./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/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_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC --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-6497de0 [2024-11-23 23:37:28,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:37:28,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 23:37:28,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:37:28,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:37:28,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:37:28,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:37:28,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:37:28,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:37:28,650 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:37:28,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:37:28,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:37:28,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:37:28,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:37:28,651 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:37:28,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:37:28,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:37:28,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:37:28,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:37:28,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:37:28,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:37:28,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:37:28,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:37:28,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:37:28,653 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:37:28,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:37:28,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:37:28,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:37:28,654 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:37:28,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:37:28,654 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:37:28,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:37:28,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:37:28,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:37:28,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:28,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:37:28,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:37:28,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:37:28,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:37:28,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:28,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:37:28,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:37:28,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:37:28,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:37:28,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:37:28,658 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_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2024-11-23 23:37:29,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:37:29,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:37:29,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:37:29,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:37:29,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:37:29,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-23 23:37:32,606 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/data/e41e4b4a1/d81c2c60a17c4891954a2aa0d1e12595/FLAGdbedd5395 [2024-11-23 23:37:32,966 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:37:32,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-23 23:37:32,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/data/e41e4b4a1/d81c2c60a17c4891954a2aa0d1e12595/FLAGdbedd5395 [2024-11-23 23:37:33,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/data/e41e4b4a1/d81c2c60a17c4891954a2aa0d1e12595 [2024-11-23 23:37:33,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:37:33,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:37:33,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:37:33,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:37:33,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:37:33,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43594979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33, skipping insertion in model container [2024-11-23 23:37:33,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,103 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:37:33,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:37:33,367 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:37:33,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:37:33,437 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:37:33,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33 WrapperNode [2024-11-23 23:37:33,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:37:33,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:37:33,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:37:33,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:37:33,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,499 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-23 23:37:33,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:37:33,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:37:33,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:37:33,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:37:33,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,537 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]. [2024-11-23 23:37:33,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,550 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:37:33,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:37:33,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:37:33,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:37:33,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (1/1) ... [2024-11-23 23:37:33,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:33,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:37:33,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:37:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:37:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:37:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:37:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:37:33,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:37:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 23:37:33,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:37:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:37:33,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:37:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:37:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:37:33,659 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:37:33,846 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:37:33,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:37:34,812 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:37:34,812 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:37:35,606 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:37:35,608 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 23:37:35,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:37:35 BoogieIcfgContainer [2024-11-23 23:37:35,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:37:35,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:37:35,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:37:35,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:37:35,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:37:33" (1/3) ... [2024-11-23 23:37:35,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1830711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:37:35, skipping insertion in model container [2024-11-23 23:37:35,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:33" (2/3) ... [2024-11-23 23:37:35,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1830711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:37:35, skipping insertion in model container [2024-11-23 23:37:35,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:37:35" (3/3) ... [2024-11-23 23:37:35,630 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-23 23:37:35,652 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:37:35,654 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. [2024-11-23 23:37:35,655 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:37:35,789 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 23:37:35,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 195 flow [2024-11-23 23:37:35,929 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2024-11-23 23:37:35,936 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 23:37:35,945 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. [2024-11-23 23:37:35,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 195 flow [2024-11-23 23:37:35,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 82 transitions, 179 flow [2024-11-23 23:37:35,959 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:37:35,974 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;@60272151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:37:35,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-23 23:37:35,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:37:35,979 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 23:37:35,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:37:35,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:35,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 23:37:35,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:35,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1084922, now seen corresponding path program 1 times [2024-11-23 23:37:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:35,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024519728] [2024-11-23 23:37:35,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024519728] [2024-11-23 23:37:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024519728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:36,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:36,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266343981] [2024-11-23 23:37:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:36,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:37:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:36,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:37:36,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:37:36,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-23 23:37:36,513 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) [2024-11-23 23:37:36,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:36,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-23 23:37:36,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:37,760 INFO L124 PetriNetUnfolderBase]: 3370/4957 cut-off events. [2024-11-23 23:37:37,761 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-23 23:37:37,796 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. [2024-11-23 23:37:37,844 INFO L140 encePairwiseOnDemand]: 60/87 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-11-23 23:37:37,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 297 flow [2024-11-23 23:37:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:37:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:37:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-23 23:37:37,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-11-23 23:37:37,867 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 179 flow. Second operand 4 states and 166 transitions. [2024-11-23 23:37:37,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 297 flow [2024-11-23 23:37:37,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 288 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 23:37:37,888 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 236 flow [2024-11-23 23:37:37,892 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} [2024-11-23 23:37:37,897 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-23 23:37:37,897 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 236 flow [2024-11-23 23:37:37,898 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) [2024-11-23 23:37:37,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:37,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 23:37:37,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:37:37,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:37,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2037707548, now seen corresponding path program 1 times [2024-11-23 23:37:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961885375] [2024-11-23 23:37:37,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961885375] [2024-11-23 23:37:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961885375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069117531] [2024-11-23 23:37:38,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:38,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:38,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:37:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:38,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:37:38,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:38,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:37:38,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069117531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:37:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:37:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009371717] [2024-11-23 23:37:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:38,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:37:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:38,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:37:38,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:37:38,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-23 23:37:38,473 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) [2024-11-23 23:37:38,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:38,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-23 23:37:38,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:39,588 INFO L124 PetriNetUnfolderBase]: 3370/4954 cut-off events. [2024-11-23 23:37:39,588 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-23 23:37:39,606 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. [2024-11-23 23:37:39,638 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-11-23 23:37:39,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 340 flow [2024-11-23 23:37:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:37:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:37:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-23 23:37:39,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36973180076628354 [2024-11-23 23:37:39,642 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 236 flow. Second operand 6 states and 193 transitions. [2024-11-23 23:37:39,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 340 flow [2024-11-23 23:37:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:37:39,648 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 258 flow [2024-11-23 23:37:39,648 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} [2024-11-23 23:37:39,650 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-11-23 23:37:39,650 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 258 flow [2024-11-23 23:37:39,651 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) [2024-11-23 23:37:39,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:39,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 23:37:39,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:37:39,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:39,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:39,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1255576581, now seen corresponding path program 1 times [2024-11-23 23:37:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:39,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504818832] [2024-11-23 23:37:39,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:39,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:40,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504818832] [2024-11-23 23:37:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504818832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221675643] [2024-11-23 23:37:40,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:40,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:40,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:37:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:40,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:37:40,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:40,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:37:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221675643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:37:40,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:37:40,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 23:37:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633433855] [2024-11-23 23:37:40,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:37:40,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:37:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:40,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:37:40,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:37:40,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-23 23:37:40,368 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) [2024-11-23 23:37:40,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:40,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-23 23:37:40,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:41,465 INFO L124 PetriNetUnfolderBase]: 3379/4990 cut-off events. [2024-11-23 23:37:41,465 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-11-23 23:37:41,479 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. [2024-11-23 23:37:41,517 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-11-23 23:37:41,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 602 flow [2024-11-23 23:37:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:37:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 23:37:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-11-23 23:37:41,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36091954022988504 [2024-11-23 23:37:41,523 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 258 flow. Second operand 10 states and 314 transitions. [2024-11-23 23:37:41,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 602 flow [2024-11-23 23:37:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 519 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-23 23:37:41,529 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 473 flow [2024-11-23 23:37:41,529 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} [2024-11-23 23:37:41,532 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-23 23:37:41,533 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 473 flow [2024-11-23 23:37:41,533 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) [2024-11-23 23:37:41,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:41,533 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:41,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:37:41,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:41,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 543862992, now seen corresponding path program 1 times [2024-11-23 23:37:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671269126] [2024-11-23 23:37:41,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:41,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:41,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671269126] [2024-11-23 23:37:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671269126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:41,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:41,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:37:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827483656] [2024-11-23 23:37:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:41,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:41,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:42,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:42,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:37:42,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:37:42,003 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) [2024-11-23 23:37:42,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:42,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:37:42,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:43,105 INFO L124 PetriNetUnfolderBase]: 5838/8627 cut-off events. [2024-11-23 23:37:43,105 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-23 23:37:43,128 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. [2024-11-23 23:37:43,168 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 108 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-23 23:37:43,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 757 flow [2024-11-23 23:37:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:37:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:37:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-23 23:37:43,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-23 23:37:43,170 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 473 flow. Second operand 3 states and 163 transitions. [2024-11-23 23:37:43,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 757 flow [2024-11-23 23:37:43,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 720 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 23:37:43,182 INFO L231 Difference]: Finished difference. Result has 78 places, 106 transitions, 461 flow [2024-11-23 23:37:43,183 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} [2024-11-23 23:37:43,183 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-23 23:37:43,183 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 106 transitions, 461 flow [2024-11-23 23:37:43,184 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) [2024-11-23 23:37:43,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:43,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:43,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:37:43,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:43,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -320114292, now seen corresponding path program 1 times [2024-11-23 23:37:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995651479] [2024-11-23 23:37:43,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995651479] [2024-11-23 23:37:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995651479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563242830] [2024-11-23 23:37:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:43,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:43,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:43,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:37:43,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-23 23:37:43,297 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) [2024-11-23 23:37:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-23 23:37:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:44,827 INFO L124 PetriNetUnfolderBase]: 8495/12342 cut-off events. [2024-11-23 23:37:44,827 INFO L125 PetriNetUnfolderBase]: For 953/965 co-relation queries the response was YES. [2024-11-23 23:37:44,855 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. [2024-11-23 23:37:44,896 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-23 23:37:44,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 751 flow [2024-11-23 23:37:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:37:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:37:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-23 23:37:44,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-23 23:37:44,897 INFO L175 Difference]: Start difference. First operand has 78 places, 106 transitions, 461 flow. Second operand 3 states and 147 transitions. [2024-11-23 23:37:44,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 751 flow [2024-11-23 23:37:44,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:37:44,904 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 480 flow [2024-11-23 23:37:44,907 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} [2024-11-23 23:37:44,908 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-23 23:37:44,908 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 480 flow [2024-11-23 23:37:44,908 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) [2024-11-23 23:37:44,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:44,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:44,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:37:44,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:44,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash 581136480, now seen corresponding path program 1 times [2024-11-23 23:37:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:44,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405939818] [2024-11-23 23:37:44,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405939818] [2024-11-23 23:37:45,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405939818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:45,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:45,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418779594] [2024-11-23 23:37:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:45,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:45,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:45,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:37:45,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:37:45,051 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) [2024-11-23 23:37:45,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:45,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:37:45,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:46,559 INFO L124 PetriNetUnfolderBase]: 10419/15911 cut-off events. [2024-11-23 23:37:46,559 INFO L125 PetriNetUnfolderBase]: For 3258/3366 co-relation queries the response was YES. [2024-11-23 23:37:46,583 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. [2024-11-23 23:37:46,639 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 113 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-23 23:37:46,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 796 flow [2024-11-23 23:37:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:37:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:37:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-23 23:37:46,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-23 23:37:46,641 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 480 flow. Second operand 3 states and 163 transitions. [2024-11-23 23:37:46,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 796 flow [2024-11-23 23:37:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:37:46,649 INFO L231 Difference]: Finished difference. Result has 82 places, 108 transitions, 486 flow [2024-11-23 23:37:46,650 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} [2024-11-23 23:37:46,650 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-23 23:37:46,651 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 486 flow [2024-11-23 23:37:46,651 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) [2024-11-23 23:37:46,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:46,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:46,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:37:46,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:46,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 835363861, now seen corresponding path program 1 times [2024-11-23 23:37:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:46,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755361297] [2024-11-23 23:37:46,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:46,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755361297] [2024-11-23 23:37:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755361297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985101435] [2024-11-23 23:37:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:46,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:46,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:46,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:37:46,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-23 23:37:46,718 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) [2024-11-23 23:37:46,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:46,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-23 23:37:46,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:48,823 INFO L124 PetriNetUnfolderBase]: 14063/20642 cut-off events. [2024-11-23 23:37:48,824 INFO L125 PetriNetUnfolderBase]: For 3137/3361 co-relation queries the response was YES. [2024-11-23 23:37:48,863 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. [2024-11-23 23:37:48,933 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-23 23:37:48,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 786 flow [2024-11-23 23:37:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:37:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:37:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-23 23:37:48,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-23 23:37:48,935 INFO L175 Difference]: Start difference. First operand has 82 places, 108 transitions, 486 flow. Second operand 3 states and 153 transitions. [2024-11-23 23:37:48,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 786 flow [2024-11-23 23:37:48,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:37:48,942 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 502 flow [2024-11-23 23:37:48,942 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} [2024-11-23 23:37:48,943 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-23 23:37:48,943 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 502 flow [2024-11-23 23:37:48,943 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) [2024-11-23 23:37:48,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:48,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:48,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:37:48,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:48,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2109061459, now seen corresponding path program 1 times [2024-11-23 23:37:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:48,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774097985] [2024-11-23 23:37:48,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:49,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:49,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774097985] [2024-11-23 23:37:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774097985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501129494] [2024-11-23 23:37:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:49,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:37:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:49,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:37:49,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:37:49,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:37:49,161 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) [2024-11-23 23:37:49,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:49,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:37:49,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:51,020 INFO L124 PetriNetUnfolderBase]: 12513/19151 cut-off events. [2024-11-23 23:37:51,020 INFO L125 PetriNetUnfolderBase]: For 6019/6411 co-relation queries the response was YES. [2024-11-23 23:37:51,060 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. [2024-11-23 23:37:51,106 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 124 selfloop transitions, 10 changer transitions 2/160 dead transitions. [2024-11-23 23:37:51,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 1013 flow [2024-11-23 23:37:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:37:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:37:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-23 23:37:51,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-23 23:37:51,108 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 502 flow. Second operand 5 states and 225 transitions. [2024-11-23 23:37:51,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 1013 flow [2024-11-23 23:37:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 1005 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:37:51,123 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 590 flow [2024-11-23 23:37:51,124 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} [2024-11-23 23:37:51,124 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2024-11-23 23:37:51,125 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 590 flow [2024-11-23 23:37:51,125 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) [2024-11-23 23:37:51,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:51,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:51,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:37:51,125 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:51,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -956393609, now seen corresponding path program 1 times [2024-11-23 23:37:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320067197] [2024-11-23 23:37:51,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:51,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320067197] [2024-11-23 23:37:51,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320067197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:51,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:51,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:37:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662353389] [2024-11-23 23:37:51,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:51,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:51,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:51,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:51,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:37:51,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-23 23:37:51,213 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) [2024-11-23 23:37:51,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:51,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-23 23:37:51,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:54,453 INFO L124 PetriNetUnfolderBase]: 23803/34699 cut-off events. [2024-11-23 23:37:54,453 INFO L125 PetriNetUnfolderBase]: For 9726/10540 co-relation queries the response was YES. [2024-11-23 23:37:54,585 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. [2024-11-23 23:37:54,672 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 117 selfloop transitions, 5 changer transitions 1/144 dead transitions. [2024-11-23 23:37:54,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 922 flow [2024-11-23 23:37:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:37:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:37:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-23 23:37:54,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-23 23:37:54,673 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 590 flow. Second operand 3 states and 153 transitions. [2024-11-23 23:37:54,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 922 flow [2024-11-23 23:37:54,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 144 transitions, 918 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 23:37:54,682 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 603 flow [2024-11-23 23:37:54,683 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} [2024-11-23 23:37:54,683 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2024-11-23 23:37:54,684 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 603 flow [2024-11-23 23:37:54,684 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) [2024-11-23 23:37:54,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:54,684 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 23:37:54,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:37:54,685 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:54,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:54,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1007503825, now seen corresponding path program 2 times [2024-11-23 23:37:54,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531104783] [2024-11-23 23:37:54,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:37:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:54,708 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:37:54,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:37:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:37:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531104783] [2024-11-23 23:37:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531104783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:54,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61087175] [2024-11-23 23:37:54,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:37:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:54,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:37:54,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:37:54,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:37:54,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:37:54,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:37:54,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:37:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:37:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61087175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:37:54,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:37:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 23:37:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404486116] [2024-11-23 23:37:54,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:37:54,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:37:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:54,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:37:54,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:37:54,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-23 23:37:54,976 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) [2024-11-23 23:37:54,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:54,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-23 23:37:54,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:37:58,437 INFO L124 PetriNetUnfolderBase]: 18814/28865 cut-off events. [2024-11-23 23:37:58,438 INFO L125 PetriNetUnfolderBase]: For 12426/13544 co-relation queries the response was YES. [2024-11-23 23:37:58,504 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. [2024-11-23 23:37:58,570 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 47 selfloop transitions, 36 changer transitions 7/112 dead transitions. [2024-11-23 23:37:58,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 753 flow [2024-11-23 23:37:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:37:58,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:37:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-23 23:37:58,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3936781609195402 [2024-11-23 23:37:58,572 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 603 flow. Second operand 4 states and 137 transitions. [2024-11-23 23:37:58,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 753 flow [2024-11-23 23:37:58,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 711 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-23 23:37:58,587 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 538 flow [2024-11-23 23:37:58,588 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} [2024-11-23 23:37:58,588 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-23 23:37:58,588 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 538 flow [2024-11-23 23:37:58,589 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) [2024-11-23 23:37:58,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:37:58,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:58,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:37:58,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:37:58,790 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:37:58,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1632282903, now seen corresponding path program 1 times [2024-11-23 23:37:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:58,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150112950] [2024-11-23 23:37:58,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:58,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150112950] [2024-11-23 23:37:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150112950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785550867] [2024-11-23 23:37:59,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:59,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:37:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:59,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:37:59,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:37:59,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:37:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785550867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:59,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:37:59,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-23 23:37:59,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465738756] [2024-11-23 23:37:59,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:59,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:37:59,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:59,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:37:59,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:37:59,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:37:59,239 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) [2024-11-23 23:37:59,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:37:59,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:37:59,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:01,387 INFO L124 PetriNetUnfolderBase]: 13824/21468 cut-off events. [2024-11-23 23:38:01,388 INFO L125 PetriNetUnfolderBase]: For 7750/8662 co-relation queries the response was YES. [2024-11-23 23:38:01,463 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. [2024-11-23 23:38:01,539 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2024-11-23 23:38:01,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 682 flow [2024-11-23 23:38:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:38:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:38:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-23 23:38:01,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2024-11-23 23:38:01,540 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 538 flow. Second operand 3 states and 130 transitions. [2024-11-23 23:38:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 682 flow [2024-11-23 23:38:01,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 594 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 23:38:01,548 INFO L231 Difference]: Finished difference. Result has 77 places, 101 transitions, 438 flow [2024-11-23 23:38:01,548 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} [2024-11-23 23:38:01,549 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-23 23:38:01,549 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 438 flow [2024-11-23 23:38:01,549 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) [2024-11-23 23:38:01,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:01,550 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:38:01,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:38:01,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 23:38:01,751 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:01,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1441974073, now seen corresponding path program 1 times [2024-11-23 23:38:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:01,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205005576] [2024-11-23 23:38:01,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:01,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:38:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205005576] [2024-11-23 23:38:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205005576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:01,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:38:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199364665] [2024-11-23 23:38:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:01,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:38:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:01,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:38:01,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:38:01,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:38:01,879 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) [2024-11-23 23:38:01,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:01,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:38:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:05,053 INFO L124 PetriNetUnfolderBase]: 18120/27226 cut-off events. [2024-11-23 23:38:05,053 INFO L125 PetriNetUnfolderBase]: For 10692/12510 co-relation queries the response was YES. [2024-11-23 23:38:05,119 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. [2024-11-23 23:38:05,211 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 103 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-23 23:38:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 728 flow [2024-11-23 23:38:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:38:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:38:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-23 23:38:05,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-23 23:38:05,213 INFO L175 Difference]: Start difference. First operand has 77 places, 101 transitions, 438 flow. Second operand 3 states and 153 transitions. [2024-11-23 23:38:05,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 728 flow [2024-11-23 23:38:05,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:38:05,226 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 453 flow [2024-11-23 23:38:05,227 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} [2024-11-23 23:38:05,227 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-23 23:38:05,227 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 453 flow [2024-11-23 23:38:05,228 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) [2024-11-23 23:38:05,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:05,231 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] [2024-11-23 23:38:05,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:38:05,232 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:05,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1455296145, now seen corresponding path program 1 times [2024-11-23 23:38:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:05,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222880544] [2024-11-23 23:38:05,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:05,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:38:05,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222880544] [2024-11-23 23:38:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222880544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:05,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:05,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:38:05,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943962072] [2024-11-23 23:38:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:05,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:38:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:05,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:38:05,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:38:05,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:38:05,511 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) [2024-11-23 23:38:05,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:05,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:38:05,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:08,587 INFO L124 PetriNetUnfolderBase]: 23693/36204 cut-off events. [2024-11-23 23:38:08,587 INFO L125 PetriNetUnfolderBase]: For 14911/16958 co-relation queries the response was YES. [2024-11-23 23:38:08,657 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. [2024-11-23 23:38:08,740 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 95 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2024-11-23 23:38:08,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 764 flow [2024-11-23 23:38:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:38:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:38:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-11-23 23:38:08,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-11-23 23:38:08,743 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 453 flow. Second operand 5 states and 219 transitions. [2024-11-23 23:38:08,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 764 flow [2024-11-23 23:38:08,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:38:08,753 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 494 flow [2024-11-23 23:38:08,753 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} [2024-11-23 23:38:08,754 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2024-11-23 23:38:08,754 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 494 flow [2024-11-23 23:38:08,755 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) [2024-11-23 23:38:08,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:08,755 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] [2024-11-23 23:38:08,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:38:08,755 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1619811796, now seen corresponding path program 1 times [2024-11-23 23:38:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898142826] [2024-11-23 23:38:08,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:38:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898142826] [2024-11-23 23:38:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898142826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:08,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:08,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:38:08,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324732253] [2024-11-23 23:38:08,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:08,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:38:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:08,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:38:08,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:38:08,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-23 23:38:08,845 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) [2024-11-23 23:38:08,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:08,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-23 23:38:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:12,571 INFO L124 PetriNetUnfolderBase]: 26991/38864 cut-off events. [2024-11-23 23:38:12,572 INFO L125 PetriNetUnfolderBase]: For 17381/19544 co-relation queries the response was YES. [2024-11-23 23:38:12,649 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. [2024-11-23 23:38:12,735 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 103 selfloop transitions, 4 changer transitions 1/124 dead transitions. [2024-11-23 23:38:12,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 776 flow [2024-11-23 23:38:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:38:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:38:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-23 23:38:12,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-23 23:38:12,737 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 494 flow. Second operand 3 states and 140 transitions. [2024-11-23 23:38:12,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 776 flow [2024-11-23 23:38:12,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 759 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-23 23:38:12,747 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 494 flow [2024-11-23 23:38:12,747 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} [2024-11-23 23:38:12,748 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-23 23:38:12,748 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 494 flow [2024-11-23 23:38:12,748 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) [2024-11-23 23:38:12,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:12,748 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] [2024-11-23 23:38:12,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:38:12,748 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:12,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1783630572, now seen corresponding path program 1 times [2024-11-23 23:38:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:12,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671859821] [2024-11-23 23:38:12,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:38:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671859821] [2024-11-23 23:38:13,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671859821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:38:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571758237] [2024-11-23 23:38:13,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:13,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:38:13,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:13,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:38:13,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:38:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:13,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:38:13,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:38:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:38:13,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:38:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571758237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:38:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-23 23:38:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203663960] [2024-11-23 23:38:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:13,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:38:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:13,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:38:13,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:38:13,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:38:13,394 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) [2024-11-23 23:38:13,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:13,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:38:13,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:15,866 INFO L124 PetriNetUnfolderBase]: 16299/24740 cut-off events. [2024-11-23 23:38:15,866 INFO L125 PetriNetUnfolderBase]: For 16488/18281 co-relation queries the response was YES. [2024-11-23 23:38:15,937 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. [2024-11-23 23:38:16,334 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 76 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-11-23 23:38:16,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 640 flow [2024-11-23 23:38:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:38:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:38:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-23 23:38:16,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-11-23 23:38:16,336 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 494 flow. Second operand 3 states and 126 transitions. [2024-11-23 23:38:16,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 640 flow [2024-11-23 23:38:16,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 620 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-23 23:38:16,350 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 468 flow [2024-11-23 23:38:16,351 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} [2024-11-23 23:38:16,352 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-23 23:38:16,352 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 468 flow [2024-11-23 23:38:16,352 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) [2024-11-23 23:38:16,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:16,352 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] [2024-11-23 23:38:16,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:38:16,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:38:16,554 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:16,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1224529247, now seen corresponding path program 1 times [2024-11-23 23:38:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:16,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130560319] [2024-11-23 23:38:16,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:38:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130560319] [2024-11-23 23:38:16,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130560319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:16,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:16,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:38:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568696313] [2024-11-23 23:38:16,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:16,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:38:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:16,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:38:16,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:38:16,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-23 23:38:16,675 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) [2024-11-23 23:38:16,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:16,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-23 23:38:16,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:20,145 INFO L124 PetriNetUnfolderBase]: 25849/37649 cut-off events. [2024-11-23 23:38:20,145 INFO L125 PetriNetUnfolderBase]: For 20135/23093 co-relation queries the response was YES. [2024-11-23 23:38:20,222 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. [2024-11-23 23:38:20,307 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-23 23:38:20,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 740 flow [2024-11-23 23:38:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:38:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:38:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-23 23:38:20,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-23 23:38:20,309 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 468 flow. Second operand 3 states and 138 transitions. [2024-11-23 23:38:20,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 740 flow [2024-11-23 23:38:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:38:20,316 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 493 flow [2024-11-23 23:38:20,317 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} [2024-11-23 23:38:20,317 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-23 23:38:20,317 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 493 flow [2024-11-23 23:38:20,317 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) [2024-11-23 23:38:20,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:20,317 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] [2024-11-23 23:38:20,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:38:20,318 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1241968540, now seen corresponding path program 1 times [2024-11-23 23:38:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:20,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475675939] [2024-11-23 23:38:20,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:38:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475675939] [2024-11-23 23:38:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475675939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:20,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:38:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51812903] [2024-11-23 23:38:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:20,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:38:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:20,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:38:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:38:20,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-23 23:38:20,565 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) [2024-11-23 23:38:20,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:20,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-23 23:38:20,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:38:24,767 INFO L124 PetriNetUnfolderBase]: 27356/42140 cut-off events. [2024-11-23 23:38:24,767 INFO L125 PetriNetUnfolderBase]: For 24361/27259 co-relation queries the response was YES. [2024-11-23 23:38:24,867 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. [2024-11-23 23:38:24,947 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 70 selfloop transitions, 6 changer transitions 43/143 dead transitions. [2024-11-23 23:38:24,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 143 transitions, 915 flow [2024-11-23 23:38:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:38:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:38:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-23 23:38:24,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-23 23:38:24,949 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 493 flow. Second operand 4 states and 186 transitions. [2024-11-23 23:38:24,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 143 transitions, 915 flow [2024-11-23 23:38:24,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 143 transitions, 901 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:38:24,979 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 502 flow [2024-11-23 23:38:24,979 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} [2024-11-23 23:38:24,980 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2024-11-23 23:38:24,980 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 502 flow [2024-11-23 23:38:24,980 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) [2024-11-23 23:38:24,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:38:24,980 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] [2024-11-23 23:38:24,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:38:24,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-23 23:38:24,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1868296798, now seen corresponding path program 1 times [2024-11-23 23:38:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075864336] [2024-11-23 23:38:24,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:38:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075864336] [2024-11-23 23:38:25,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075864336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:38:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820212809] [2024-11-23 23:38:25,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:25,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:38:25,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:25,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:38:25,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5facbd-cd99-41c6-85d4-bd4047c5136f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:38:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:25,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:38:25,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:38:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:38:25,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:38:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:38:26,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820212809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:38:26,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:38:26,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 11 [2024-11-23 23:38:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743795525] [2024-11-23 23:38:26,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:38:26,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:38:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:26,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:38:26,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:38:26,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-23 23:38:26,197 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) [2024-11-23 23:38:26,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:38:26,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-23 23:38:26,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand