./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.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_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/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_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/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_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:47:51,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:47:51,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:47:51,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:47:51,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:47:51,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:47:51,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:47:51,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:47:51,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:47:51,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:47:51,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:47:51,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:47:51,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:47:51,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:47:51,950 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:47:51,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:47:51,951 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:47:51,952 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:51,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:51,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:51,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:47:51,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:47:51,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:47:51,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:47:51,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:47:51,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:47:51,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:47:51,954 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_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/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 -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-28 04:47:52,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:47:52,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:47:52,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:47:52,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:47:52,283 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:47:52,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-28 04:47:55,460 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/data/ee964107c/f6dcdddee7cf44c38cf44bc9f4cc2b20/FLAGdca2dedd8 [2024-11-28 04:47:55,811 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:47:55,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-28 04:47:55,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/data/ee964107c/f6dcdddee7cf44c38cf44bc9f4cc2b20/FLAGdca2dedd8 [2024-11-28 04:47:55,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/data/ee964107c/f6dcdddee7cf44c38cf44bc9f4cc2b20 [2024-11-28 04:47:55,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:47:55,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:47:55,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:55,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:47:55,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:47:55,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:55" (1/1) ... [2024-11-28 04:47:55,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50245e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:55, skipping insertion in model container [2024-11-28 04:47:55,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:55" (1/1) ... [2024-11-28 04:47:55,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:47:56,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:56,138 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:47:56,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:56,190 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:47:56,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56 WrapperNode [2024-11-28 04:47:56,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:56,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:56,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:47:56,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:47:56,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,257 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-28 04:47:56,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:56,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:47:56,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:47:56,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:47:56,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,294 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 04:47:56,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,307 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:47:56,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:47:56,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:47:56,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:47:56,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (1/1) ... [2024-11-28 04:47:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:56,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:47:56,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:47:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:47:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:47:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:47:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:47:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:47:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:47:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:47:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:47:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:47:56,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:47:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:47:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:47:56,422 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 04:47:56,573 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:47:56,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:47:57,382 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:47:57,382 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:47:58,104 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:47:58,107 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:47:58,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:58 BoogieIcfgContainer [2024-11-28 04:47:58,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:47:58,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:47:58,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:47:58,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:47:58,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:47:55" (1/3) ... [2024-11-28 04:47:58,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4edace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:58, skipping insertion in model container [2024-11-28 04:47:58,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:56" (2/3) ... [2024-11-28 04:47:58,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4edace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:58, skipping insertion in model container [2024-11-28 04:47:58,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:58" (3/3) ... [2024-11-28 04:47:58,124 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-28 04:47:58,144 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:47:58,146 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-1.wvr-bad.c that has 4 procedures, 71 locations, 1 initial locations, 6 loop locations, and 22 error locations. [2024-11-28 04:47:58,146 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:47:58,266 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:47:58,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 195 flow [2024-11-28 04:47:58,390 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2024-11-28 04:47:58,393 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:47:58,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 17/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2024-11-28 04:47:58,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 195 flow [2024-11-28 04:47:58,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 82 transitions, 179 flow [2024-11-28 04:47:58,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:58,431 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;@1c6954f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:58,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-28 04:47:58,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:47:58,438 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:47:58,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:47:58,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:58,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:47:58,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:47:58,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1084922, now seen corresponding path program 1 times [2024-11-28 04:47:58,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:58,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019591095] [2024-11-28 04:47:58,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:58,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:58,849 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 04:47:58,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:58,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019591095] [2024-11-28 04:47:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019591095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:58,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:58,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:47:58,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293910973] [2024-11-28 04:47:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:58,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:58,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:58,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:58,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-28 04:47:58,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 04:47:58,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:58,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-28 04:47:58,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:00,442 INFO L124 PetriNetUnfolderBase]: 3370/4957 cut-off events. [2024-11-28 04:48:00,442 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-28 04:48:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 4957 events. 3370/4957 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27905 event pairs, 2182 based on Foata normal form. 3/3096 useless extension candidates. Maximal degree in co-relation 9006. Up to 4308 conditions per place. [2024-11-28 04:48:00,528 INFO L140 encePairwiseOnDemand]: 60/87 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-11-28 04:48:00,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 297 flow [2024-11-28 04:48:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:48:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:48:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-28 04:48:00,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-11-28 04:48:00,548 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 179 flow. Second operand 4 states and 166 transitions. [2024-11-28 04:48:00,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 297 flow [2024-11-28 04:48:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 288 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:48:00,570 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 236 flow [2024-11-28 04:48:00,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2024-11-28 04:48:00,580 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-28 04:48:00,581 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 236 flow [2024-11-28 04:48:00,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 04:48:00,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:00,581 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:48:00,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:48:00,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2037707548, now seen corresponding path program 1 times [2024-11-28 04:48:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400739020] [2024-11-28 04:48:00,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400739020] [2024-11-28 04:48:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400739020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722982516] [2024-11-28 04:48:00,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:00,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:00,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:00,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:48:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:00,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:48:00,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:01,037 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:01,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722982516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:01,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:01,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:48:01,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217971888] [2024-11-28 04:48:01,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:01,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:48:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:01,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:48:01,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:48:01,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-28 04:48:01,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 04:48:01,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:01,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-28 04:48:01,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:02,194 INFO L124 PetriNetUnfolderBase]: 3370/4954 cut-off events. [2024-11-28 04:48:02,194 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-28 04:48:02,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9439 conditions, 4954 events. 3370/4954 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27935 event pairs, 2182 based on Foata normal form. 3/3098 useless extension candidates. Maximal degree in co-relation 9366. Up to 4293 conditions per place. [2024-11-28 04:48:02,245 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-11-28 04:48:02,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 340 flow [2024-11-28 04:48:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:48:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:48:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-28 04:48:02,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36973180076628354 [2024-11-28 04:48:02,251 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 236 flow. Second operand 6 states and 193 transitions. [2024-11-28 04:48:02,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 340 flow [2024-11-28 04:48:02,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:48:02,258 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 258 flow [2024-11-28 04:48:02,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-11-28 04:48:02,262 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-11-28 04:48:02,265 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 258 flow [2024-11-28 04:48:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 04:48:02,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:02,266 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:48:02,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:48:02,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 04:48:02,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:02,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1255576581, now seen corresponding path program 1 times [2024-11-28 04:48:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532575299] [2024-11-28 04:48:02,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:02,751 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 04:48:02,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532575299] [2024-11-28 04:48:02,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532575299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369058649] [2024-11-28 04:48:02,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:02,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:02,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:48:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:02,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:48:02,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:02,903 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 04:48:02,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:02,976 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 04:48:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369058649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:02,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:48:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608770750] [2024-11-28 04:48:02,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:02,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:48:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:02,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:48:02,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:48:03,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-28 04:48:03,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 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 04:48:03,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:03,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-28 04:48:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:04,335 INFO L124 PetriNetUnfolderBase]: 3379/4990 cut-off events. [2024-11-28 04:48:04,335 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-11-28 04:48:04,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9580 conditions, 4990 events. 3379/4990 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 28314 event pairs, 2182 based on Foata normal form. 9/3140 useless extension candidates. Maximal degree in co-relation 9368. Up to 4308 conditions per place. [2024-11-28 04:48:04,386 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-11-28 04:48:04,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 602 flow [2024-11-28 04:48:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:48:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:48:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-11-28 04:48:04,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36091954022988504 [2024-11-28 04:48:04,393 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 258 flow. Second operand 10 states and 314 transitions. [2024-11-28 04:48:04,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 602 flow [2024-11-28 04:48:04,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 519 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 04:48:04,400 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 473 flow [2024-11-28 04:48:04,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2024-11-28 04:48:04,401 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-28 04:48:04,401 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 473 flow [2024-11-28 04:48:04,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 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 04:48:04,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:04,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:04,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:48:04,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:04,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:04,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 543862992, now seen corresponding path program 1 times [2024-11-28 04:48:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55375840] [2024-11-28 04:48:04,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:04,706 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 04:48:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55375840] [2024-11-28 04:48:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55375840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:48:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227506606] [2024-11-28 04:48:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:04,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:04,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:04,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:04,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:04,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:04,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:05,797 INFO L124 PetriNetUnfolderBase]: 5838/8627 cut-off events. [2024-11-28 04:48:05,798 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-28 04:48:05,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16513 conditions, 8627 events. 5838/8627 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 51919 event pairs, 1884 based on Foata normal form. 214/5774 useless extension candidates. Maximal degree in co-relation 16415. Up to 4473 conditions per place. [2024-11-28 04:48:05,856 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 108 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-28 04:48:05,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 757 flow [2024-11-28 04:48:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-28 04:48:05,858 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-28 04:48:05,858 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 473 flow. Second operand 3 states and 163 transitions. [2024-11-28 04:48:05,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 757 flow [2024-11-28 04:48:05,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 720 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 04:48:05,867 INFO L231 Difference]: Finished difference. Result has 78 places, 106 transitions, 461 flow [2024-11-28 04:48:05,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=78, PETRI_TRANSITIONS=106} [2024-11-28 04:48:05,869 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-28 04:48:05,870 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 106 transitions, 461 flow [2024-11-28 04:48:05,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:05,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:05,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:05,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:48:05,871 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:05,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:05,872 INFO L85 PathProgramCache]: Analyzing trace with hash -320114292, now seen corresponding path program 1 times [2024-11-28 04:48:05,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:05,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498919385] [2024-11-28 04:48:05,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:05,955 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 04:48:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498919385] [2024-11-28 04:48:05,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498919385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:05,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:05,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154193731] [2024-11-28 04:48:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:05,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:05,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:05,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:05,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-28 04:48:05,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 106 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 04:48:05,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:05,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-28 04:48:05,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:07,630 INFO L124 PetriNetUnfolderBase]: 8495/12342 cut-off events. [2024-11-28 04:48:07,630 INFO L125 PetriNetUnfolderBase]: For 953/965 co-relation queries the response was YES. [2024-11-28 04:48:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25452 conditions, 12342 events. 8495/12342 cut-off events. For 953/965 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 70332 event pairs, 3181 based on Foata normal form. 0/9349 useless extension candidates. Maximal degree in co-relation 25357. Up to 5816 conditions per place. [2024-11-28 04:48:07,716 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-28 04:48:07,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 751 flow [2024-11-28 04:48:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-28 04:48:07,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-28 04:48:07,718 INFO L175 Difference]: Start difference. First operand has 78 places, 106 transitions, 461 flow. Second operand 3 states and 147 transitions. [2024-11-28 04:48:07,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 751 flow [2024-11-28 04:48:07,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:07,723 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 480 flow [2024-11-28 04:48:07,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2024-11-28 04:48:07,724 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-28 04:48:07,724 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 480 flow [2024-11-28 04:48:07,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 04:48:07,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:07,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:07,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:48:07,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:07,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 581136480, now seen corresponding path program 1 times [2024-11-28 04:48:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973626366] [2024-11-28 04:48:07,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:07,840 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 04:48:07,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973626366] [2024-11-28 04:48:07,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973626366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:07,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:07,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665203036] [2024-11-28 04:48:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:07,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:07,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:07,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:07,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:07,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:07,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:48:07,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:07,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:09,326 INFO L124 PetriNetUnfolderBase]: 10419/15911 cut-off events. [2024-11-28 04:48:09,327 INFO L125 PetriNetUnfolderBase]: For 3258/3366 co-relation queries the response was YES. [2024-11-28 04:48:09,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33888 conditions, 15911 events. 10419/15911 cut-off events. For 3258/3366 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 99569 event pairs, 4177 based on Foata normal form. 315/12544 useless extension candidates. Maximal degree in co-relation 33792. Up to 7196 conditions per place. [2024-11-28 04:48:09,421 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 113 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-28 04:48:09,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 796 flow [2024-11-28 04:48:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-28 04:48:09,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-28 04:48:09,423 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 480 flow. Second operand 3 states and 163 transitions. [2024-11-28 04:48:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 796 flow [2024-11-28 04:48:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:48:09,432 INFO L231 Difference]: Finished difference. Result has 82 places, 108 transitions, 486 flow [2024-11-28 04:48:09,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=82, PETRI_TRANSITIONS=108} [2024-11-28 04:48:09,433 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-28 04:48:09,433 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 486 flow [2024-11-28 04:48:09,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 04:48:09,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:09,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:09,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:48:09,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:09,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 835363861, now seen corresponding path program 1 times [2024-11-28 04:48:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967122508] [2024-11-28 04:48:09,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:09,537 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 04:48:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:09,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967122508] [2024-11-28 04:48:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967122508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:09,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463429507] [2024-11-28 04:48:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:09,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:09,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:09,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:09,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-28 04:48:09,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 108 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 04:48:09,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:09,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-28 04:48:09,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:11,645 INFO L124 PetriNetUnfolderBase]: 14063/20642 cut-off events. [2024-11-28 04:48:11,646 INFO L125 PetriNetUnfolderBase]: For 3137/3361 co-relation queries the response was YES. [2024-11-28 04:48:11,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43484 conditions, 20642 events. 14063/20642 cut-off events. For 3137/3361 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 124240 event pairs, 6937 based on Foata normal form. 0/16000 useless extension candidates. Maximal degree in co-relation 43387. Up to 12185 conditions per place. [2024-11-28 04:48:11,753 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-28 04:48:11,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 786 flow [2024-11-28 04:48:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-28 04:48:11,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-28 04:48:11,755 INFO L175 Difference]: Start difference. First operand has 82 places, 108 transitions, 486 flow. Second operand 3 states and 153 transitions. [2024-11-28 04:48:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 786 flow [2024-11-28 04:48:11,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:11,761 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 502 flow [2024-11-28 04:48:11,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-11-28 04:48:11,763 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-28 04:48:11,763 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 502 flow [2024-11-28 04:48:11,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 04:48:11,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:11,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:11,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:48:11,764 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:11,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2109061459, now seen corresponding path program 1 times [2024-11-28 04:48:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:11,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748589620] [2024-11-28 04:48:11,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:11,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:11,931 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 04:48:11,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:11,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748589620] [2024-11-28 04:48:11,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748589620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:11,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:11,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:11,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399232182] [2024-11-28 04:48:11,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:11,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:48:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:11,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:48:11,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:11,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:11,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 04:48:11,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:11,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:11,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:13,664 INFO L124 PetriNetUnfolderBase]: 12513/19151 cut-off events. [2024-11-28 04:48:13,664 INFO L125 PetriNetUnfolderBase]: For 6019/6411 co-relation queries the response was YES. [2024-11-28 04:48:13,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41688 conditions, 19151 events. 12513/19151 cut-off events. For 6019/6411 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 120035 event pairs, 9361 based on Foata normal form. 112/14998 useless extension candidates. Maximal degree in co-relation 41533. Up to 15248 conditions per place. [2024-11-28 04:48:13,743 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 124 selfloop transitions, 10 changer transitions 2/160 dead transitions. [2024-11-28 04:48:13,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 1013 flow [2024-11-28 04:48:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:48:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:48:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-28 04:48:13,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-28 04:48:13,745 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 502 flow. Second operand 5 states and 225 transitions. [2024-11-28 04:48:13,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 1013 flow [2024-11-28 04:48:13,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 1005 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:48:13,760 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 590 flow [2024-11-28 04:48:13,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-11-28 04:48:13,764 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2024-11-28 04:48:13,764 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 590 flow [2024-11-28 04:48:13,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 04:48:13,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:13,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:13,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:48:13,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:13,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -956393609, now seen corresponding path program 1 times [2024-11-28 04:48:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:13,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147419533] [2024-11-28 04:48:13,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:13,837 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 04:48:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147419533] [2024-11-28 04:48:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147419533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:13,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:13,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773841959] [2024-11-28 04:48:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:13,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:13,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:13,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:13,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-28 04:48:13,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 04:48:13,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:13,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-28 04:48:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:16,876 INFO L124 PetriNetUnfolderBase]: 23803/34699 cut-off events. [2024-11-28 04:48:16,876 INFO L125 PetriNetUnfolderBase]: For 9726/10540 co-relation queries the response was YES. [2024-11-28 04:48:16,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76615 conditions, 34699 events. 23803/34699 cut-off events. For 9726/10540 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 216753 event pairs, 13589 based on Foata normal form. 0/26671 useless extension candidates. Maximal degree in co-relation 76455. Up to 16287 conditions per place. [2024-11-28 04:48:17,035 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 117 selfloop transitions, 5 changer transitions 1/144 dead transitions. [2024-11-28 04:48:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 922 flow [2024-11-28 04:48:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-28 04:48:17,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-28 04:48:17,036 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 590 flow. Second operand 3 states and 153 transitions. [2024-11-28 04:48:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 922 flow [2024-11-28 04:48:17,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 144 transitions, 918 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:17,050 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 603 flow [2024-11-28 04:48:17,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=603, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2024-11-28 04:48:17,051 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2024-11-28 04:48:17,051 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 603 flow [2024-11-28 04:48:17,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 04:48:17,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:17,052 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:48:17,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:48:17,052 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:17,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1007503825, now seen corresponding path program 2 times [2024-11-28 04:48:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:17,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960277699] [2024-11-28 04:48:17,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:48:17,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:17,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:48:17,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:17,123 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 04:48:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960277699] [2024-11-28 04:48:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960277699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450583281] [2024-11-28 04:48:17,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:48:17,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:17,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:17,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:48:17,217 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:48:17,217 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:17,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:48:17,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:17,264 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 04:48:17,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:17,304 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 04:48:17,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450583281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:17,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:17,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:48:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678577149] [2024-11-28 04:48:17,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:17,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:48:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:17,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:48:17,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:17,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-28 04:48:17,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 04:48:17,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:17,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-28 04:48:17,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:20,096 INFO L124 PetriNetUnfolderBase]: 18814/28865 cut-off events. [2024-11-28 04:48:20,097 INFO L125 PetriNetUnfolderBase]: For 12426/13544 co-relation queries the response was YES. [2024-11-28 04:48:20,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65278 conditions, 28865 events. 18814/28865 cut-off events. For 12426/13544 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 197209 event pairs, 15031 based on Foata normal form. 5/22944 useless extension candidates. Maximal degree in co-relation 65142. Up to 24909 conditions per place. [2024-11-28 04:48:20,238 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 47 selfloop transitions, 36 changer transitions 7/112 dead transitions. [2024-11-28 04:48:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 753 flow [2024-11-28 04:48:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:48:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:48:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-28 04:48:20,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3936781609195402 [2024-11-28 04:48:20,239 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 603 flow. Second operand 4 states and 137 transitions. [2024-11-28 04:48:20,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 753 flow [2024-11-28 04:48:20,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 711 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 04:48:20,255 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 538 flow [2024-11-28 04:48:20,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=538, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-11-28 04:48:20,256 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-28 04:48:20,256 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 538 flow [2024-11-28 04:48:20,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 04:48:20,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:20,257 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:20,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:48:20,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:20,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:20,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1632282903, now seen corresponding path program 1 times [2024-11-28 04:48:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911123766] [2024-11-28 04:48:20,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:20,839 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 04:48:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911123766] [2024-11-28 04:48:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911123766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511237650] [2024-11-28 04:48:20,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:20,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:20,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:20,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:20,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:48:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:20,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:48:20,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:21,003 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 04:48:21,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511237650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-28 04:48:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53334015] [2024-11-28 04:48:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:21,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:21,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:21,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:48:21,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:21,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 04:48:21,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:21,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:22,700 INFO L124 PetriNetUnfolderBase]: 13824/21468 cut-off events. [2024-11-28 04:48:22,700 INFO L125 PetriNetUnfolderBase]: For 7750/8662 co-relation queries the response was YES. [2024-11-28 04:48:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46828 conditions, 21468 events. 13824/21468 cut-off events. For 7750/8662 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 143307 event pairs, 10758 based on Foata normal form. 1221/18133 useless extension candidates. Maximal degree in co-relation 46582. Up to 18121 conditions per place. [2024-11-28 04:48:22,801 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2024-11-28 04:48:22,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 682 flow [2024-11-28 04:48:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-28 04:48:22,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2024-11-28 04:48:22,803 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 538 flow. Second operand 3 states and 130 transitions. [2024-11-28 04:48:22,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 682 flow [2024-11-28 04:48:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 594 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-28 04:48:22,814 INFO L231 Difference]: Finished difference. Result has 77 places, 101 transitions, 438 flow [2024-11-28 04:48:22,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=77, PETRI_TRANSITIONS=101} [2024-11-28 04:48:22,815 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-28 04:48:22,816 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 438 flow [2024-11-28 04:48:22,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 04:48:22,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:22,816 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:22,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:48:23,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:23,020 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:23,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1441974073, now seen corresponding path program 1 times [2024-11-28 04:48:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394928598] [2024-11-28 04:48:23,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:48:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394928598] [2024-11-28 04:48:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394928598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:48:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461644395] [2024-11-28 04:48:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:23,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:23,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:23,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:23,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:23,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 101 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 04:48:23,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:23,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:25,377 INFO L124 PetriNetUnfolderBase]: 18120/27226 cut-off events. [2024-11-28 04:48:25,377 INFO L125 PetriNetUnfolderBase]: For 10692/12510 co-relation queries the response was YES. [2024-11-28 04:48:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61148 conditions, 27226 events. 18120/27226 cut-off events. For 10692/12510 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 171056 event pairs, 6045 based on Foata normal form. 566/22681 useless extension candidates. Maximal degree in co-relation 61128. Up to 17545 conditions per place. [2024-11-28 04:48:25,489 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 103 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-28 04:48:25,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 728 flow [2024-11-28 04:48:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-28 04:48:25,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-28 04:48:25,636 INFO L175 Difference]: Start difference. First operand has 77 places, 101 transitions, 438 flow. Second operand 3 states and 153 transitions. [2024-11-28 04:48:25,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 728 flow [2024-11-28 04:48:25,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:25,644 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 453 flow [2024-11-28 04:48:25,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2024-11-28 04:48:25,647 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-28 04:48:25,647 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 453 flow [2024-11-28 04:48:25,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 04:48:25,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:25,647 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:25,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:48:25,648 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:25,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1455296145, now seen corresponding path program 1 times [2024-11-28 04:48:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:25,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267561149] [2024-11-28 04:48:25,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:25,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:48:25,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267561149] [2024-11-28 04:48:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267561149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:25,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:25,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:48:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660419349] [2024-11-28 04:48:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:25,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:48:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:25,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:48:25,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:25,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:25,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 04:48:25,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:25,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:25,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:29,358 INFO L124 PetriNetUnfolderBase]: 23693/36204 cut-off events. [2024-11-28 04:48:29,359 INFO L125 PetriNetUnfolderBase]: For 14911/16958 co-relation queries the response was YES. [2024-11-28 04:48:29,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82238 conditions, 36204 events. 23693/36204 cut-off events. For 14911/16958 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 243049 event pairs, 18637 based on Foata normal form. 320/29486 useless extension candidates. Maximal degree in co-relation 82216. Up to 24052 conditions per place. [2024-11-28 04:48:29,512 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 95 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2024-11-28 04:48:29,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 764 flow [2024-11-28 04:48:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:48:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:48:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-11-28 04:48:29,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-11-28 04:48:29,514 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 453 flow. Second operand 5 states and 219 transitions. [2024-11-28 04:48:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 764 flow [2024-11-28 04:48:29,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:29,524 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 494 flow [2024-11-28 04:48:29,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-28 04:48:29,525 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2024-11-28 04:48:29,526 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 494 flow [2024-11-28 04:48:29,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 04:48:29,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:29,526 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:29,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:48:29,527 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:29,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1619811796, now seen corresponding path program 1 times [2024-11-28 04:48:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:29,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745461945] [2024-11-28 04:48:29,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:48:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745461945] [2024-11-28 04:48:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745461945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:48:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590415832] [2024-11-28 04:48:29,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:29,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:29,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:29,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:29,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-28 04:48:29,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:29,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:29,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-28 04:48:29,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:33,175 INFO L124 PetriNetUnfolderBase]: 26991/38864 cut-off events. [2024-11-28 04:48:33,175 INFO L125 PetriNetUnfolderBase]: For 17381/19544 co-relation queries the response was YES. [2024-11-28 04:48:33,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91720 conditions, 38864 events. 26991/38864 cut-off events. For 17381/19544 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 226057 event pairs, 14081 based on Foata normal form. 452/33490 useless extension candidates. Maximal degree in co-relation 91696. Up to 24066 conditions per place. [2024-11-28 04:48:33,334 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 103 selfloop transitions, 4 changer transitions 1/124 dead transitions. [2024-11-28 04:48:33,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 776 flow [2024-11-28 04:48:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-28 04:48:33,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-28 04:48:33,336 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 494 flow. Second operand 3 states and 140 transitions. [2024-11-28 04:48:33,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 776 flow [2024-11-28 04:48:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 759 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 04:48:33,344 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 494 flow [2024-11-28 04:48:33,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2024-11-28 04:48:33,345 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-28 04:48:33,345 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 494 flow [2024-11-28 04:48:33,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:33,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:33,345 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:33,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:48:33,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:33,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1783630572, now seen corresponding path program 1 times [2024-11-28 04:48:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984197280] [2024-11-28 04:48:33,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:48:33,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:33,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984197280] [2024-11-28 04:48:33,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984197280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:33,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838612294] [2024-11-28 04:48:33,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:33,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:33,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:33,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:33,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:48:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:33,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:48:33,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:48:33,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838612294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 04:48:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173703414] [2024-11-28 04:48:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:33,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:33,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:33,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:48:33,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:33,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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 04:48:33,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:33,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:33,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:35,823 INFO L124 PetriNetUnfolderBase]: 16299/24740 cut-off events. [2024-11-28 04:48:35,823 INFO L125 PetriNetUnfolderBase]: For 16488/18281 co-relation queries the response was YES. [2024-11-28 04:48:35,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58687 conditions, 24740 events. 16299/24740 cut-off events. For 16488/18281 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 155074 event pairs, 12973 based on Foata normal form. 1360/21570 useless extension candidates. Maximal degree in co-relation 58663. Up to 21771 conditions per place. [2024-11-28 04:48:35,936 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 76 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-11-28 04:48:35,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 640 flow [2024-11-28 04:48:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-28 04:48:35,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-11-28 04:48:35,938 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 494 flow. Second operand 3 states and 126 transitions. [2024-11-28 04:48:35,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 640 flow [2024-11-28 04:48:35,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 620 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 04:48:35,948 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 468 flow [2024-11-28 04:48:35,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2024-11-28 04:48:35,949 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-28 04:48:35,949 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 468 flow [2024-11-28 04:48:35,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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 04:48:35,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:35,950 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:35,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:48:36,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:48:36,150 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:36,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1224529247, now seen corresponding path program 1 times [2024-11-28 04:48:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:36,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845268120] [2024-11-28 04:48:36,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:48:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845268120] [2024-11-28 04:48:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845268120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:48:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113465979] [2024-11-28 04:48:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:36,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:36,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:36,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:48:36,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-28 04:48:36,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 04:48:36,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:36,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-28 04:48:36,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:40,287 INFO L124 PetriNetUnfolderBase]: 25849/37649 cut-off events. [2024-11-28 04:48:40,287 INFO L125 PetriNetUnfolderBase]: For 20135/23093 co-relation queries the response was YES. [2024-11-28 04:48:40,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89734 conditions, 37649 events. 25849/37649 cut-off events. For 20135/23093 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 221516 event pairs, 16025 based on Foata normal form. 640/32464 useless extension candidates. Maximal degree in co-relation 89710. Up to 27157 conditions per place. [2024-11-28 04:48:40,453 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-28 04:48:40,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 740 flow [2024-11-28 04:48:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:48:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-28 04:48:40,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-28 04:48:40,454 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 468 flow. Second operand 3 states and 138 transitions. [2024-11-28 04:48:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 740 flow [2024-11-28 04:48:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:48:40,463 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 493 flow [2024-11-28 04:48:40,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-11-28 04:48:40,463 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-28 04:48:40,464 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 493 flow [2024-11-28 04:48:40,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 04:48:40,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:40,464 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:48:40,464 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:40,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1241968540, now seen corresponding path program 1 times [2024-11-28 04:48:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840095481] [2024-11-28 04:48:40,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:48:40,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840095481] [2024-11-28 04:48:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840095481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:40,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:48:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248009479] [2024-11-28 04:48:40,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:40,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:48:40,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:40,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:48:40,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:40,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-28 04:48:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-28 04:48:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:48:44,737 INFO L124 PetriNetUnfolderBase]: 27356/42140 cut-off events. [2024-11-28 04:48:44,737 INFO L125 PetriNetUnfolderBase]: For 24361/27259 co-relation queries the response was YES. [2024-11-28 04:48:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99406 conditions, 42140 events. 27356/42140 cut-off events. For 24361/27259 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 276799 event pairs, 22206 based on Foata normal form. 120/34617 useless extension candidates. Maximal degree in co-relation 99381. Up to 27867 conditions per place. [2024-11-28 04:48:44,916 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 70 selfloop transitions, 6 changer transitions 43/143 dead transitions. [2024-11-28 04:48:44,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 143 transitions, 915 flow [2024-11-28 04:48:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:48:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:48:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-28 04:48:44,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-28 04:48:44,918 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 493 flow. Second operand 4 states and 186 transitions. [2024-11-28 04:48:44,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 143 transitions, 915 flow [2024-11-28 04:48:44,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 143 transitions, 901 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:48:44,940 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 502 flow [2024-11-28 04:48:44,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-11-28 04:48:44,941 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2024-11-28 04:48:44,941 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 502 flow [2024-11-28 04:48:44,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:44,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:48:44,941 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:44,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:48:44,942 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:48:44,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1868296798, now seen corresponding path program 1 times [2024-11-28 04:48:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122035595] [2024-11-28 04:48:44,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:48:45,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:45,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122035595] [2024-11-28 04:48:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122035595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:45,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093753031] [2024-11-28 04:48:45,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:45,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:45,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:45,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73e5afd7-9c0f-448d-b9d7-ccab39f89f9a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:48:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:45,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:48:45,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:48:45,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:48:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093753031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:46,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 11 [2024-11-28 04:48:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951034664] [2024-11-28 04:48:46,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:46,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:48:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:46,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:48:46,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:48:46,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-28 04:48:46,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 502 flow. Second operand has 12 states, 12 states have (on average 28.333333333333332) internal successors, (340), 12 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 04:48:46,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:48:46,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-28 04:48:46,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand