-28 02:28:45,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 10.431818181818182) internal successors, (918), 88 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:45,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:28:45,931 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2024-11-28 02:28:45,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 02:28:46,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:46,132 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:28:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1285601504, now seen corresponding path program 10 times [2024-11-28 02:28:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833965765] [2024-11-28 02:28:46,133 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:28:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:46,179 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:28:46,179 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 115 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833965765] [2024-11-28 02:28:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833965765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402201877] [2024-11-28 02:28:48,462 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:28:48,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:48,464 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:48,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 02:28:48,765 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:28:48,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:48,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 02:28:48,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:49,563 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 [2024-11-28 02:28:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:50,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:52,293 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 [2024-11-28 02:28:52,295 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 [2024-11-28 02:28:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402201877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:52,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 93 [2024-11-28 02:28:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262433379] [2024-11-28 02:28:52,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:52,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 02:28:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:52,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 02:28:52,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=8568, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 02:28:55,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:28:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 113 transitions, 966 flow. Second operand has 95 states, 95 states have (on average 10.589473684210526) internal successors, (1006), 95 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:28:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:28:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:11,117 INFO L124 PetriNetUnfolderBase]: 8806/15604 cut-off events. [2024-11-28 02:29:11,117 INFO L125 PetriNetUnfolderBase]: For 93699/94446 co-relation queries the response was YES. [2024-11-28 02:29:11,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77399 conditions, 15604 events. 8806/15604 cut-off events. For 93699/94446 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 106579 event pairs, 770 based on Foata normal form. 104/15575 useless extension candidates. Maximal degree in co-relation 77374. Up to 2287 conditions per place. [2024-11-28 02:29:11,216 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1851 selfloop transitions, 100 changer transitions 0/1965 dead transitions. [2024-11-28 02:29:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1965 transitions, 23857 flow [2024-11-28 02:29:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-28 02:29:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-11-28 02:29:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 1322 transitions. [2024-11-28 02:29:11,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37323546019198195 [2024-11-28 02:29:11,219 INFO L175 Difference]: Start difference. First operand has 260 places, 113 transitions, 966 flow. Second operand 77 states and 1322 transitions. [2024-11-28 02:29:11,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1965 transitions, 23857 flow [2024-11-28 02:29:11,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1965 transitions, 23429 flow, removed 196 selfloop flow, removed 23 redundant places. [2024-11-28 02:29:11,604 INFO L231 Difference]: Finished difference. Result has 249 places, 160 transitions, 1567 flow [2024-11-28 02:29:11,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=1567, PETRI_PLACES=249, PETRI_TRANSITIONS=160} [2024-11-28 02:29:11,605 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 203 predicate places. [2024-11-28 02:29:11,605 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 160 transitions, 1567 flow [2024-11-28 02:29:11,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 10.589473684210526) internal successors, (1006), 95 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:11,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:11,605 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2024-11-28 02:29:11,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 02:29:11,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-28 02:29:11,806 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:29:11,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1285601503, now seen corresponding path program 11 times [2024-11-28 02:29:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616090675] [2024-11-28 02:29:11,807 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:29:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:11,845 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:29:11,845 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616090675] [2024-11-28 02:29:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616090675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361811620] [2024-11-28 02:29:13,349 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:29:13,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:13,351 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:13,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 02:29:13,775 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:29:13,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:13,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-28 02:29:13,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:14,623 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 [2024-11-28 02:29:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:16,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:17,735 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 [2024-11-28 02:29:17,738 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 [2024-11-28 02:29:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361811620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:17,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:17,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 91 [2024-11-28 02:29:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768576609] [2024-11-28 02:29:17,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:17,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-28 02:29:17,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:17,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-28 02:29:17,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=8282, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 02:29:20,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:29:20,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 160 transitions, 1567 flow. Second operand has 93 states, 93 states have (on average 11.333333333333334) internal successors, (1054), 93 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:20,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:20,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:29:20,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:32,953 INFO L124 PetriNetUnfolderBase]: 7238/14111 cut-off events. [2024-11-28 02:29:32,953 INFO L125 PetriNetUnfolderBase]: For 96037/96687 co-relation queries the response was YES. [2024-11-28 02:29:33,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71684 conditions, 14111 events. 7238/14111 cut-off events. For 96037/96687 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 102143 event pairs, 710 based on Foata normal form. 198/14206 useless extension candidates. Maximal degree in co-relation 71659. Up to 3054 conditions per place. [2024-11-28 02:29:33,058 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 906 selfloop transitions, 98 changer transitions 0/1021 dead transitions. [2024-11-28 02:29:33,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1021 transitions, 12327 flow [2024-11-28 02:29:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:29:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:29:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 791 transitions. [2024-11-28 02:29:33,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3582427536231884 [2024-11-28 02:29:33,249 INFO L175 Difference]: Start difference. First operand has 249 places, 160 transitions, 1567 flow. Second operand 48 states and 791 transitions. [2024-11-28 02:29:33,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1021 transitions, 12327 flow [2024-11-28 02:29:33,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1021 transitions, 12102 flow, removed 14 selfloop flow, removed 46 redundant places. [2024-11-28 02:29:33,436 INFO L231 Difference]: Finished difference. Result has 252 places, 162 transitions, 1610 flow [2024-11-28 02:29:33,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1610, PETRI_PLACES=252, PETRI_TRANSITIONS=162} [2024-11-28 02:29:33,437 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 206 predicate places. [2024-11-28 02:29:33,437 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 162 transitions, 1610 flow [2024-11-28 02:29:33,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 11.333333333333334) internal successors, (1054), 93 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:33,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:33,437 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:33,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 02:29:33,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-28 02:29:33,638 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:29:33,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash 82044319, now seen corresponding path program 13 times [2024-11-28 02:29:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285002081] [2024-11-28 02:29:33,639 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:29:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285002081] [2024-11-28 02:29:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285002081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837511835] [2024-11-28 02:29:35,608 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:29:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:35,610 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 02:29:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:35,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-28 02:29:35,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:36,692 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 [2024-11-28 02:29:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:37,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:39,258 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 [2024-11-28 02:29:39,261 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 [2024-11-28 02:29:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:39,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837511835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:39,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:39,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 91 [2024-11-28 02:29:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717065578] [2024-11-28 02:29:39,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:39,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-28 02:29:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:39,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-28 02:29:39,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=8214, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 02:29:41,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:29:41,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 162 transitions, 1610 flow. Second operand has 93 states, 93 states have (on average 11.397849462365592) internal successors, (1060), 93 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:41,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:29:41,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:29:41,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:29:53,969 INFO L124 PetriNetUnfolderBase]: 8095/15384 cut-off events. [2024-11-28 02:29:53,969 INFO L125 PetriNetUnfolderBase]: For 127378/128074 co-relation queries the response was YES. [2024-11-28 02:29:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79725 conditions, 15384 events. 8095/15384 cut-off events. For 127378/128074 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 111126 event pairs, 937 based on Foata normal form. 189/15467 useless extension candidates. Maximal degree in co-relation 79700. Up to 3093 conditions per place. [2024-11-28 02:29:54,191 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1796 selfloop transitions, 60 changer transitions 0/1883 dead transitions. [2024-11-28 02:29:54,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1883 transitions, 26109 flow [2024-11-28 02:29:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:29:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-28 02:29:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 766 transitions. [2024-11-28 02:29:54,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34692028985507245 [2024-11-28 02:29:54,195 INFO L175 Difference]: Start difference. First operand has 252 places, 162 transitions, 1610 flow. Second operand 48 states and 766 transitions. [2024-11-28 02:29:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1883 transitions, 26109 flow [2024-11-28 02:29:54,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1883 transitions, 23738 flow, removed 27 selfloop flow, removed 45 redundant places. [2024-11-28 02:29:54,442 INFO L231 Difference]: Finished difference. Result has 256 places, 166 transitions, 1655 flow [2024-11-28 02:29:54,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1655, PETRI_PLACES=256, PETRI_TRANSITIONS=166} [2024-11-28 02:29:54,447 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 210 predicate places. [2024-11-28 02:29:54,447 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 166 transitions, 1655 flow [2024-11-28 02:29:54,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 11.397849462365592) internal successors, (1060), 93 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:54,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:29:54,448 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:54,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 02:29:54,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-28 02:29:54,649 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:29:54,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash 82044318, now seen corresponding path program 10 times [2024-11-28 02:29:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956085971] [2024-11-28 02:29:54,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:29:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:54,689 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:29:54,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 150 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956085971] [2024-11-28 02:29:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956085971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154754517] [2024-11-28 02:29:56,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:29:56,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:56,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:56,975 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:56,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 02:29:57,386 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:29:57,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:57,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 02:29:57,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:58,280 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 [2024-11-28 02:29:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:59,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:01,417 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 [2024-11-28 02:30:01,423 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 [2024-11-28 02:30:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154754517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:01,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 93 [2024-11-28 02:30:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302187364] [2024-11-28 02:30:01,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:01,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 02:30:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:01,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 02:30:01,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=8558, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 02:30:04,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:30:04,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 166 transitions, 1655 flow. Second operand has 95 states, 95 states have (on average 10.652631578947368) internal successors, (1012), 95 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:04,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:04,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:30:04,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:19,871 INFO L124 PetriNetUnfolderBase]: 9724/16463 cut-off events. [2024-11-28 02:30:19,871 INFO L125 PetriNetUnfolderBase]: For 135838/136842 co-relation queries the response was YES. [2024-11-28 02:30:19,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89006 conditions, 16463 events. 9724/16463 cut-off events. For 135838/136842 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 110369 event pairs, 1058 based on Foata normal form. 261/16662 useless extension candidates. Maximal degree in co-relation 88980. Up to 2477 conditions per place. [2024-11-28 02:30:20,031 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1935 selfloop transitions, 101 changer transitions 0/2061 dead transitions. [2024-11-28 02:30:20,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2061 transitions, 25695 flow [2024-11-28 02:30:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-28 02:30:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-11-28 02:30:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 1240 transitions. [2024-11-28 02:30:20,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3500846979107849 [2024-11-28 02:30:20,034 INFO L175 Difference]: Start difference. First operand has 256 places, 166 transitions, 1655 flow. Second operand 77 states and 1240 transitions. [2024-11-28 02:30:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2061 transitions, 25695 flow [2024-11-28 02:30:20,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 2061 transitions, 25337 flow, removed 18 selfloop flow, removed 49 redundant places. [2024-11-28 02:30:20,204 INFO L231 Difference]: Finished difference. Result has 286 places, 207 transitions, 2028 flow [2024-11-28 02:30:20,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=2028, PETRI_PLACES=286, PETRI_TRANSITIONS=207} [2024-11-28 02:30:20,205 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 240 predicate places. [2024-11-28 02:30:20,205 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 207 transitions, 2028 flow [2024-11-28 02:30:20,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 10.652631578947368) internal successors, (1012), 95 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:20,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:20,206 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2024-11-28 02:30:20,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:20,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:20,407 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:30:20,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 411033258, now seen corresponding path program 12 times [2024-11-28 02:30:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885205796] [2024-11-28 02:30:20,407 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:20,748 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 02:30:20,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:22,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885205796] [2024-11-28 02:30:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885205796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136687140] [2024-11-28 02:30:22,263 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:22,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:22,268 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:22,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 02:30:23,159 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 02:30:23,159 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:23,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:30:23,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:24,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136687140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:26,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 97 [2024-11-28 02:30:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480980695] [2024-11-28 02:30:26,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:26,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-28 02:30:26,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:26,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-28 02:30:26,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1414, Invalid=8092, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 02:30:26,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:30:26,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 207 transitions, 2028 flow. Second operand has 98 states, 98 states have (on average 10.408163265306122) internal successors, (1020), 98 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:26,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:26,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:30:26,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:33,327 INFO L124 PetriNetUnfolderBase]: 9220/16214 cut-off events. [2024-11-28 02:30:33,327 INFO L125 PetriNetUnfolderBase]: For 115039/115722 co-relation queries the response was YES. [2024-11-28 02:30:33,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83860 conditions, 16214 events. 9220/16214 cut-off events. For 115039/115722 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 110199 event pairs, 4134 based on Foata normal form. 190/16323 useless extension candidates. Maximal degree in co-relation 83833. Up to 7706 conditions per place. [2024-11-28 02:30:33,461 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 610 selfloop transitions, 52 changer transitions 200/886 dead transitions. [2024-11-28 02:30:33,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 886 transitions, 11018 flow [2024-11-28 02:30:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 02:30:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-28 02:30:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 632 transitions. [2024-11-28 02:30:33,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32712215320910976 [2024-11-28 02:30:33,463 INFO L175 Difference]: Start difference. First operand has 286 places, 207 transitions, 2028 flow. Second operand 42 states and 632 transitions. [2024-11-28 02:30:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 886 transitions, 11018 flow [2024-11-28 02:30:33,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 886 transitions, 9841 flow, removed 121 selfloop flow, removed 48 redundant places. [2024-11-28 02:30:33,828 INFO L231 Difference]: Finished difference. Result has 280 places, 194 transitions, 1794 flow [2024-11-28 02:30:33,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1794, PETRI_PLACES=280, PETRI_TRANSITIONS=194} [2024-11-28 02:30:33,829 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 234 predicate places. [2024-11-28 02:30:33,829 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 194 transitions, 1794 flow [2024-11-28 02:30:33,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 10.408163265306122) internal successors, (1020), 98 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:33,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:33,829 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:33,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-28 02:30:34,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:34,030 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:30:34,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1895101637, now seen corresponding path program 14 times [2024-11-28 02:30:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305693806] [2024-11-28 02:30:34,031 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:34,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:34,080 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305693806] [2024-11-28 02:30:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305693806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023787020] [2024-11-28 02:30:35,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:35,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:35,134 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:35,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 02:30:35,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:35,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:35,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:30:35,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:37,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 208 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:38,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023787020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:38,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:38,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 97 [2024-11-28 02:30:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600791139] [2024-11-28 02:30:38,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:38,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-28 02:30:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:38,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-28 02:30:38,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1414, Invalid=8092, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 02:30:39,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:30:39,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 194 transitions, 1794 flow. Second operand has 98 states, 98 states have (on average 10.428571428571429) internal successors, (1022), 98 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:39,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:39,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:30:39,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:45,873 INFO L124 PetriNetUnfolderBase]: 8268/14238 cut-off events. [2024-11-28 02:30:45,873 INFO L125 PetriNetUnfolderBase]: For 94103/94893 co-relation queries the response was YES. [2024-11-28 02:30:45,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70716 conditions, 14238 events. 8268/14238 cut-off events. For 94103/94893 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 95430 event pairs, 3901 based on Foata normal form. 52/14222 useless extension candidates. Maximal degree in co-relation 70691. Up to 7788 conditions per place. [2024-11-28 02:30:45,983 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 86 selfloop transitions, 22 changer transitions 672/795 dead transitions. [2024-11-28 02:30:45,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 795 transitions, 9640 flow [2024-11-28 02:30:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 02:30:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-28 02:30:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 583 transitions. [2024-11-28 02:30:45,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30175983436853004 [2024-11-28 02:30:45,986 INFO L175 Difference]: Start difference. First operand has 280 places, 194 transitions, 1794 flow. Second operand 42 states and 583 transitions. [2024-11-28 02:30:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 795 transitions, 9640 flow [2024-11-28 02:30:46,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 795 transitions, 8755 flow, removed 2 selfloop flow, removed 42 redundant places. [2024-11-28 02:30:46,125 INFO L231 Difference]: Finished difference. Result has 279 places, 123 transitions, 1090 flow [2024-11-28 02:30:46,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1090, PETRI_PLACES=279, PETRI_TRANSITIONS=123} [2024-11-28 02:30:46,126 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 233 predicate places. [2024-11-28 02:30:46,126 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 123 transitions, 1090 flow [2024-11-28 02:30:46,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 10.428571428571429) internal successors, (1022), 98 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:46,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:46,126 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2024-11-28 02:30:46,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 02:30:46,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:46,327 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:30:46,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash -380075408, now seen corresponding path program 13 times [2024-11-28 02:30:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790756139] [2024-11-28 02:30:46,328 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:46,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:48,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:48,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790756139] [2024-11-28 02:30:48,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790756139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799713824] [2024-11-28 02:30:48,657 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:48,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:48,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:48,661 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:48,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 02:30:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:49,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 02:30:49,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:50,191 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 [2024-11-28 02:30:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:51,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:54,122 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 [2024-11-28 02:30:54,126 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 [2024-11-28 02:30:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799713824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:54,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 101 [2024-11-28 02:30:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202762718] [2024-11-28 02:30:54,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:54,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 02:30:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:54,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 02:30:54,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=10194, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:30:58,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:30:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 123 transitions, 1090 flow. Second operand has 103 states, 103 states have (on average 11.330097087378642) internal successors, (1167), 103 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:30:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:14,035 INFO L124 PetriNetUnfolderBase]: 4431/8607 cut-off events. [2024-11-28 02:31:14,035 INFO L125 PetriNetUnfolderBase]: For 51465/51722 co-relation queries the response was YES. [2024-11-28 02:31:14,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42640 conditions, 8607 events. 4431/8607 cut-off events. For 51465/51722 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 54978 event pairs, 431 based on Foata normal form. 56/8639 useless extension candidates. Maximal degree in co-relation 42616. Up to 1711 conditions per place. [2024-11-28 02:31:14,089 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1127 selfloop transitions, 65 changer transitions 0/1208 dead transitions. [2024-11-28 02:31:14,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1208 transitions, 13957 flow [2024-11-28 02:31:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 02:31:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-28 02:31:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 894 transitions. [2024-11-28 02:31:14,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35990338164251207 [2024-11-28 02:31:14,091 INFO L175 Difference]: Start difference. First operand has 279 places, 123 transitions, 1090 flow. Second operand 54 states and 894 transitions. [2024-11-28 02:31:14,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1208 transitions, 13957 flow [2024-11-28 02:31:14,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 1208 transitions, 13845 flow, removed 34 selfloop flow, removed 24 redundant places. [2024-11-28 02:31:14,218 INFO L231 Difference]: Finished difference. Result has 234 places, 127 transitions, 1260 flow [2024-11-28 02:31:14,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=1260, PETRI_PLACES=234, PETRI_TRANSITIONS=127} [2024-11-28 02:31:14,219 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 188 predicate places. [2024-11-28 02:31:14,219 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 127 transitions, 1260 flow [2024-11-28 02:31:14,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 11.330097087378642) internal successors, (1167), 103 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:14,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:14,219 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2024-11-28 02:31:14,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 02:31:14,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 02:31:14,420 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:31:14,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash -380075409, now seen corresponding path program 11 times [2024-11-28 02:31:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509445235] [2024-11-28 02:31:14,421 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:31:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:14,614 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:31:14,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509445235] [2024-11-28 02:31:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509445235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482056355] [2024-11-28 02:31:16,299 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:31:16,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:16,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:16,304 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 02:31:16,792 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:31:16,792 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:16,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 02:31:16,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:17,917 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 15 treesize of output 1 [2024-11-28 02:31:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:19,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:21,915 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 [2024-11-28 02:31:21,918 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 [2024-11-28 02:31:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482056355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:21,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 101 [2024-11-28 02:31:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35550021] [2024-11-28 02:31:21,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:21,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 02:31:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:21,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 02:31:21,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=10164, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:31:24,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:31:24,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 127 transitions, 1260 flow. Second operand has 103 states, 103 states have (on average 11.330097087378642) internal successors, (1167), 103 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:24,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:24,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:31:24,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:38,332 INFO L124 PetriNetUnfolderBase]: 4336/8455 cut-off events. [2024-11-28 02:31:38,332 INFO L125 PetriNetUnfolderBase]: For 59932/60113 co-relation queries the response was YES. [2024-11-28 02:31:38,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43474 conditions, 8455 events. 4336/8455 cut-off events. For 59932/60113 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 54022 event pairs, 431 based on Foata normal form. 56/8487 useless extension candidates. Maximal degree in co-relation 43451. Up to 1711 conditions per place. [2024-11-28 02:31:38,386 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1126 selfloop transitions, 65 changer transitions 0/1207 dead transitions. [2024-11-28 02:31:38,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1207 transitions, 13980 flow [2024-11-28 02:31:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 02:31:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-28 02:31:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 893 transitions. [2024-11-28 02:31:38,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35950080515297905 [2024-11-28 02:31:38,389 INFO L175 Difference]: Start difference. First operand has 234 places, 127 transitions, 1260 flow. Second operand 54 states and 893 transitions. [2024-11-28 02:31:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1207 transitions, 13980 flow [2024-11-28 02:31:38,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1207 transitions, 13796 flow, removed 8 selfloop flow, removed 52 redundant places. [2024-11-28 02:31:38,585 INFO L231 Difference]: Finished difference. Result has 235 places, 126 transitions, 1186 flow [2024-11-28 02:31:38,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=1186, PETRI_PLACES=235, PETRI_TRANSITIONS=126} [2024-11-28 02:31:38,586 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 189 predicate places. [2024-11-28 02:31:38,586 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 126 transitions, 1186 flow [2024-11-28 02:31:38,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 11.330097087378642) internal successors, (1167), 103 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:38,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:38,587 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:38,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-28 02:31:38,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 02:31:38,787 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:31:38,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1941318271, now seen corresponding path program 15 times [2024-11-28 02:31:38,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:38,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546758489] [2024-11-28 02:31:38,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:38,860 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:31:38,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 191 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546758489] [2024-11-28 02:31:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546758489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384809328] [2024-11-28 02:31:40,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:40,824 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 02:31:41,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:31:41,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:41,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-28 02:31:41,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:42,258 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 [2024-11-28 02:31:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:44,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:46,197 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 [2024-11-28 02:31:46,200 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 [2024-11-28 02:31:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384809328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:46,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40, 40] total 103 [2024-11-28 02:31:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029451966] [2024-11-28 02:31:46,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:46,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 02:31:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:46,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 02:31:46,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=10476, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 02:31:49,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:31:49,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 126 transitions, 1186 flow. Second operand has 105 states, 105 states have (on average 10.647619047619047) internal successors, (1118), 105 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:49,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:49,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:31:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:10,259 INFO L124 PetriNetUnfolderBase]: 11722/19535 cut-off events. [2024-11-28 02:32:10,260 INFO L125 PetriNetUnfolderBase]: For 169522/170913 co-relation queries the response was YES. [2024-11-28 02:32:10,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106586 conditions, 19535 events. 11722/19535 cut-off events. For 169522/170913 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 131100 event pairs, 880 based on Foata normal form. 186/19652 useless extension candidates. Maximal degree in co-relation 106566. Up to 2909 conditions per place. [2024-11-28 02:32:10,410 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 2474 selfloop transitions, 112 changer transitions 0/2601 dead transitions. [2024-11-28 02:32:10,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 2601 transitions, 36932 flow [2024-11-28 02:32:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-28 02:32:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-28 02:32:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1457 transitions. [2024-11-28 02:32:10,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3599308300395257 [2024-11-28 02:32:10,414 INFO L175 Difference]: Start difference. First operand has 235 places, 126 transitions, 1186 flow. Second operand 88 states and 1457 transitions. [2024-11-28 02:32:10,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 2601 transitions, 36932 flow [2024-11-28 02:32:10,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 2601 transitions, 33666 flow, removed 0 selfloop flow, removed 51 redundant places. [2024-11-28 02:32:10,569 INFO L231 Difference]: Finished difference. Result has 277 places, 179 transitions, 1828 flow [2024-11-28 02:32:10,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1828, PETRI_PLACES=277, PETRI_TRANSITIONS=179} [2024-11-28 02:32:10,570 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 231 predicate places. [2024-11-28 02:32:10,570 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 179 transitions, 1828 flow [2024-11-28 02:32:10,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 10.647619047619047) internal successors, (1118), 105 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:10,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:10,571 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:10,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-28 02:32:10,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 02:32:10,771 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:32:10,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1941318272, now seen corresponding path program 11 times [2024-11-28 02:32:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044341183] [2024-11-28 02:32:10,772 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:32:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:10,848 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:32:10,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044341183] [2024-11-28 02:32:12,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044341183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877401595] [2024-11-28 02:32:12,610 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:32:12,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:12,612 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:12,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 02:32:13,097 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:32:13,097 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:13,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 02:32:13,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:14,215 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 15 treesize of output 1 [2024-11-28 02:32:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:15,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:17,874 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 [2024-11-28 02:32:17,877 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 [2024-11-28 02:32:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 11 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877401595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:17,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:17,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 101 [2024-11-28 02:32:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437243045] [2024-11-28 02:32:17,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:17,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 02:32:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:17,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 02:32:17,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=10164, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:32:20,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:32:20,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 179 transitions, 1828 flow. Second operand has 103 states, 103 states have (on average 11.388349514563107) internal successors, (1173), 103 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:20,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:32:20,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:32:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:35,680 INFO L124 PetriNetUnfolderBase]: 9198/16867 cut-off events. [2024-11-28 02:32:35,680 INFO L125 PetriNetUnfolderBase]: For 135850/136907 co-relation queries the response was YES. [2024-11-28 02:32:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93247 conditions, 16867 events. 9198/16867 cut-off events. For 135850/136907 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 120428 event pairs, 967 based on Foata normal form. 127/16907 useless extension candidates. Maximal degree in co-relation 93221. Up to 3179 conditions per place. [2024-11-28 02:32:35,819 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1194 selfloop transitions, 108 changer transitions 0/1320 dead transitions. [2024-11-28 02:32:35,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1320 transitions, 17197 flow [2024-11-28 02:32:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 02:32:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-28 02:32:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 863 transitions. [2024-11-28 02:32:35,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3474235104669887 [2024-11-28 02:32:35,821 INFO L175 Difference]: Start difference. First operand has 277 places, 179 transitions, 1828 flow. Second operand 54 states and 863 transitions. [2024-11-28 02:32:35,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1320 transitions, 17197 flow [2024-11-28 02:32:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1320 transitions, 16911 flow, removed 26 selfloop flow, removed 49 redundant places. [2024-11-28 02:32:36,009 INFO L231 Difference]: Finished difference. Result has 283 places, 180 transitions, 1814 flow [2024-11-28 02:32:36,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=1814, PETRI_PLACES=283, PETRI_TRANSITIONS=180} [2024-11-28 02:32:36,009 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 237 predicate places. [2024-11-28 02:32:36,010 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 180 transitions, 1814 flow [2024-11-28 02:32:36,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 11.388349514563107) internal successors, (1173), 103 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:36,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:36,010 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-11-28 02:32:36,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-11-28 02:32:36,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:36,211 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:32:36,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -354263877, now seen corresponding path program 14 times [2024-11-28 02:32:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:36,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341657454] [2024-11-28 02:32:36,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:32:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:36,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:32:36,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:37,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341657454] [2024-11-28 02:32:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341657454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291277701] [2024-11-28 02:32:37,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:32:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:37,845 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 02:32:38,288 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:32:38,288 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:38,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:32:38,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:39,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:41,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291277701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:41,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:41,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 107 [2024-11-28 02:32:41,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426617679] [2024-11-28 02:32:41,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:41,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-28 02:32:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:41,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-28 02:32:41,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9857, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 02:32:42,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:32:42,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 180 transitions, 1814 flow. Second operand has 108 states, 108 states have (on average 10.407407407407407) internal successors, (1124), 108 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:42,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:32:42,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:32:42,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:48,517 INFO L124 PetriNetUnfolderBase]: 10995/19061 cut-off events. [2024-11-28 02:32:48,517 INFO L125 PetriNetUnfolderBase]: For 141908/142600 co-relation queries the response was YES. [2024-11-28 02:32:48,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102585 conditions, 19061 events. 10995/19061 cut-off events. For 141908/142600 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 130804 event pairs, 4939 based on Foata normal form. 136/19045 useless extension candidates. Maximal degree in co-relation 102558. Up to 9197 conditions per place. [2024-11-28 02:32:48,887 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 712 selfloop transitions, 57 changer transitions 242/1039 dead transitions. [2024-11-28 02:32:48,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1039 transitions, 13300 flow [2024-11-28 02:32:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 02:32:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 02:32:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 691 transitions. [2024-11-28 02:32:48,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32655954631379963 [2024-11-28 02:32:48,890 INFO L175 Difference]: Start difference. First operand has 283 places, 180 transitions, 1814 flow. Second operand 46 states and 691 transitions. [2024-11-28 02:32:48,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 1039 transitions, 13300 flow [2024-11-28 02:32:49,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1039 transitions, 11899 flow, removed 24 selfloop flow, removed 54 redundant places. [2024-11-28 02:32:49,355 INFO L231 Difference]: Finished difference. Result has 297 places, 202 transitions, 2074 flow [2024-11-28 02:32:49,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2074, PETRI_PLACES=297, PETRI_TRANSITIONS=202} [2024-11-28 02:32:49,356 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 251 predicate places. [2024-11-28 02:32:49,357 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 202 transitions, 2074 flow [2024-11-28 02:32:49,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 10.407407407407407) internal successors, (1124), 108 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:49,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:49,357 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:49,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 02:32:49,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:49,558 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:32:49,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 917092504, now seen corresponding path program 12 times [2024-11-28 02:32:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133346246] [2024-11-28 02:32:49,559 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:32:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:49,700 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 02:32:49,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:51,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133346246] [2024-11-28 02:32:51,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133346246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301374962] [2024-11-28 02:32:51,430 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:32:51,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:51,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:51,432 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:51,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 02:32:52,787 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 02:32:52,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:52,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:32:52,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:54,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 256 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301374962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:55,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:55,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 107 [2024-11-28 02:32:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42857533] [2024-11-28 02:32:55,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:55,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-28 02:32:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:55,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-28 02:32:55,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9857, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 02:32:56,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:32:56,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 202 transitions, 2074 flow. Second operand has 108 states, 108 states have (on average 10.425925925925926) internal successors, (1126), 108 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:56,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:32:56,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:32:56,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:01,891 INFO L124 PetriNetUnfolderBase]: 9881/16942 cut-off events. [2024-11-28 02:33:01,891 INFO L125 PetriNetUnfolderBase]: For 153866/155979 co-relation queries the response was YES. [2024-11-28 02:33:01,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93042 conditions, 16942 events. 9881/16942 cut-off events. For 153866/155979 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 115578 event pairs, 4624 based on Foata normal form. 866/17733 useless extension candidates. Maximal degree in co-relation 92996. Up to 9221 conditions per place. [2024-11-28 02:33:02,027 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 94 selfloop transitions, 24 changer transitions 805/938 dead transitions. [2024-11-28 02:33:02,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 938 transitions, 13209 flow [2024-11-28 02:33:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 02:33:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 02:33:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 637 transitions. [2024-11-28 02:33:02,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30103969754253307 [2024-11-28 02:33:02,029 INFO L175 Difference]: Start difference. First operand has 297 places, 202 transitions, 2074 flow. Second operand 46 states and 637 transitions. [2024-11-28 02:33:02,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 938 transitions, 13209 flow [2024-11-28 02:33:02,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 938 transitions, 12934 flow, removed 112 selfloop flow, removed 24 redundant places. [2024-11-28 02:33:02,204 INFO L231 Difference]: Finished difference. Result has 316 places, 133 transitions, 1285 flow [2024-11-28 02:33:02,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1285, PETRI_PLACES=316, PETRI_TRANSITIONS=133} [2024-11-28 02:33:02,205 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 270 predicate places. [2024-11-28 02:33:02,205 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 133 transitions, 1285 flow [2024-11-28 02:33:02,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 10.425925925925926) internal successors, (1126), 108 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:02,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:02,205 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-11-28 02:33:02,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 02:33:02,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:02,406 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:33:02,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1554654591, now seen corresponding path program 15 times [2024-11-28 02:33:02,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568386430] [2024-11-28 02:33:02,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:33:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:02,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 02:33:02,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 237 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:05,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568386430] [2024-11-28 02:33:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568386430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598848732] [2024-11-28 02:33:05,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:33:05,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:05,481 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:05,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 02:33:06,287 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 02:33:06,287 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:06,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 02:33:06,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:07,385 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 [2024-11-28 02:33:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:09,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:11,839 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 [2024-11-28 02:33:11,842 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 [2024-11-28 02:33:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598848732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:11,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 44] total 113 [2024-11-28 02:33:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463746569] [2024-11-28 02:33:11,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:11,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-28 02:33:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:11,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-28 02:33:11,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=12601, Unknown=0, NotChecked=0, Total=13110 [2024-11-28 02:33:16,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-11-28 02:33:16,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 133 transitions, 1285 flow. Second operand has 115 states, 115 states have (on average 10.591304347826087) internal successors, (1218), 115 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:16,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:16,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-11-28 02:33:16,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:43,916 INFO L124 PetriNetUnfolderBase]: 12609/21933 cut-off events. [2024-11-28 02:33:43,917 INFO L125 PetriNetUnfolderBase]: For 150064/150811 co-relation queries the response was YES. [2024-11-28 02:33:44,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120518 conditions, 21933 events. 12609/21933 cut-off events. For 150064/150811 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 151049 event pairs, 765 based on Foata normal form. 186/22056 useless extension candidates. Maximal degree in co-relation 120474. Up to 3249 conditions per place. [2024-11-28 02:33:44,168 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 2772 selfloop transitions, 122 changer transitions 0/2910 dead transitions. [2024-11-28 02:33:44,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 2910 transitions, 35371 flow [2024-11-28 02:33:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 02:33:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2024-11-28 02:33:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1657 transitions. [2024-11-28 02:33:44,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3752264492753623 [2024-11-28 02:33:44,172 INFO L175 Difference]: Start difference. First operand has 316 places, 133 transitions, 1285 flow. Second operand 96 states and 1657 transitions. [2024-11-28 02:33:44,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 2910 transitions, 35371 flow [2024-11-28 02:33:45,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 2910 transitions, 35133 flow, removed 93 selfloop flow, removed 46 redundant places. [2024-11-28 02:33:45,193 INFO L231 Difference]: Finished difference. Result has 297 places, 190 transitions, 2059 flow [2024-11-28 02:33:45,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=2059, PETRI_PLACES=297, PETRI_TRANSITIONS=190} [2024-11-28 02:33:45,193 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 251 predicate places. [2024-11-28 02:33:45,194 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 190 transitions, 2059 flow [2024-11-28 02:33:45,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 10.591304347826087) internal successors, (1218), 115 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:45,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:45,194 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-11-28 02:33:45,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-28 02:33:45,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:45,395 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:33:45,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1554654592, now seen corresponding path program 12 times [2024-11-28 02:33:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:45,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814584616] [2024-11-28 02:33:45,396 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:33:45,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:45,542 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 02:33:45,542 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814584616] [2024-11-28 02:33:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814584616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603307013] [2024-11-28 02:33:47,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:33:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:47,253 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:47,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 02:33:47,879 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 02:33:47,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:47,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 02:33:47,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:47,939 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 [2024-11-28 02:33:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:49,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:51,401 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 [2024-11-28 02:33:51,404 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 [2024-11-28 02:33:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603307013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:51,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 88 [2024-11-28 02:33:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139075614] [2024-11-28 02:33:51,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:51,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-28 02:33:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:51,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-28 02:33:51,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=7726, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 02:33:55,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:33:55,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 190 transitions, 2059 flow. Second operand has 90 states, 90 states have (on average 11.38888888888889) internal successors, (1025), 90 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:55,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:55,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:33:55,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:34:13,232 INFO L124 PetriNetUnfolderBase]: 9903/18869 cut-off events. [2024-11-28 02:34:13,232 INFO L125 PetriNetUnfolderBase]: For 154264/154973 co-relation queries the response was YES. [2024-11-28 02:34:13,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104306 conditions, 18869 events. 9903/18869 cut-off events. For 154264/154973 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 136938 event pairs, 691 based on Foata normal form. 181/18989 useless extension candidates. Maximal degree in co-relation 104279. Up to 3361 conditions per place. [2024-11-28 02:34:13,700 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 1341 selfloop transitions, 118 changer transitions 0/1478 dead transitions. [2024-11-28 02:34:13,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1478 transitions, 18097 flow [2024-11-28 02:34:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 02:34:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-28 02:34:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 976 transitions. [2024-11-28 02:34:13,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3596168017686072 [2024-11-28 02:34:13,703 INFO L175 Difference]: Start difference. First operand has 297 places, 190 transitions, 2059 flow. Second operand 59 states and 976 transitions. [2024-11-28 02:34:13,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1478 transitions, 18097 flow [2024-11-28 02:34:14,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 1478 transitions, 17744 flow, removed 27 selfloop flow, removed 58 redundant places. [2024-11-28 02:34:14,127 INFO L231 Difference]: Finished difference. Result has 299 places, 191 transitions, 2004 flow [2024-11-28 02:34:14,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=2004, PETRI_PLACES=299, PETRI_TRANSITIONS=191} [2024-11-28 02:34:14,128 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 253 predicate places. [2024-11-28 02:34:14,128 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 191 transitions, 2004 flow [2024-11-28 02:34:14,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 11.38888888888889) internal successors, (1025), 90 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:34:14,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:34:14,129 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:14,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-28 02:34:14,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:14,330 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 02:34:14,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1607148322, now seen corresponding path program 13 times [2024-11-28 02:34:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663654098] [2024-11-28 02:34:14,331 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:34:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663654098] [2024-11-28 02:34:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663654098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49897842] [2024-11-28 02:34:16,788 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:34:16,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:16,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:16,790 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28719-aa5e-4786-824c-e202e9e1db54/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 02:34:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:17,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 02:34:17,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:34:18,548 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 [2024-11-28 02:34:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:20,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:23,412 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 [2024-11-28 02:34:23,415 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 [2024-11-28 02:34:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 12 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49897842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:34:23,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:34:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 111 [2024-11-28 02:34:23,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821964578] [2024-11-28 02:34:23,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:34:23,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-28 02:34:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:23,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-28 02:34:23,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=12313, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 02:34:27,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-11-28 02:34:27,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 191 transitions, 2004 flow. Second operand has 113 states, 113 states have (on average 11.380530973451327) internal successors, (1286), 113 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:34:27,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:34:27,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-11-28 02:34:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand