./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.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_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/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_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/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_d29fce2a-f4a9-40a8-bd89-cd6374696c83/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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:24:47,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:24:47,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:24:47,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:24:47,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:24:47,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:24:47,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:24:47,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:24:47,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:24:47,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:24:47,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:24:47,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:24:47,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:24:47,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:24:47,934 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:24:47,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:24:47,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:24:47,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:24:47,935 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:24:47,936 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:24:47,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:47,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:47,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:24:47,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:24:47,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:24:47,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:24:47,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:24:47,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:24:47,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:24:47,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:24:47,939 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_d29fce2a-f4a9-40a8-bd89-cd6374696c83/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 -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-28 04:24:48,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:24:48,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:24:48,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:24:48,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:24:48,279 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:24:48,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-28 04:24:51,315 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/data/f8c7b7172/f57ddc9763fc43c78f33a9bd005ae34c/FLAGf559ec458 [2024-11-28 04:24:51,649 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:24:51,650 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-28 04:24:51,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/data/f8c7b7172/f57ddc9763fc43c78f33a9bd005ae34c/FLAGf559ec458 [2024-11-28 04:24:51,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/data/f8c7b7172/f57ddc9763fc43c78f33a9bd005ae34c [2024-11-28 04:24:51,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:24:51,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:24:51,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:24:51,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:24:51,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:24:51,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:24:51" (1/1) ... [2024-11-28 04:24:51,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d04b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:51, skipping insertion in model container [2024-11-28 04:24:51,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:24:51" (1/1) ... [2024-11-28 04:24:51,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:24:52,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:24:52,176 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:24:52,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:24:52,230 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:24:52,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52 WrapperNode [2024-11-28 04:24:52,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:24:52,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:24:52,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:24:52,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:24:52,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,302 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 165 [2024-11-28 04:24:52,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:24:52,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:24:52,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:24:52,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:24:52,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,348 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 04:24:52,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,365 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:24:52,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:24:52,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:24:52,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:24:52,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (1/1) ... [2024-11-28 04:24:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:24:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:52,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:24:52,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:24:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:24:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:24:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:24:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:24:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:24:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:24:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:24:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:24:52,470 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 04:24:52,616 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:24:52,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:24:52,979 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:24:52,979 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:24:53,322 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:24:53,322 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:24:53,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:53 BoogieIcfgContainer [2024-11-28 04:24:53,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:24:53,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:24:53,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:24:53,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:24:53,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:24:51" (1/3) ... [2024-11-28 04:24:53,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b64b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:53, skipping insertion in model container [2024-11-28 04:24:53,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:24:52" (2/3) ... [2024-11-28 04:24:53,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b64b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:53, skipping insertion in model container [2024-11-28 04:24:53,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:53" (3/3) ... [2024-11-28 04:24:53,339 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-28 04:24:53,358 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:24:53,360 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons.wvr.c that has 4 procedures, 46 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2024-11-28 04:24:53,361 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:24:53,467 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:24:53,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 119 flow [2024-11-28 04:24:53,588 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-28 04:24:53,590 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:24:53,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 4/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 126 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-28 04:24:53,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 119 flow [2024-11-28 04:24:53,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 98 flow [2024-11-28 04:24:53,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:53,641 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;@26e4a778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:53,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 04:24:53,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:24:53,650 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:24:53,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:24:53,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:53,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:24:53,652 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:53,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash 499323, now seen corresponding path program 1 times [2024-11-28 04:24:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567324994] [2024-11-28 04:24:53,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:53,997 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 04:24:54,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:54,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567324994] [2024-11-28 04:24:54,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567324994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:54,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628178699] [2024-11-28 04:24:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:54,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:54,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:54,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:54,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:24:54,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:54,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:54,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:24:54,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:54,650 INFO L124 PetriNetUnfolderBase]: 789/1403 cut-off events. [2024-11-28 04:24:54,650 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-28 04:24:54,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 1403 events. 789/1403 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8457 event pairs, 617 based on Foata normal form. 1/1070 useless extension candidates. Maximal degree in co-relation 2580. Up to 1149 conditions per place. [2024-11-28 04:24:54,679 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-28 04:24:54,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 146 flow [2024-11-28 04:24:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:24:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-28 04:24:54,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-28 04:24:54,699 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-11-28 04:24:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 146 flow [2024-11-28 04:24:54,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:24:54,712 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 94 flow [2024-11-28 04:24:54,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-28 04:24:54,719 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-28 04:24:54,719 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 94 flow [2024-11-28 04:24:54,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:54,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:54,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 04:24:54,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:24:54,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:54,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash 15479487, now seen corresponding path program 1 times [2024-11-28 04:24:54,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:54,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223115242] [2024-11-28 04:24:54,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:54,880 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 04:24:54,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223115242] [2024-11-28 04:24:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223115242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:54,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941052403] [2024-11-28 04:24:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:54,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:54,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:54,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:54,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:54,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:24:54,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:54,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:54,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:24:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:55,310 INFO L124 PetriNetUnfolderBase]: 790/1407 cut-off events. [2024-11-28 04:24:55,310 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 04:24:55,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1407 events. 790/1407 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8520 event pairs, 617 based on Foata normal form. 1/1074 useless extension candidates. Maximal degree in co-relation 2671. Up to 1154 conditions per place. [2024-11-28 04:24:55,326 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-28 04:24:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 166 flow [2024-11-28 04:24:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:24:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-28 04:24:55,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-11-28 04:24:55,331 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 94 flow. Second operand 4 states and 95 transitions. [2024-11-28 04:24:55,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 166 flow [2024-11-28 04:24:55,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:24:55,339 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 113 flow [2024-11-28 04:24:55,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-28 04:24:55,340 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-11-28 04:24:55,340 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 113 flow [2024-11-28 04:24:55,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:55,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:55,341 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:24:55,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:24:55,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:55,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1588361368, now seen corresponding path program 1 times [2024-11-28 04:24:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371999158] [2024-11-28 04:24:55,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:55,526 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 04:24:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371999158] [2024-11-28 04:24:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371999158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884688180] [2024-11-28 04:24:55,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:55,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:55,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:55,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:55,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:24:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:55,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:24:55,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:55,674 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 04:24:55,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:24:55,749 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 04:24:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884688180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:24:55,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:24:55,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 04:24:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826390199] [2024-11-28 04:24:55,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:24:55,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:24:55,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:55,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:24:55,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:24:55,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:24:55,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 113 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 04:24:55,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:55,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:24:55,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:56,283 INFO L124 PetriNetUnfolderBase]: 793/1419 cut-off events. [2024-11-28 04:24:56,283 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 04:24:56,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1419 events. 793/1419 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8557 event pairs, 617 based on Foata normal form. 0/1082 useless extension candidates. Maximal degree in co-relation 2678. Up to 1157 conditions per place. [2024-11-28 04:24:56,302 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-11-28 04:24:56,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 227 flow [2024-11-28 04:24:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:24:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:24:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-11-28 04:24:56,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4122448979591837 [2024-11-28 04:24:56,305 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 113 flow. Second operand 10 states and 202 transitions. [2024-11-28 04:24:56,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 227 flow [2024-11-28 04:24:56,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:24:56,310 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 190 flow [2024-11-28 04:24:56,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-28 04:24:56,312 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-28 04:24:56,313 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 190 flow [2024-11-28 04:24:56,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 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 04:24:56,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:56,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:56,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:24:56,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:56,517 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:56,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash -379174141, now seen corresponding path program 1 times [2024-11-28 04:24:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:56,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054797298] [2024-11-28 04:24:56,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:56,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:56,780 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 04:24:56,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:56,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054797298] [2024-11-28 04:24:56,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054797298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510956957] [2024-11-28 04:24:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:56,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:56,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:56,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:56,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:24:56,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 04:24:56,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:56,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:24:56,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:57,129 INFO L124 PetriNetUnfolderBase]: 909/1657 cut-off events. [2024-11-28 04:24:57,129 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 04:24:57,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 1657 events. 909/1657 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10087 event pairs, 733 based on Foata normal form. 34/1356 useless extension candidates. Maximal degree in co-relation 3194. Up to 1161 conditions per place. [2024-11-28 04:24:57,141 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 35 selfloop transitions, 2 changer transitions 14/65 dead transitions. [2024-11-28 04:24:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 324 flow [2024-11-28 04:24:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:24:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-28 04:24:57,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-28 04:24:57,143 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 190 flow. Second operand 4 states and 118 transitions. [2024-11-28 04:24:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 324 flow [2024-11-28 04:24:57,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 294 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-28 04:24:57,146 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 168 flow [2024-11-28 04:24:57,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-28 04:24:57,147 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-28 04:24:57,147 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 168 flow [2024-11-28 04:24:57,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 04:24:57,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:57,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:57,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:24:57,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:57,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1064170588, now seen corresponding path program 1 times [2024-11-28 04:24:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320105136] [2024-11-28 04:24:57,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:57,381 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 04:24:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320105136] [2024-11-28 04:24:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320105136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472168059] [2024-11-28 04:24:57,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:57,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:57,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:57,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:24:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:57,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:24:57,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:57,531 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 04:24:57,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:24:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472168059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:57,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:24:57,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-28 04:24:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920191828] [2024-11-28 04:24:57,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:57,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:57,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:57,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:57,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:24:57,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:24:57,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:57,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:57,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:24:57,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:57,703 INFO L124 PetriNetUnfolderBase]: 576/1064 cut-off events. [2024-11-28 04:24:57,703 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-28 04:24:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 1064 events. 576/1064 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5957 event pairs, 456 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 2148. Up to 859 conditions per place. [2024-11-28 04:24:57,711 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-11-28 04:24:57,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 230 flow [2024-11-28 04:24:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-28 04:24:57,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-28 04:24:57,713 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 168 flow. Second operand 3 states and 80 transitions. [2024-11-28 04:24:57,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 230 flow [2024-11-28 04:24:57,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:24:57,716 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 158 flow [2024-11-28 04:24:57,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-28 04:24:57,717 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-28 04:24:57,717 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 158 flow [2024-11-28 04:24:57,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:57,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:57,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:57,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:24:57,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:57,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:57,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash 465735166, now seen corresponding path program 1 times [2024-11-28 04:24:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:57,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270598112] [2024-11-28 04:24:57,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:58,021 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 04:24:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270598112] [2024-11-28 04:24:58,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270598112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:58,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:58,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:24:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095222362] [2024-11-28 04:24:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:58,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:58,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:58,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:58,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-28 04:24:58,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 04:24:58,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:58,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-28 04:24:58,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:58,323 INFO L124 PetriNetUnfolderBase]: 796/1435 cut-off events. [2024-11-28 04:24:58,323 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-28 04:24:58,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 1435 events. 796/1435 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8183 event pairs, 296 based on Foata normal form. 44/1196 useless extension candidates. Maximal degree in co-relation 2890. Up to 634 conditions per place. [2024-11-28 04:24:58,335 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 58 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-11-28 04:24:58,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 342 flow [2024-11-28 04:24:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:24:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-28 04:24:58,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-28 04:24:58,336 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 158 flow. Second operand 4 states and 112 transitions. [2024-11-28 04:24:58,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 342 flow [2024-11-28 04:24:58,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:24:58,343 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 170 flow [2024-11-28 04:24:58,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-28 04:24:58,344 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-11-28 04:24:58,345 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 170 flow [2024-11-28 04:24:58,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 04:24:58,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:58,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:58,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:24:58,346 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:58,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 81667068, now seen corresponding path program 1 times [2024-11-28 04:24:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318529684] [2024-11-28 04:24:58,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:58,430 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 04:24:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318529684] [2024-11-28 04:24:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318529684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415913407] [2024-11-28 04:24:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:58,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:58,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:58,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:58,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:24:58,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 04:24:58,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:58,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:24:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:58,657 INFO L124 PetriNetUnfolderBase]: 687/1246 cut-off events. [2024-11-28 04:24:58,657 INFO L125 PetriNetUnfolderBase]: For 331/366 co-relation queries the response was YES. [2024-11-28 04:24:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 1246 events. 687/1246 cut-off events. For 331/366 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6644 event pairs, 220 based on Foata normal form. 53/1180 useless extension candidates. Maximal degree in co-relation 2872. Up to 782 conditions per place. [2024-11-28 04:24:58,667 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 43 selfloop transitions, 2 changer transitions 4/62 dead transitions. [2024-11-28 04:24:58,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 306 flow [2024-11-28 04:24:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:24:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-28 04:24:58,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-28 04:24:58,669 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 170 flow. Second operand 3 states and 91 transitions. [2024-11-28 04:24:58,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 306 flow [2024-11-28 04:24:58,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:24:58,673 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 179 flow [2024-11-28 04:24:58,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-28 04:24:58,675 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-11-28 04:24:58,675 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 179 flow [2024-11-28 04:24:58,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 04:24:58,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:58,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:58,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:24:58,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:58,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1552888779, now seen corresponding path program 1 times [2024-11-28 04:24:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:58,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018912572] [2024-11-28 04:24:58,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:58,789 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 04:24:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018912572] [2024-11-28 04:24:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018912572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:24:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491254180] [2024-11-28 04:24:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:58,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:24:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:58,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:24:58,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:58,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:24:58,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 04:24:58,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:58,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:24:58,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:59,141 INFO L124 PetriNetUnfolderBase]: 687/1296 cut-off events. [2024-11-28 04:24:59,141 INFO L125 PetriNetUnfolderBase]: For 473/497 co-relation queries the response was YES. [2024-11-28 04:24:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 1296 events. 687/1296 cut-off events. For 473/497 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7279 event pairs, 167 based on Foata normal form. 24/1190 useless extension candidates. Maximal degree in co-relation 2936. Up to 532 conditions per place. [2024-11-28 04:24:59,153 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 52 selfloop transitions, 6 changer transitions 3/73 dead transitions. [2024-11-28 04:24:59,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 363 flow [2024-11-28 04:24:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:24:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:24:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-28 04:24:59,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-28 04:24:59,156 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 179 flow. Second operand 5 states and 129 transitions. [2024-11-28 04:24:59,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 363 flow [2024-11-28 04:24:59,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 351 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-28 04:24:59,162 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 179 flow [2024-11-28 04:24:59,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-11-28 04:24:59,164 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-11-28 04:24:59,166 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 179 flow [2024-11-28 04:24:59,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 04:24:59,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:59,167 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:24:59,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:24:59,167 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:59,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 864793983, now seen corresponding path program 2 times [2024-11-28 04:24:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376612308] [2024-11-28 04:24:59,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:24:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:59,190 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:24:59,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:24:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:24:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376612308] [2024-11-28 04:24:59,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376612308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689064447] [2024-11-28 04:24:59,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:24:59,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:59,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:59,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:59,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:24:59,335 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:24:59,335 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:24:59,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:24:59,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:24:59,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:24:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:24:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689064447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:24:59,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:24:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:24:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917869886] [2024-11-28 04:24:59,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:24:59,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:59,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:59,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:59,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:24:59,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 04:24:59,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:24:59,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:24:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:24:59,619 INFO L124 PetriNetUnfolderBase]: 529/1007 cut-off events. [2024-11-28 04:24:59,619 INFO L125 PetriNetUnfolderBase]: For 579/586 co-relation queries the response was YES. [2024-11-28 04:24:59,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1007 events. 529/1007 cut-off events. For 579/586 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5289 event pairs, 403 based on Foata normal form. 8/861 useless extension candidates. Maximal degree in co-relation 2393. Up to 791 conditions per place. [2024-11-28 04:24:59,628 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-11-28 04:24:59,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 241 flow [2024-11-28 04:24:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:24:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-28 04:24:59,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-28 04:24:59,629 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 179 flow. Second operand 4 states and 88 transitions. [2024-11-28 04:24:59,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 241 flow [2024-11-28 04:24:59,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 219 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-28 04:24:59,632 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 177 flow [2024-11-28 04:24:59,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-28 04:24:59,634 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-28 04:24:59,634 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 177 flow [2024-11-28 04:24:59,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 04:24:59,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:24:59,634 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:59,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:24:59,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:24:59,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:24:59,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2030457800, now seen corresponding path program 1 times [2024-11-28 04:24:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271592253] [2024-11-28 04:24:59,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:00,695 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 04:25:00,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271592253] [2024-11-28 04:25:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271592253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:00,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393696821] [2024-11-28 04:25:00,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:00,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:00,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:00,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:00,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:25:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:00,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:25:00,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:00,923 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 04:25:01,641 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 17 treesize of output 9 [2024-11-28 04:25:01,685 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 04:25:01,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:02,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-28 04:25:02,350 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 28 treesize of output 22 [2024-11-28 04:25:02,429 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 04:25:02,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393696821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:02,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:02,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-28 04:25:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349499442] [2024-11-28 04:25:02,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:02,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:25:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:02,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:25:02,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:25:02,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:25:02,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 177 flow. Second operand has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 04:25:02,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:02,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:25:02,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:04,651 INFO L124 PetriNetUnfolderBase]: 1371/2473 cut-off events. [2024-11-28 04:25:04,651 INFO L125 PetriNetUnfolderBase]: For 488/561 co-relation queries the response was YES. [2024-11-28 04:25:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 2473 events. 1371/2473 cut-off events. For 488/561 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14576 event pairs, 345 based on Foata normal form. 73/2275 useless extension candidates. Maximal degree in co-relation 5490. Up to 756 conditions per place. [2024-11-28 04:25:04,668 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 104 selfloop transitions, 21 changer transitions 8/144 dead transitions. [2024-11-28 04:25:04,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 144 transitions, 724 flow [2024-11-28 04:25:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:25:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:25:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 347 transitions. [2024-11-28 04:25:04,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5058309037900874 [2024-11-28 04:25:04,671 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 177 flow. Second operand 14 states and 347 transitions. [2024-11-28 04:25:04,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 144 transitions, 724 flow [2024-11-28 04:25:04,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 144 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:25:04,677 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 251 flow [2024-11-28 04:25:04,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-11-28 04:25:04,678 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-11-28 04:25:04,678 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 251 flow [2024-11-28 04:25:04,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 04:25:04,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:04,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:04,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:25:04,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:25:04,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:04,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1349485553, now seen corresponding path program 1 times [2024-11-28 04:25:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051844997] [2024-11-28 04:25:04,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:05,562 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 04:25:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051844997] [2024-11-28 04:25:05,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051844997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384627949] [2024-11-28 04:25:05,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:05,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:05,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:05,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:05,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:25:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:05,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:25:05,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:05,698 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 04:25:06,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:25:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:06,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:06,709 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 04:25:06,717 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 04:25:06,795 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 04:25:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384627949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:06,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-28 04:25:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986029568] [2024-11-28 04:25:06,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:06,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:25:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:06,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:25:06,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:25:06,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:25:06,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 251 flow. Second operand has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 04:25:06,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:06,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:25:06,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:08,766 INFO L124 PetriNetUnfolderBase]: 1201/2209 cut-off events. [2024-11-28 04:25:08,767 INFO L125 PetriNetUnfolderBase]: For 1315/1382 co-relation queries the response was YES. [2024-11-28 04:25:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 2209 events. 1201/2209 cut-off events. For 1315/1382 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13133 event pairs, 345 based on Foata normal form. 163/2270 useless extension candidates. Maximal degree in co-relation 5529. Up to 756 conditions per place. [2024-11-28 04:25:08,783 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 101 selfloop transitions, 21 changer transitions 8/141 dead transitions. [2024-11-28 04:25:08,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 141 transitions, 764 flow [2024-11-28 04:25:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:25:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:25:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 344 transitions. [2024-11-28 04:25:08,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-11-28 04:25:08,786 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 251 flow. Second operand 14 states and 344 transitions. [2024-11-28 04:25:08,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 141 transitions, 764 flow [2024-11-28 04:25:08,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 141 transitions, 743 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 04:25:08,796 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 268 flow [2024-11-28 04:25:08,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=268, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-11-28 04:25:08,797 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2024-11-28 04:25:08,797 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 268 flow [2024-11-28 04:25:08,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.8) internal successors, (356), 20 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 04:25:08,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:08,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:08,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:25:08,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:25:08,998 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:08,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1713596854, now seen corresponding path program 1 times [2024-11-28 04:25:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678852460] [2024-11-28 04:25:08,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678852460] [2024-11-28 04:25:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678852460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573134690] [2024-11-28 04:25:09,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:09,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:09,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:09,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:25:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:09,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:09,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:25:09,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:25:09,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573134690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:09,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:25:09,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 04:25:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342253337] [2024-11-28 04:25:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:09,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:25:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:09,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:25:09,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:25:09,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:25:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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 04:25:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:25:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:09,905 INFO L124 PetriNetUnfolderBase]: 2478/4566 cut-off events. [2024-11-28 04:25:09,905 INFO L125 PetriNetUnfolderBase]: For 4032/4131 co-relation queries the response was YES. [2024-11-28 04:25:09,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 4566 events. 2478/4566 cut-off events. For 4032/4131 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 30428 event pairs, 597 based on Foata normal form. 131/4517 useless extension candidates. Maximal degree in co-relation 11980. Up to 1458 conditions per place. [2024-11-28 04:25:09,941 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 76 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2024-11-28 04:25:09,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 624 flow [2024-11-28 04:25:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:25:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:25:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-28 04:25:09,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-11-28 04:25:09,943 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 268 flow. Second operand 4 states and 129 transitions. [2024-11-28 04:25:09,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 624 flow [2024-11-28 04:25:09,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 578 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-28 04:25:09,960 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 323 flow [2024-11-28 04:25:09,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-11-28 04:25:09,961 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-11-28 04:25:09,963 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 323 flow [2024-11-28 04:25:09,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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 04:25:09,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:09,963 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:09,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:10,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:25:10,164 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:10,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1732073394, now seen corresponding path program 2 times [2024-11-28 04:25:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945357523] [2024-11-28 04:25:10,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:10,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:10,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:25:10,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:10,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945357523] [2024-11-28 04:25:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945357523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:10,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:25:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956376783] [2024-11-28 04:25:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:10,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:25:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:10,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:25:10,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:10,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:25:10,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 04:25:10,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:10,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:25:10,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:10,995 INFO L124 PetriNetUnfolderBase]: 3067/5647 cut-off events. [2024-11-28 04:25:10,995 INFO L125 PetriNetUnfolderBase]: For 6619/6754 co-relation queries the response was YES. [2024-11-28 04:25:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15438 conditions, 5647 events. 3067/5647 cut-off events. For 6619/6754 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 38059 event pairs, 341 based on Foata normal form. 231/5670 useless extension candidates. Maximal degree in co-relation 15420. Up to 1712 conditions per place. [2024-11-28 04:25:11,090 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 76 selfloop transitions, 12 changer transitions 4/103 dead transitions. [2024-11-28 04:25:11,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 689 flow [2024-11-28 04:25:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:25:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:25:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-28 04:25:11,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6081632653061224 [2024-11-28 04:25:11,093 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 323 flow. Second operand 5 states and 149 transitions. [2024-11-28 04:25:11,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 689 flow [2024-11-28 04:25:11,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 673 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-28 04:25:11,112 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 389 flow [2024-11-28 04:25:11,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-11-28 04:25:11,114 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-11-28 04:25:11,114 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 389 flow [2024-11-28 04:25:11,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 04:25:11,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:11,115 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:11,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:25:11,115 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:11,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 635743407, now seen corresponding path program 2 times [2024-11-28 04:25:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031904981] [2024-11-28 04:25:11,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:11,148 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:11,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:25:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031904981] [2024-11-28 04:25:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031904981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625085796] [2024-11-28 04:25:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:11,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:25:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:11,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:25:11,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:25:11,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-28 04:25:11,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 389 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 04:25:11,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:11,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-28 04:25:11,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:13,067 INFO L124 PetriNetUnfolderBase]: 7924/13166 cut-off events. [2024-11-28 04:25:13,067 INFO L125 PetriNetUnfolderBase]: For 22269/22291 co-relation queries the response was YES. [2024-11-28 04:25:13,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36801 conditions, 13166 events. 7924/13166 cut-off events. For 22269/22291 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 86476 event pairs, 794 based on Foata normal form. 183/13345 useless extension candidates. Maximal degree in co-relation 36780. Up to 5114 conditions per place. [2024-11-28 04:25:13,156 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 120 selfloop transitions, 30 changer transitions 11/169 dead transitions. [2024-11-28 04:25:13,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 169 transitions, 1187 flow [2024-11-28 04:25:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:25:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:25:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-11-28 04:25:13,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-11-28 04:25:13,161 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 389 flow. Second operand 9 states and 242 transitions. [2024-11-28 04:25:13,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 169 transitions, 1187 flow [2024-11-28 04:25:13,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 169 transitions, 1174 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 04:25:13,246 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 716 flow [2024-11-28 04:25:13,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-11-28 04:25:13,247 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-11-28 04:25:13,247 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 716 flow [2024-11-28 04:25:13,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 04:25:13,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:13,247 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:13,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:25:13,248 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:13,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 465788515, now seen corresponding path program 1 times [2024-11-28 04:25:13,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:13,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54077930] [2024-11-28 04:25:13,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54077930] [2024-11-28 04:25:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54077930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:14,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105714308] [2024-11-28 04:25:14,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:14,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:14,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:14,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:14,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:25:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:14,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:25:14,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:25:15,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:15,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:25:15,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-28 04:25:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:25:15,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105714308] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:25:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-11-28 04:25:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863593727] [2024-11-28 04:25:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:15,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:25:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:15,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:25:15,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:25:15,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-11-28 04:25:15,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 04:25:15,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:15,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-11-28 04:25:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:16,397 INFO L124 PetriNetUnfolderBase]: 5156/9554 cut-off events. [2024-11-28 04:25:16,397 INFO L125 PetriNetUnfolderBase]: For 24841/24988 co-relation queries the response was YES. [2024-11-28 04:25:16,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29440 conditions, 9554 events. 5156/9554 cut-off events. For 24841/24988 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 69564 event pairs, 658 based on Foata normal form. 213/9591 useless extension candidates. Maximal degree in co-relation 29414. Up to 2622 conditions per place. [2024-11-28 04:25:16,567 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 72 selfloop transitions, 34 changer transitions 4/128 dead transitions. [2024-11-28 04:25:16,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 1071 flow [2024-11-28 04:25:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:25:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:25:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-28 04:25:16,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 04:25:16,569 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 716 flow. Second operand 5 states and 147 transitions. [2024-11-28 04:25:16,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 1071 flow [2024-11-28 04:25:16,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:25:16,639 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 814 flow [2024-11-28 04:25:16,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-11-28 04:25:16,640 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2024-11-28 04:25:16,640 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 814 flow [2024-11-28 04:25:16,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 04:25:16,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:16,640 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:16,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:25:16,844 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:16,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1993070723, now seen corresponding path program 1 times [2024-11-28 04:25:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138433864] [2024-11-28 04:25:16,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:25:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138433864] [2024-11-28 04:25:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138433864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278387296] [2024-11-28 04:25:17,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:17,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:17,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:17,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:17,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:25:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:17,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:25:17,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:25:17,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:25:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278387296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:17,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:25:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745917456] [2024-11-28 04:25:17,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:17,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:25:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:17,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:25:17,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:25:17,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:25:17,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 814 flow. Second operand has 15 states, 15 states have (on average 18.466666666666665) internal successors, (277), 15 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 04:25:17,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:17,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:25:17,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:18,430 INFO L124 PetriNetUnfolderBase]: 4411/8247 cut-off events. [2024-11-28 04:25:18,430 INFO L125 PetriNetUnfolderBase]: For 32128/32309 co-relation queries the response was YES. [2024-11-28 04:25:18,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26854 conditions, 8247 events. 4411/8247 cut-off events. For 32128/32309 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 58778 event pairs, 2959 based on Foata normal form. 195/8219 useless extension candidates. Maximal degree in co-relation 26826. Up to 5554 conditions per place. [2024-11-28 04:25:18,477 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 49 selfloop transitions, 10 changer transitions 34/111 dead transitions. [2024-11-28 04:25:18,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 983 flow [2024-11-28 04:25:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:25:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:25:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-11-28 04:25:18,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-11-28 04:25:18,480 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 814 flow. Second operand 8 states and 184 transitions. [2024-11-28 04:25:18,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 983 flow [2024-11-28 04:25:18,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 951 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 04:25:18,538 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 613 flow [2024-11-28 04:25:18,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-11-28 04:25:18,539 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 44 predicate places. [2024-11-28 04:25:18,539 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 613 flow [2024-11-28 04:25:18,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.466666666666665) internal successors, (277), 15 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 04:25:18,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:18,540 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:18,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:25:18,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:25:18,740 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:18,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -794811913, now seen corresponding path program 1 times [2024-11-28 04:25:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35608356] [2024-11-28 04:25:18,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35608356] [2024-11-28 04:25:20,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35608356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930280859] [2024-11-28 04:25:20,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:20,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:20,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:20,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:25:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:20,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:25:20,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:21,340 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-28 04:25:21,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-28 04:25:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:21,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:22,017 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-28 04:25:22,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 51 [2024-11-28 04:25:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930280859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:23,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-28 04:25:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877204072] [2024-11-28 04:25:23,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:23,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:25:23,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:23,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:25:23,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:25:23,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:25:23,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 613 flow. Second operand has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 04:25:23,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:23,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:25:23,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:32,209 INFO L124 PetriNetUnfolderBase]: 11890/22578 cut-off events. [2024-11-28 04:25:32,209 INFO L125 PetriNetUnfolderBase]: For 96621/97035 co-relation queries the response was YES. [2024-11-28 04:25:32,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74266 conditions, 22578 events. 11890/22578 cut-off events. For 96621/97035 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 178598 event pairs, 2021 based on Foata normal form. 1616/23947 useless extension candidates. Maximal degree in co-relation 74236. Up to 3837 conditions per place. [2024-11-28 04:25:32,344 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 444 selfloop transitions, 113 changer transitions 12/587 dead transitions. [2024-11-28 04:25:32,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 587 transitions, 4105 flow [2024-11-28 04:25:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 04:25:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-28 04:25:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1252 transitions. [2024-11-28 04:25:32,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5436387320885802 [2024-11-28 04:25:32,356 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 613 flow. Second operand 47 states and 1252 transitions. [2024-11-28 04:25:32,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 587 transitions, 4105 flow [2024-11-28 04:25:32,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 587 transitions, 4030 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-11-28 04:25:32,511 INFO L231 Difference]: Finished difference. Result has 155 places, 177 transitions, 2002 flow [2024-11-28 04:25:32,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2002, PETRI_PLACES=155, PETRI_TRANSITIONS=177} [2024-11-28 04:25:32,512 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 106 predicate places. [2024-11-28 04:25:32,512 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 177 transitions, 2002 flow [2024-11-28 04:25:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 17.62857142857143) internal successors, (617), 35 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 04:25:32,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:32,513 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:32,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:32,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:25:32,714 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:32,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1496575228, now seen corresponding path program 2 times [2024-11-28 04:25:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792060623] [2024-11-28 04:25:32,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:32,749 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:32,749 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:25:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792060623] [2024-11-28 04:25:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792060623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463325228] [2024-11-28 04:25:32,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:32,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:32,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:32,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:25:33,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:33,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:33,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:25:33,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:33,156 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 04:25:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:33,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:34,434 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 78 treesize of output 70 [2024-11-28 04:25:34,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:25:34,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-28 04:25:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463325228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:35,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:35,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 27 [2024-11-28 04:25:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413070347] [2024-11-28 04:25:35,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:35,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:25:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:35,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:25:35,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:25:35,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-28 04:25:35,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 177 transitions, 2002 flow. Second operand has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 04:25:35,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:35,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-28 04:25:35,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:25:42,937 INFO L124 PetriNetUnfolderBase]: 13916/26784 cut-off events. [2024-11-28 04:25:42,937 INFO L125 PetriNetUnfolderBase]: For 357397/358275 co-relation queries the response was YES. [2024-11-28 04:25:43,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106516 conditions, 26784 events. 13916/26784 cut-off events. For 357397/358275 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 220048 event pairs, 1412 based on Foata normal form. 1488/27932 useless extension candidates. Maximal degree in co-relation 106460. Up to 6855 conditions per place. [2024-11-28 04:25:43,143 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 465 selfloop transitions, 115 changer transitions 32/630 dead transitions. [2024-11-28 04:25:43,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 630 transitions, 5520 flow [2024-11-28 04:25:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:25:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 04:25:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1182 transitions. [2024-11-28 04:25:43,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244010647737356 [2024-11-28 04:25:43,146 INFO L175 Difference]: Start difference. First operand has 155 places, 177 transitions, 2002 flow. Second operand 46 states and 1182 transitions. [2024-11-28 04:25:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 630 transitions, 5520 flow [2024-11-28 04:25:45,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 630 transitions, 4926 flow, removed 240 selfloop flow, removed 12 redundant places. [2024-11-28 04:25:45,451 INFO L231 Difference]: Finished difference. Result has 203 places, 228 transitions, 2734 flow [2024-11-28 04:25:45,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2734, PETRI_PLACES=203, PETRI_TRANSITIONS=228} [2024-11-28 04:25:45,452 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 154 predicate places. [2024-11-28 04:25:45,452 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 228 transitions, 2734 flow [2024-11-28 04:25:45,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.896551724137932) internal successors, (519), 29 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 04:25:45,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:25:45,453 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:45,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:25:45,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:25:45,653 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:25:45,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1061601319, now seen corresponding path program 2 times [2024-11-28 04:25:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671845949] [2024-11-28 04:25:45,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:45,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:45,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:47,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:47,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671845949] [2024-11-28 04:25:47,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671845949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:47,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019664908] [2024-11-28 04:25:47,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:47,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:47,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:25:47,220 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:47,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:47,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:25:47,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:47,427 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 04:25:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:48,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:49,731 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 76 treesize of output 68 [2024-11-28 04:25:49,774 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2024-11-28 04:25:49,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 121 [2024-11-28 04:25:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:50,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019664908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:50,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:50,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 36 [2024-11-28 04:25:50,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650532606] [2024-11-28 04:25:50,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:50,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:25:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:50,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:25:50,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:25:51,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-28 04:25:51,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 228 transitions, 2734 flow. Second operand has 38 states, 38 states have (on average 14.842105263157896) internal successors, (564), 38 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 04:25:51,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:25:51,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-28 04:25:51,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:32,400 INFO L124 PetriNetUnfolderBase]: 71097/116868 cut-off events. [2024-11-28 04:26:32,400 INFO L125 PetriNetUnfolderBase]: For 2347385/2348006 co-relation queries the response was YES. [2024-11-28 04:26:33,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502564 conditions, 116868 events. 71097/116868 cut-off events. For 2347385/2348006 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 943125 event pairs, 5628 based on Foata normal form. 4555/121173 useless extension candidates. Maximal degree in co-relation 502493. Up to 18404 conditions per place. [2024-11-28 04:26:33,962 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 1444 selfloop transitions, 1159 changer transitions 82/2693 dead transitions. [2024-11-28 04:26:33,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 2693 transitions, 26490 flow [2024-11-28 04:26:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-28 04:26:33,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2024-11-28 04:26:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 3264 transitions. [2024-11-28 04:26:33,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5008439466011969 [2024-11-28 04:26:33,970 INFO L175 Difference]: Start difference. First operand has 203 places, 228 transitions, 2734 flow. Second operand 133 states and 3264 transitions. [2024-11-28 04:26:33,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 2693 transitions, 26490 flow [2024-11-28 04:27:40,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 2693 transitions, 25177 flow, removed 460 selfloop flow, removed 22 redundant places. [2024-11-28 04:27:40,689 INFO L231 Difference]: Finished difference. Result has 388 places, 1408 transitions, 17945 flow [2024-11-28 04:27:40,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=133, PETRI_FLOW=17945, PETRI_PLACES=388, PETRI_TRANSITIONS=1408} [2024-11-28 04:27:40,689 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 339 predicate places. [2024-11-28 04:27:40,689 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 1408 transitions, 17945 flow [2024-11-28 04:27:40,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 14.842105263157896) internal successors, (564), 38 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 04:27:40,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:27:40,690 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:27:40,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:27:40,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:40,891 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:27:40,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:27:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -763057494, now seen corresponding path program 3 times [2024-11-28 04:27:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:27:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462915811] [2024-11-28 04:27:40,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:27:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:27:40,918 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:27:40,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:27:41,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462915811] [2024-11-28 04:27:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462915811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:27:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470504289] [2024-11-28 04:27:41,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:27:41,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:27:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:27:41,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:27:41,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29fce2a-f4a9-40a8-bd89-cd6374696c83/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:27:41,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:27:41,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:27:41,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:27:41,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:27:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:27:41,484 INFO L312 TraceCheckSpWp]: Computing backward predicates...