./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.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_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/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_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/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_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:07:29,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:07:29,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 23:07:29,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:07:29,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:07:29,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:07:29,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:07:29,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:07:29,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:07:29,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:07:29,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:07:29,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:07:29,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:07:29,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:07:29,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:07:29,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:07:29,572 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:07:29,573 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:07:29,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:29,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:29,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:07:29,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:07:29,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:07:29,575 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_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-23 23:07:29,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:07:29,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:07:29,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:07:29,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:07:29,902 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:07:29,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-23 23:07:33,041 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/data/1ad3fdd8c/cf5578e174864c679fbceb28ee5a82de/FLAG383c54edc [2024-11-23 23:07:33,357 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:07:33,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-23 23:07:33,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/data/1ad3fdd8c/cf5578e174864c679fbceb28ee5a82de/FLAG383c54edc [2024-11-23 23:07:33,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/data/1ad3fdd8c/cf5578e174864c679fbceb28ee5a82de [2024-11-23 23:07:33,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:07:33,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:07:33,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:07:33,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:07:33,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:07:33,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7046ec35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33, skipping insertion in model container [2024-11-23 23:07:33,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:07:33,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:07:33,874 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:07:33,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:07:33,917 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:07:33,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33 WrapperNode [2024-11-23 23:07:33,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:07:33,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:07:33,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:07:33,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:07:33,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,959 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-23 23:07:33,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:07:33,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:07:33,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:07:33,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:07:33,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,997 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:07:33,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:33,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:07:34,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:07:34,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:07:34,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:07:34,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (1/1) ... [2024-11-23 23:07:34,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:07:34,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:34,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:07:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:07:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:07:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:07:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:07:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:07:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:07:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:07:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 23:07:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 23:07:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:07:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:07:34,097 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 23:07:34,185 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:07:34,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:07:34,462 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:07:34,462 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:07:34,726 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:07:34,726 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:07:34,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:34 BoogieIcfgContainer [2024-11-23 23:07:34,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:07:34,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:07:34,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:07:34,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:07:34,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:07:33" (1/3) ... [2024-11-23 23:07:34,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d56cdaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:34, skipping insertion in model container [2024-11-23 23:07:34,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:33" (2/3) ... [2024-11-23 23:07:34,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d56cdaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:34, skipping insertion in model container [2024-11-23 23:07:34,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:34" (3/3) ... [2024-11-23 23:07:34,741 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-23 23:07:34,759 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:07:34,761 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2024-11-23 23:07:34,761 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:07:34,828 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 23:07:34,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-23 23:07:34,927 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-23 23:07:34,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 23:07:34,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 66 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-23 23:07:34,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-23 23:07:34,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2024-11-23 23:07:34,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:07:34,964 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;@1b22a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:07:34,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-23 23:07:34,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:07:34,980 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-23 23:07:34,980 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 23:07:34,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:34,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 23:07:34,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:34,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 280359154, now seen corresponding path program 1 times [2024-11-23 23:07:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:34,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159908916] [2024-11-23 23:07:34,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:35,275 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 23:07:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159908916] [2024-11-23 23:07:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159908916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:35,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:07:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721365314] [2024-11-23 23:07:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:35,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:35,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:35,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:35,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 23:07:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:35,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:35,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:35,544 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2024-11-23 23:07:35,544 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-23 23:07:35,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1253 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2024-11-23 23:07:35,555 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-23 23:07:35,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2024-11-23 23:07:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:07:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-23 23:07:35,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-23 23:07:35,574 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-23 23:07:35,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2024-11-23 23:07:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:07:35,587 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2024-11-23 23:07:35,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-23 23:07:35,593 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-23 23:07:35,594 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2024-11-23 23:07:35,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 23:07:35,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:35,594 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:35,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:07:35,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:35,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1157782027, now seen corresponding path program 1 times [2024-11-23 23:07:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:35,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610486646] [2024-11-23 23:07:35,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:35,724 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 23:07:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610486646] [2024-11-23 23:07:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610486646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121390560] [2024-11-23 23:07:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:35,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:35,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:35,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:35,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-23 23:07:35,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 23:07:35,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:35,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-23 23:07:35,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:35,950 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-11-23 23:07:35,950 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-23 23:07:35,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2252 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2024-11-23 23:07:35,954 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-23 23:07:35,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2024-11-23 23:07:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-23 23:07:35,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-23 23:07:35,956 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2024-11-23 23:07:35,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2024-11-23 23:07:35,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:35,958 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-11-23 23:07:35,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-11-23 23:07:35,959 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-11-23 23:07:35,960 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-11-23 23:07:35,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 23:07:35,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:35,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:35,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:07:35,962 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:35,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1553378187, now seen corresponding path program 1 times [2024-11-23 23:07:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057784923] [2024-11-23 23:07:35,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:36,062 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 23:07:36,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:36,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057784923] [2024-11-23 23:07:36,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057784923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:36,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:36,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:07:36,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107376959] [2024-11-23 23:07:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:36,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:36,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:36,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:36,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:36,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 23:07:36,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:36,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:36,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:36,225 INFO L124 PetriNetUnfolderBase]: 240/463 cut-off events. [2024-11-23 23:07:36,225 INFO L125 PetriNetUnfolderBase]: For 164/213 co-relation queries the response was YES. [2024-11-23 23:07:36,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 463 events. 240/463 cut-off events. For 164/213 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2305 event pairs, 129 based on Foata normal form. 17/391 useless extension candidates. Maximal degree in co-relation 708. Up to 284 conditions per place. [2024-11-23 23:07:36,234 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-23 23:07:36,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 236 flow [2024-11-23 23:07:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:07:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-23 23:07:36,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-23 23:07:36,236 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 3 states and 66 transitions. [2024-11-23 23:07:36,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 236 flow [2024-11-23 23:07:36,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:36,239 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 118 flow [2024-11-23 23:07:36,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-23 23:07:36,242 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-11-23 23:07:36,242 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 118 flow [2024-11-23 23:07:36,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 23:07:36,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:36,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:36,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:07:36,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:36,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1384797383, now seen corresponding path program 1 times [2024-11-23 23:07:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:36,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084916123] [2024-11-23 23:07:36,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:36,332 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 23:07:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:36,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084916123] [2024-11-23 23:07:36,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084916123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:36,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:07:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323727055] [2024-11-23 23:07:36,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:36,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:36,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:36,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:36,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:36,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:36,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:36,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:36,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:36,555 INFO L124 PetriNetUnfolderBase]: 303/680 cut-off events. [2024-11-23 23:07:36,555 INFO L125 PetriNetUnfolderBase]: For 311/315 co-relation queries the response was YES. [2024-11-23 23:07:36,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 680 events. 303/680 cut-off events. For 311/315 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3589 event pairs, 74 based on Foata normal form. 22/613 useless extension candidates. Maximal degree in co-relation 565. Up to 233 conditions per place. [2024-11-23 23:07:36,565 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-23 23:07:36,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 316 flow [2024-11-23 23:07:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-23 23:07:36,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-23 23:07:36,567 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 118 flow. Second operand 4 states and 92 transitions. [2024-11-23 23:07:36,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 316 flow [2024-11-23 23:07:36,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:36,573 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 184 flow [2024-11-23 23:07:36,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-23 23:07:36,573 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2024-11-23 23:07:36,574 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 184 flow [2024-11-23 23:07:36,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:36,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:36,574 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:36,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:07:36,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:36,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1398291392, now seen corresponding path program 1 times [2024-11-23 23:07:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854982099] [2024-11-23 23:07:36,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:36,674 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 23:07:36,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854982099] [2024-11-23 23:07:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854982099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582919653] [2024-11-23 23:07:36,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:36,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:36,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:36,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:36,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:07:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:36,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:07:36,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:36,787 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 23:07:36,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:07:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582919653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:07:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-23 23:07:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789172640] [2024-11-23 23:07:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:36,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:36,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:36,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:07:36,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:36,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:36,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:36,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:36,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:36,975 INFO L124 PetriNetUnfolderBase]: 359/804 cut-off events. [2024-11-23 23:07:36,975 INFO L125 PetriNetUnfolderBase]: For 1105/1115 co-relation queries the response was YES. [2024-11-23 23:07:36,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 804 events. 359/804 cut-off events. For 1105/1115 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4281 event pairs, 82 based on Foata normal form. 56/813 useless extension candidates. Maximal degree in co-relation 978. Up to 330 conditions per place. [2024-11-23 23:07:36,982 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-11-23 23:07:36,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 363 flow [2024-11-23 23:07:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-23 23:07:36,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-23 23:07:36,985 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 184 flow. Second operand 4 states and 79 transitions. [2024-11-23 23:07:36,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 363 flow [2024-11-23 23:07:36,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:36,991 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 296 flow [2024-11-23 23:07:36,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-11-23 23:07:36,995 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-11-23 23:07:36,996 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 296 flow [2024-11-23 23:07:36,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:36,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:36,996 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:37,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:37,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:37,201 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:37,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 425493661, now seen corresponding path program 1 times [2024-11-23 23:07:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:37,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701767574] [2024-11-23 23:07:37,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:07:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701767574] [2024-11-23 23:07:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701767574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654018183] [2024-11-23 23:07:37,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:37,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:37,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:37,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:07:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:37,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:07:37,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:07:37,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:07:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654018183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:37,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:37,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 23:07:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084962782] [2024-11-23 23:07:37,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:37,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:37,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:37,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:37,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-23 23:07:37,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 23:07:37,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:37,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-23 23:07:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:37,611 INFO L124 PetriNetUnfolderBase]: 402/759 cut-off events. [2024-11-23 23:07:37,611 INFO L125 PetriNetUnfolderBase]: For 1390/1433 co-relation queries the response was YES. [2024-11-23 23:07:37,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 759 events. 402/759 cut-off events. For 1390/1433 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3655 event pairs, 107 based on Foata normal form. 15/692 useless extension candidates. Maximal degree in co-relation 968. Up to 397 conditions per place. [2024-11-23 23:07:37,621 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-11-23 23:07:37,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 452 flow [2024-11-23 23:07:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-23 23:07:37,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-23 23:07:37,623 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 296 flow. Second operand 4 states and 69 transitions. [2024-11-23 23:07:37,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 452 flow [2024-11-23 23:07:37,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 435 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:37,631 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 266 flow [2024-11-23 23:07:37,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-23 23:07:37,632 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-11-23 23:07:37,633 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 266 flow [2024-11-23 23:07:37,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 23:07:37,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:37,634 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:37,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:37,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:37,835 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:37,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -649564914, now seen corresponding path program 1 times [2024-11-23 23:07:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:37,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137883098] [2024-11-23 23:07:37,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:37,966 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 23:07:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137883098] [2024-11-23 23:07:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137883098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128643608] [2024-11-23 23:07:37,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:37,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:37,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:07:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:38,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:07:38,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:38,102 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 23:07:38,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:38,153 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 23:07:38,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128643608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:38,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:38,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-23 23:07:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302299134] [2024-11-23 23:07:38,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:38,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:07:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:38,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:07:38,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:07:38,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:38,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 23:07:38,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:38,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:38,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:38,388 INFO L124 PetriNetUnfolderBase]: 267/586 cut-off events. [2024-11-23 23:07:38,388 INFO L125 PetriNetUnfolderBase]: For 1409/1427 co-relation queries the response was YES. [2024-11-23 23:07:38,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 586 events. 267/586 cut-off events. For 1409/1427 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2881 event pairs, 11 based on Foata normal form. 38/613 useless extension candidates. Maximal degree in co-relation 608. Up to 217 conditions per place. [2024-11-23 23:07:38,407 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-11-23 23:07:38,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 436 flow [2024-11-23 23:07:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:07:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 23:07:38,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-11-23 23:07:38,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-23 23:07:38,410 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 266 flow. Second operand 7 states and 126 transitions. [2024-11-23 23:07:38,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 436 flow [2024-11-23 23:07:38,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 419 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 23:07:38,415 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 237 flow [2024-11-23 23:07:38,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-23 23:07:38,415 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2024-11-23 23:07:38,416 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 237 flow [2024-11-23 23:07:38,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 23:07:38,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:38,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:38,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:38,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 23:07:38,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:38,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1310714370, now seen corresponding path program 1 times [2024-11-23 23:07:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:38,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084967872] [2024-11-23 23:07:38,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:38,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:38,676 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 23:07:38,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:38,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084967872] [2024-11-23 23:07:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084967872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852773134] [2024-11-23 23:07:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:38,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:38,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:38,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:38,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:38,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:38,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:38,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:38,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:38,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:38,806 INFO L124 PetriNetUnfolderBase]: 245/499 cut-off events. [2024-11-23 23:07:38,806 INFO L125 PetriNetUnfolderBase]: For 1313/1341 co-relation queries the response was YES. [2024-11-23 23:07:38,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 499 events. 245/499 cut-off events. For 1313/1341 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2271 event pairs, 117 based on Foata normal form. 18/494 useless extension candidates. Maximal degree in co-relation 858. Up to 356 conditions per place. [2024-11-23 23:07:38,812 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-11-23 23:07:38,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 374 flow [2024-11-23 23:07:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-23 23:07:38,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-23 23:07:38,814 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 237 flow. Second operand 4 states and 69 transitions. [2024-11-23 23:07:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 374 flow [2024-11-23 23:07:38,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 340 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-23 23:07:38,818 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 209 flow [2024-11-23 23:07:38,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-23 23:07:38,819 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-11-23 23:07:38,819 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 209 flow [2024-11-23 23:07:38,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:38,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:38,821 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:38,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:07:38,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:38,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash -566725309, now seen corresponding path program 1 times [2024-11-23 23:07:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170927331] [2024-11-23 23:07:38,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170927331] [2024-11-23 23:07:38,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170927331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989834189] [2024-11-23 23:07:38,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:38,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:38,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:38,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:07:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:38,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:07:38,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:39,037 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:07:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989834189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:07:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 23:07:39,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404625497] [2024-11-23 23:07:39,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:39,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:07:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:39,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:07:39,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:07:39,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-23 23:07:39,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:39,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:39,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-23 23:07:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:39,295 INFO L124 PetriNetUnfolderBase]: 330/667 cut-off events. [2024-11-23 23:07:39,295 INFO L125 PetriNetUnfolderBase]: For 1193/1212 co-relation queries the response was YES. [2024-11-23 23:07:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 667 events. 330/667 cut-off events. For 1193/1212 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3150 event pairs, 42 based on Foata normal form. 20/659 useless extension candidates. Maximal degree in co-relation 777. Up to 208 conditions per place. [2024-11-23 23:07:39,302 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-11-23 23:07:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 567 flow [2024-11-23 23:07:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:07:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:07:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-23 23:07:39,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-23 23:07:39,303 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 209 flow. Second operand 6 states and 96 transitions. [2024-11-23 23:07:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 567 flow [2024-11-23 23:07:39,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 561 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 23:07:39,307 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 211 flow [2024-11-23 23:07:39,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-11-23 23:07:39,308 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-11-23 23:07:39,309 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 211 flow [2024-11-23 23:07:39,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:39,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:39,309 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 23:07:39,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:07:39,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-23 23:07:39,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:39,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash -388615089, now seen corresponding path program 1 times [2024-11-23 23:07:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779168120] [2024-11-23 23:07:39,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779168120] [2024-11-23 23:07:39,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779168120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235445557] [2024-11-23 23:07:39,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:39,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:39,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:07:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:39,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:07:39,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:39,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235445557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:39,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 23:07:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328439411] [2024-11-23 23:07:39,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:39,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:07:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:39,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:07:39,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:07:39,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-23 23:07:39,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:07:39,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:39,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-23 23:07:39,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:40,172 INFO L124 PetriNetUnfolderBase]: 680/1320 cut-off events. [2024-11-23 23:07:40,172 INFO L125 PetriNetUnfolderBase]: For 2792/2831 co-relation queries the response was YES. [2024-11-23 23:07:40,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1320 events. 680/1320 cut-off events. For 2792/2831 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6587 event pairs, 111 based on Foata normal form. 60/1370 useless extension candidates. Maximal degree in co-relation 1672. Up to 464 conditions per place. [2024-11-23 23:07:40,181 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 114 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2024-11-23 23:07:40,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 133 transitions, 1033 flow [2024-11-23 23:07:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:07:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 23:07:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-23 23:07:40,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-23 23:07:40,182 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 211 flow. Second operand 10 states and 172 transitions. [2024-11-23 23:07:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 133 transitions, 1033 flow [2024-11-23 23:07:40,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 1006 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-23 23:07:40,190 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 280 flow [2024-11-23 23:07:40,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-23 23:07:40,191 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2024-11-23 23:07:40,193 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 280 flow [2024-11-23 23:07:40,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 23:07:40,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:40,193 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:40,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:07:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:07:40,394 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:40,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1185843675, now seen corresponding path program 1 times [2024-11-23 23:07:40,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:40,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816925890] [2024-11-23 23:07:40,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:40,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:40,477 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 23:07:40,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816925890] [2024-11-23 23:07:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816925890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530681094] [2024-11-23 23:07:40,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:40,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:40,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:40,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:40,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:07:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:40,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:07:40,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:40,567 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 23:07:40,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:40,623 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 23:07:40,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530681094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:40,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-23 23:07:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137687311] [2024-11-23 23:07:40,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:40,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:07:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:40,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:07:40,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:07:40,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:40,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 280 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 23:07:40,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:40,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:40,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:40,925 INFO L124 PetriNetUnfolderBase]: 591/1347 cut-off events. [2024-11-23 23:07:40,925 INFO L125 PetriNetUnfolderBase]: For 3688/3730 co-relation queries the response was YES. [2024-11-23 23:07:40,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1347 events. 591/1347 cut-off events. For 3688/3730 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7522 event pairs, 49 based on Foata normal form. 212/1529 useless extension candidates. Maximal degree in co-relation 2790. Up to 253 conditions per place. [2024-11-23 23:07:40,934 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-11-23 23:07:40,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 830 flow [2024-11-23 23:07:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:07:40,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 23:07:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-11-23 23:07:40,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-23 23:07:40,936 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 280 flow. Second operand 8 states and 160 transitions. [2024-11-23 23:07:40,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 830 flow [2024-11-23 23:07:40,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 801 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-23 23:07:40,942 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 423 flow [2024-11-23 23:07:40,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-23 23:07:40,943 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-23 23:07:40,943 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 423 flow [2024-11-23 23:07:40,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 23:07:40,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:40,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:40,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:41,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:41,144 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:41,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2127893162, now seen corresponding path program 1 times [2024-11-23 23:07:41,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:41,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106962587] [2024-11-23 23:07:41,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:41,216 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 23:07:41,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:41,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106962587] [2024-11-23 23:07:41,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106962587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:41,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:41,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160465202] [2024-11-23 23:07:41,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:41,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:41,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:41,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:41,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:41,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:41,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:41,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:41,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:41,426 INFO L124 PetriNetUnfolderBase]: 539/1196 cut-off events. [2024-11-23 23:07:41,427 INFO L125 PetriNetUnfolderBase]: For 3784/3808 co-relation queries the response was YES. [2024-11-23 23:07:41,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 1196 events. 539/1196 cut-off events. For 3784/3808 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6500 event pairs, 290 based on Foata normal form. 36/1205 useless extension candidates. Maximal degree in co-relation 3255. Up to 815 conditions per place. [2024-11-23 23:07:41,436 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-23 23:07:41,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 670 flow [2024-11-23 23:07:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:07:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-23 23:07:41,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-23 23:07:41,438 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 423 flow. Second operand 4 states and 68 transitions. [2024-11-23 23:07:41,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 670 flow [2024-11-23 23:07:41,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 647 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 23:07:41,448 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 434 flow [2024-11-23 23:07:41,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-23 23:07:41,448 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2024-11-23 23:07:41,449 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 434 flow [2024-11-23 23:07:41,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:07:41,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:41,449 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:41,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:07:41,449 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:41,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1011125216, now seen corresponding path program 1 times [2024-11-23 23:07:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273115322] [2024-11-23 23:07:41,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:07:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273115322] [2024-11-23 23:07:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273115322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:07:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866176882] [2024-11-23 23:07:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:41,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:41,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:41,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:41,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 23:07:41,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:07:41,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:41,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 23:07:41,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:41,696 INFO L124 PetriNetUnfolderBase]: 539/1159 cut-off events. [2024-11-23 23:07:41,696 INFO L125 PetriNetUnfolderBase]: For 4208/4244 co-relation queries the response was YES. [2024-11-23 23:07:41,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 1159 events. 539/1159 cut-off events. For 4208/4244 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6111 event pairs, 338 based on Foata normal form. 9/1146 useless extension candidates. Maximal degree in co-relation 3363. Up to 912 conditions per place. [2024-11-23 23:07:41,706 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 43 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-11-23 23:07:41,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 520 flow [2024-11-23 23:07:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:07:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-23 23:07:41,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-23 23:07:41,707 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 434 flow. Second operand 3 states and 44 transitions. [2024-11-23 23:07:41,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 520 flow [2024-11-23 23:07:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 23:07:41,717 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 418 flow [2024-11-23 23:07:41,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-23 23:07:41,717 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-23 23:07:41,718 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 418 flow [2024-11-23 23:07:41,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:07:41,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:41,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:41,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:07:41,718 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:41,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1280110354, now seen corresponding path program 1 times [2024-11-23 23:07:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:41,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588995368] [2024-11-23 23:07:41,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:41,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:07:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588995368] [2024-11-23 23:07:41,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588995368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:41,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:41,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:07:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925986787] [2024-11-23 23:07:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:41,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:41,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:41,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:41,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 23:07:41,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:07:41,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:41,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 23:07:41,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:41,965 INFO L124 PetriNetUnfolderBase]: 539/1146 cut-off events. [2024-11-23 23:07:41,965 INFO L125 PetriNetUnfolderBase]: For 3848/3884 co-relation queries the response was YES. [2024-11-23 23:07:41,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 1146 events. 539/1146 cut-off events. For 3848/3884 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6011 event pairs, 338 based on Foata normal form. 9/1129 useless extension candidates. Maximal degree in co-relation 4343. Up to 903 conditions per place. [2024-11-23 23:07:41,972 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 36 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-11-23 23:07:41,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 502 flow [2024-11-23 23:07:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:07:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-23 23:07:41,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-23 23:07:41,974 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 418 flow. Second operand 3 states and 43 transitions. [2024-11-23 23:07:41,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 502 flow [2024-11-23 23:07:41,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:41,981 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 389 flow [2024-11-23 23:07:41,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-11-23 23:07:41,981 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-23 23:07:41,982 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 389 flow [2024-11-23 23:07:41,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 23:07:41,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:41,982 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-23 23:07:41,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:07:41,982 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:41,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1787896435, now seen corresponding path program 1 times [2024-11-23 23:07:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924186464] [2024-11-23 23:07:41,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924186464] [2024-11-23 23:07:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924186464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667831908] [2024-11-23 23:07:42,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:42,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:42,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:42,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:42,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:07:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:42,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:07:42,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:42,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667831908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 23:07:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568965626] [2024-11-23 23:07:42,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:42,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:07:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:42,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:07:42,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:07:42,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:42,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 389 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 23:07:42,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:42,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:42,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:42,747 INFO L124 PetriNetUnfolderBase]: 739/1895 cut-off events. [2024-11-23 23:07:42,747 INFO L125 PetriNetUnfolderBase]: For 7177/7265 co-relation queries the response was YES. [2024-11-23 23:07:42,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1895 events. 739/1895 cut-off events. For 7177/7265 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11189 event pairs, 31 based on Foata normal form. 72/1956 useless extension candidates. Maximal degree in co-relation 6961. Up to 279 conditions per place. [2024-11-23 23:07:42,762 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 96 selfloop transitions, 53 changer transitions 0/159 dead transitions. [2024-11-23 23:07:42,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 1450 flow [2024-11-23 23:07:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:07:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 23:07:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-11-23 23:07:42,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-23 23:07:42,764 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 389 flow. Second operand 13 states and 248 transitions. [2024-11-23 23:07:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 1450 flow [2024-11-23 23:07:42,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 159 transitions, 1449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:07:42,778 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 1042 flow [2024-11-23 23:07:42,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-11-23 23:07:42,779 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2024-11-23 23:07:42,779 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 1042 flow [2024-11-23 23:07:42,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 23:07:42,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:42,780 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-23 23:07:42,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:07:42,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:07:42,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:42,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1333557341, now seen corresponding path program 2 times [2024-11-23 23:07:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122192476] [2024-11-23 23:07:42,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:42,993 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:07:42,993 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:07:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122192476] [2024-11-23 23:07:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122192476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047150123] [2024-11-23 23:07:43,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:43,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:43,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:43,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:07:43,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:07:43,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:43,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:07:43,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:07:43,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:07:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047150123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:43,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-23 23:07:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289473537] [2024-11-23 23:07:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:43,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:07:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:43,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:07:43,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:07:43,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 23:07:43,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 1042 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:07:43,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:43,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 23:07:43,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:43,714 INFO L124 PetriNetUnfolderBase]: 1447/2790 cut-off events. [2024-11-23 23:07:43,714 INFO L125 PetriNetUnfolderBase]: For 16588/16679 co-relation queries the response was YES. [2024-11-23 23:07:43,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11627 conditions, 2790 events. 1447/2790 cut-off events. For 16588/16679 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13819 event pairs, 237 based on Foata normal form. 136/2924 useless extension candidates. Maximal degree in co-relation 11593. Up to 1206 conditions per place. [2024-11-23 23:07:43,744 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 151 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-23 23:07:43,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 167 transitions, 2478 flow [2024-11-23 23:07:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:07:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:07:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-23 23:07:43,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-11-23 23:07:43,745 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 1042 flow. Second operand 5 states and 63 transitions. [2024-11-23 23:07:43,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 167 transitions, 2478 flow [2024-11-23 23:07:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 2390 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-11-23 23:07:43,778 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 1024 flow [2024-11-23 23:07:43,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-11-23 23:07:43,778 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2024-11-23 23:07:43,779 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 1024 flow [2024-11-23 23:07:43,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:07:43,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:43,779 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-23 23:07:43,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:43,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:07:43,983 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:43,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 874079411, now seen corresponding path program 2 times [2024-11-23 23:07:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627285446] [2024-11-23 23:07:43,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:44,007 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:07:44,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627285446] [2024-11-23 23:07:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627285446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764061083] [2024-11-23 23:07:44,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:07:44,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:44,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:44,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:07:44,358 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:07:44,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:44,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:07:44,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:44,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:44,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764061083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:44,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:44,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-23 23:07:44,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593144564] [2024-11-23 23:07:44,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:44,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:07:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:44,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:07:44,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:07:44,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:44,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 1024 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 23:07:44,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:44,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:44,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:45,937 INFO L124 PetriNetUnfolderBase]: 1903/4631 cut-off events. [2024-11-23 23:07:45,937 INFO L125 PetriNetUnfolderBase]: For 39018/39274 co-relation queries the response was YES. [2024-11-23 23:07:45,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 4631 events. 1903/4631 cut-off events. For 39018/39274 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 27612 event pairs, 73 based on Foata normal form. 156/4774 useless extension candidates. Maximal degree in co-relation 19308. Up to 911 conditions per place. [2024-11-23 23:07:45,974 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 170 selfloop transitions, 225 changer transitions 0/405 dead transitions. [2024-11-23 23:07:45,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 405 transitions, 4678 flow [2024-11-23 23:07:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:07:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-23 23:07:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 488 transitions. [2024-11-23 23:07:45,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-23 23:07:45,978 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 1024 flow. Second operand 25 states and 488 transitions. [2024-11-23 23:07:45,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 405 transitions, 4678 flow [2024-11-23 23:07:46,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 405 transitions, 4628 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 23:07:46,018 INFO L231 Difference]: Finished difference. Result has 120 places, 262 transitions, 4088 flow [2024-11-23 23:07:46,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4088, PETRI_PLACES=120, PETRI_TRANSITIONS=262} [2024-11-23 23:07:46,020 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2024-11-23 23:07:46,020 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 262 transitions, 4088 flow [2024-11-23 23:07:46,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 23:07:46,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:46,021 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-23 23:07:46,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:07:46,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:07:46,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:46,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1539676467, now seen corresponding path program 3 times [2024-11-23 23:07:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:46,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081040014] [2024-11-23 23:07:46,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:07:46,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:46,280 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-23 23:07:46,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081040014] [2024-11-23 23:07:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081040014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763408225] [2024-11-23 23:07:47,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:07:47,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:47,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:47,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:07:47,196 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-23 23:07:47,196 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:47,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:07:47,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:47,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763408225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:07:48,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:07:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-23 23:07:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448742036] [2024-11-23 23:07:48,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:07:48,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-23 23:07:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:48,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-23 23:07:48,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 23:07:48,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:07:48,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 262 transitions, 4088 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 23:07:48,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:07:48,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:07:48,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:07:53,056 INFO L124 PetriNetUnfolderBase]: 5995/14391 cut-off events. [2024-11-23 23:07:53,057 INFO L125 PetriNetUnfolderBase]: For 293818/294738 co-relation queries the response was YES. [2024-11-23 23:07:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63528 conditions, 14391 events. 5995/14391 cut-off events. For 293818/294738 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 97905 event pairs, 341 based on Foata normal form. 324/14702 useless extension candidates. Maximal degree in co-relation 63474. Up to 3223 conditions per place. [2024-11-23 23:07:53,214 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 316 selfloop transitions, 865 changer transitions 0/1191 dead transitions. [2024-11-23 23:07:53,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1191 transitions, 17436 flow [2024-11-23 23:07:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-23 23:07:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-23 23:07:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 968 transitions. [2024-11-23 23:07:53,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6173469387755102 [2024-11-23 23:07:53,222 INFO L175 Difference]: Start difference. First operand has 120 places, 262 transitions, 4088 flow. Second operand 49 states and 968 transitions. [2024-11-23 23:07:53,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1191 transitions, 17436 flow [2024-11-23 23:07:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1191 transitions, 15648 flow, removed 866 selfloop flow, removed 5 redundant places. [2024-11-23 23:07:53,499 INFO L231 Difference]: Finished difference. Result has 208 places, 904 transitions, 15465 flow [2024-11-23 23:07:53,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=15465, PETRI_PLACES=208, PETRI_TRANSITIONS=904} [2024-11-23 23:07:53,500 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2024-11-23 23:07:53,501 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 904 transitions, 15465 flow [2024-11-23 23:07:53,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 23:07:53,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:07:53,502 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-23 23:07:53,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:07:53,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:07:53,706 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:07:53,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:53,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1753006643, now seen corresponding path program 4 times [2024-11-23 23:07:53,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:53,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707474899] [2024-11-23 23:07:53,707 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:07:53,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:53,806 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:07:53,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:56,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707474899] [2024-11-23 23:07:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707474899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114459063] [2024-11-23 23:07:56,352 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:07:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:56,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:56,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:07:56,487 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:07:56,487 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:07:56,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 23:07:56,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:07:56,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:08:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:08:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114459063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:08:00,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:08:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-23 23:08:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133374141] [2024-11-23 23:08:00,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:08:00,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-23 23:08:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:00,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-23 23:08:00,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-23 23:08:00,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:08:00,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 904 transitions, 15465 flow. Second operand has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 23:08:00,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:08:00,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:08:00,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:08:23,979 INFO L124 PetriNetUnfolderBase]: 21127/50119 cut-off events. [2024-11-23 23:08:23,979 INFO L125 PetriNetUnfolderBase]: For 2275094/2278502 co-relation queries the response was YES. [2024-11-23 23:08:24,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225624 conditions, 50119 events. 21127/50119 cut-off events. For 2275094/2278502 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 396178 event pairs, 1497 based on Foata normal form. 660/50766 useless extension candidates. Maximal degree in co-relation 225528. Up to 11095 conditions per place. [2024-11-23 23:08:24,745 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 606 selfloop transitions, 3305 changer transitions 0/3921 dead transitions. [2024-11-23 23:08:24,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 3921 transitions, 63157 flow [2024-11-23 23:08:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-23 23:08:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-11-23 23:08:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 1928 transitions. [2024-11-23 23:08:24,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6211340206185567 [2024-11-23 23:08:24,753 INFO L175 Difference]: Start difference. First operand has 208 places, 904 transitions, 15465 flow. Second operand 97 states and 1928 transitions. [2024-11-23 23:08:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 3921 transitions, 63157 flow [2024-11-23 23:08:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 3921 transitions, 56472 flow, removed 3176 selfloop flow, removed 11 redundant places. [2024-11-23 23:08:26,886 INFO L231 Difference]: Finished difference. Result has 386 places, 3346 transitions, 59334 flow [2024-11-23 23:08:26,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=873, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=59334, PETRI_PLACES=386, PETRI_TRANSITIONS=3346} [2024-11-23 23:08:26,887 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 352 predicate places. [2024-11-23 23:08:26,887 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 3346 transitions, 59334 flow [2024-11-23 23:08:26,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 23:08:26,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:08:26,888 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-11-23 23:08:26,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:08:27,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:08:27,089 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-23 23:08:27,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1457919027, now seen corresponding path program 5 times [2024-11-23 23:08:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114006276] [2024-11-23 23:08:27,091 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:08:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:27,609 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-23 23:08:27,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:08:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:08:36,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114006276] [2024-11-23 23:08:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114006276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:08:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39554490] [2024-11-23 23:08:36,075 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:08:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:08:36,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:08:36,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:08:36,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef751a-1ef9-4d7a-8c57-54a095f06d4c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:08:36,583 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-23 23:08:36,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:08:36,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-23 23:08:36,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:08:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:08:37,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:08:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:08:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39554490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:08:49,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:08:49,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2024-11-23 23:08:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31284667] [2024-11-23 23:08:49,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:08:49,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-23 23:08:49,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:49,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-23 23:08:49,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-23 23:08:49,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-23 23:08:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 3346 transitions, 59334 flow. Second operand has 192 states, 192 states have (on average 13.0) internal successors, (2496), 192 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states 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 23:08:49,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:08:49,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-23 23:08:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand