./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:19:01,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:19:01,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:19:01,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:19:01,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:19:01,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:19:01,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:19:01,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:19:01,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:19:01,903 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:19:01,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:19:01,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:19:01,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:19:01,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:19:01,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:19:01,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:19:01,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:19:01,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:19:01,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:19:01,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:19:01,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:19:01,908 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:01,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:19:01,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:01,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:19:01,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:19:01,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:19:01,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:19:01,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:19:01,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:19:01,910 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_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-27 20:19:02,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:19:02,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:19:02,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:19:02,204 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:19:02,204 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:19:02,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-27 20:19:05,181 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/data/a709937f7/a02f380d489c48998207fe8905f42a77/FLAGb845a2543 [2024-11-27 20:19:05,525 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:19:05,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-27 20:19:05,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/data/a709937f7/a02f380d489c48998207fe8905f42a77/FLAGb845a2543 [2024-11-27 20:19:05,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/data/a709937f7/a02f380d489c48998207fe8905f42a77 [2024-11-27 20:19:05,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:19:05,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:19:05,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:19:05,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:19:05,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:19:05,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5998c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05, skipping insertion in model container [2024-11-27 20:19:05,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:19:05,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:19:05,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:19:05,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:19:05,844 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:19:05,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05 WrapperNode [2024-11-27 20:19:05,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:19:05,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:19:05,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:19:05,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:19:05,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,885 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2024-11-27 20:19:05,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:19:05,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:19:05,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:19:05,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:19:05,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,913 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]. [2024-11-27 20:19:05,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:19:05,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:19:05,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:19:05,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:19:05,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (1/1) ... [2024-11-27 20:19:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:19:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:05,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:19:05,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:19:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:19:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:19:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:19:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:19:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:19:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:19:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:19:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:19:06,021 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:19:06,130 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:19:06,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:19:06,419 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:19:06,419 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:19:06,634 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:19:06,636 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:19:06,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:06 BoogieIcfgContainer [2024-11-27 20:19:06,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:19:06,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:19:06,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:19:06,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:19:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:19:05" (1/3) ... [2024-11-27 20:19:06,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad9e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:06, skipping insertion in model container [2024-11-27 20:19:06,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:19:05" (2/3) ... [2024-11-27 20:19:06,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad9e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:19:06, skipping insertion in model container [2024-11-27 20:19:06,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:19:06" (3/3) ... [2024-11-27 20:19:06,655 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-27 20:19:06,676 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:19:06,677 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1-alt.wvr.c that has 3 procedures, 34 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2024-11-27 20:19:06,678 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:19:06,766 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:19:06,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2024-11-27 20:19:06,891 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2024-11-27 20:19:06,895 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:19:06,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-27 20:19:06,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2024-11-27 20:19:06,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2024-11-27 20:19:06,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:19:06,946 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;@2dc57c0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:19:06,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-27 20:19:06,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:19:06,960 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-27 20:19:06,961 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 20:19:06,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:06,962 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 20:19:06,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 277770316, now seen corresponding path program 1 times [2024-11-27 20:19:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591095202] [2024-11-27 20:19:06,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:07,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591095202] [2024-11-27 20:19:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591095202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:07,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:07,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:19:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330979252] [2024-11-27 20:19:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:07,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:07,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:07,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:07,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:07,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:07,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:07,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:07,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:07,579 INFO L124 PetriNetUnfolderBase]: 194/415 cut-off events. [2024-11-27 20:19:07,579 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-27 20:19:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 415 events. 194/415 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1908 event pairs, 77 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 717. Up to 290 conditions per place. [2024-11-27 20:19:07,587 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-27 20:19:07,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 165 flow [2024-11-27 20:19:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:19:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-27 20:19:07,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 20:19:07,613 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-11-27 20:19:07,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 165 flow [2024-11-27 20:19:07,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:19:07,628 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 84 flow [2024-11-27 20:19:07,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=84, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-27 20:19:07,636 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-27 20:19:07,636 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 84 flow [2024-11-27 20:19:07,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:07,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:07,637 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:07,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:19:07,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:07,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 649312047, now seen corresponding path program 1 times [2024-11-27 20:19:07,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892053434] [2024-11-27 20:19:07,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892053434] [2024-11-27 20:19:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892053434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:19:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922834431] [2024-11-27 20:19:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:07,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:19:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:07,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:19:07,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:19:07,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:07,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:19:07,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:07,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:07,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:08,167 INFO L124 PetriNetUnfolderBase]: 298/578 cut-off events. [2024-11-27 20:19:08,167 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-27 20:19:08,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 578 events. 298/578 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2751 event pairs, 127 based on Foata normal form. 18/495 useless extension candidates. Maximal degree in co-relation 552. Up to 422 conditions per place. [2024-11-27 20:19:08,180 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-27 20:19:08,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 240 flow [2024-11-27 20:19:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:19:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:19:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-27 20:19:08,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-27 20:19:08,185 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 84 flow. Second operand 4 states and 92 transitions. [2024-11-27 20:19:08,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 240 flow [2024-11-27 20:19:08,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:08,189 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 111 flow [2024-11-27 20:19:08,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-27 20:19:08,190 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-27 20:19:08,191 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 111 flow [2024-11-27 20:19:08,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:19:08,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:08,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:08,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:19:08,191 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:08,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1946908427, now seen corresponding path program 1 times [2024-11-27 20:19:08,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:08,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658143151] [2024-11-27 20:19:08,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658143151] [2024-11-27 20:19:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658143151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:19:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907147478] [2024-11-27 20:19:08,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:08,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:08,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:08,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:08,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:08,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:08,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:08,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:08,607 INFO L124 PetriNetUnfolderBase]: 221/499 cut-off events. [2024-11-27 20:19:08,607 INFO L125 PetriNetUnfolderBase]: For 156/160 co-relation queries the response was YES. [2024-11-27 20:19:08,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 499 events. 221/499 cut-off events. For 156/160 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2500 event pairs, 133 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 357. Up to 286 conditions per place. [2024-11-27 20:19:08,613 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-11-27 20:19:08,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 244 flow [2024-11-27 20:19:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:19:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-27 20:19:08,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2024-11-27 20:19:08,619 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 111 flow. Second operand 3 states and 73 transitions. [2024-11-27 20:19:08,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 244 flow [2024-11-27 20:19:08,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:08,624 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 132 flow [2024-11-27 20:19:08,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-27 20:19:08,625 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-27 20:19:08,627 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 132 flow [2024-11-27 20:19:08,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:08,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:08,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:08,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:19:08,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:08,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1566819788, now seen corresponding path program 1 times [2024-11-27 20:19:08,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:08,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524817918] [2024-11-27 20:19:08,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:08,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524817918] [2024-11-27 20:19:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524817918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:08,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:08,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:19:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94308903] [2024-11-27 20:19:08,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:08,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:19:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:08,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:19:08,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:19:08,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:08,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 132 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) [2024-11-27 20:19:08,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:08,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:08,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:09,003 INFO L124 PetriNetUnfolderBase]: 272/592 cut-off events. [2024-11-27 20:19:09,003 INFO L125 PetriNetUnfolderBase]: For 476/478 co-relation queries the response was YES. [2024-11-27 20:19:09,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 592 events. 272/592 cut-off events. For 476/478 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2767 event pairs, 56 based on Foata normal form. 25/601 useless extension candidates. Maximal degree in co-relation 680. Up to 237 conditions per place. [2024-11-27 20:19:09,009 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-27 20:19:09,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 294 flow [2024-11-27 20:19:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:19:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:19:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-27 20:19:09,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-27 20:19:09,016 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 132 flow. Second operand 4 states and 96 transitions. [2024-11-27 20:19:09,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 294 flow [2024-11-27 20:19:09,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:19:09,021 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 160 flow [2024-11-27 20:19:09,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-27 20:19:09,022 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-27 20:19:09,024 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 160 flow [2024-11-27 20:19:09,024 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) [2024-11-27 20:19:09,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:09,024 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:09,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:19:09,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:09,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash -877202455, now seen corresponding path program 1 times [2024-11-27 20:19:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:09,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303633849] [2024-11-27 20:19:09,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303633849] [2024-11-27 20:19:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303633849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521486534] [2024-11-27 20:19:09,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:09,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:09,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:09,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:09,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:19:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:09,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:19:09,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:09,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:19:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521486534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:19:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-27 20:19:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471520777] [2024-11-27 20:19:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:09,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:09,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:09,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:09,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:09,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:09,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:09,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:09,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:09,420 INFO L124 PetriNetUnfolderBase]: 242/547 cut-off events. [2024-11-27 20:19:09,420 INFO L125 PetriNetUnfolderBase]: For 621/623 co-relation queries the response was YES. [2024-11-27 20:19:09,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 547 events. 242/547 cut-off events. For 621/623 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2621 event pairs, 202 based on Foata normal form. 24/550 useless extension candidates. Maximal degree in co-relation 627. Up to 430 conditions per place. [2024-11-27 20:19:09,426 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 26 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-11-27 20:19:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 196 flow [2024-11-27 20:19:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:19:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-27 20:19:09,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-27 20:19:09,431 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 160 flow. Second operand 3 states and 57 transitions. [2024-11-27 20:19:09,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 196 flow [2024-11-27 20:19:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:19:09,434 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 138 flow [2024-11-27 20:19:09,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-27 20:19:09,437 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-27 20:19:09,437 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 138 flow [2024-11-27 20:19:09,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:09,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:09,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:09,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:19:09,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:09,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:09,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash 172441602, now seen corresponding path program 1 times [2024-11-27 20:19:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-27 20:19:09,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-27 20:19:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460007656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:09,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:19:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118378621] [2024-11-27 20:19:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:09,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:19:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:09,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:19:09,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:19:09,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:09,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 138 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) [2024-11-27 20:19:09,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:09,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:09,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:09,999 INFO L124 PetriNetUnfolderBase]: 456/885 cut-off events. [2024-11-27 20:19:09,999 INFO L125 PetriNetUnfolderBase]: For 603/639 co-relation queries the response was YES. [2024-11-27 20:19:10,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 885 events. 456/885 cut-off events. For 603/639 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4160 event pairs, 246 based on Foata normal form. 22/881 useless extension candidates. Maximal degree in co-relation 2269. Up to 540 conditions per place. [2024-11-27 20:19:10,007 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-27 20:19:10,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 400 flow [2024-11-27 20:19:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:19:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:19:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-27 20:19:10,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-27 20:19:10,008 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 138 flow. Second operand 4 states and 85 transitions. [2024-11-27 20:19:10,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 400 flow [2024-11-27 20:19:10,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:10,012 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 166 flow [2024-11-27 20:19:10,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-27 20:19:10,013 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-27 20:19:10,013 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 166 flow [2024-11-27 20:19:10,013 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) [2024-11-27 20:19:10,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:10,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:10,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:19:10,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:10,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1199018003, now seen corresponding path program 1 times [2024-11-27 20:19:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405134516] [2024-11-27 20:19:10,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405134516] [2024-11-27 20:19:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405134516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:19:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142392718] [2024-11-27 20:19:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:10,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:10,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:10,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:10,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:10,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 166 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) [2024-11-27 20:19:10,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:10,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:10,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:10,276 INFO L124 PetriNetUnfolderBase]: 396/857 cut-off events. [2024-11-27 20:19:10,276 INFO L125 PetriNetUnfolderBase]: For 785/791 co-relation queries the response was YES. [2024-11-27 20:19:10,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 857 events. 396/857 cut-off events. For 785/791 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4311 event pairs, 324 based on Foata normal form. 3/855 useless extension candidates. Maximal degree in co-relation 2387. Up to 682 conditions per place. [2024-11-27 20:19:10,284 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 30 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2024-11-27 20:19:10,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 226 flow [2024-11-27 20:19:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:19:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-27 20:19:10,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-11-27 20:19:10,286 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 166 flow. Second operand 3 states and 52 transitions. [2024-11-27 20:19:10,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 226 flow [2024-11-27 20:19:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:10,295 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 163 flow [2024-11-27 20:19:10,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-27 20:19:10,297 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-27 20:19:10,298 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 163 flow [2024-11-27 20:19:10,299 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) [2024-11-27 20:19:10,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:10,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:10,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:19:10,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:10,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1177958516, now seen corresponding path program 1 times [2024-11-27 20:19:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140738251] [2024-11-27 20:19:10,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:10,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140738251] [2024-11-27 20:19:10,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140738251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879821890] [2024-11-27 20:19:10,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:10,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:10,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:19:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:10,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:19:10,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:10,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:19:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879821890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:19:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:19:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210681243] [2024-11-27 20:19:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:10,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:19:10,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:10,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:19:10,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:19:10,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:10,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:10,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:10,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:10,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:10,954 INFO L124 PetriNetUnfolderBase]: 436/865 cut-off events. [2024-11-27 20:19:10,955 INFO L125 PetriNetUnfolderBase]: For 767/803 co-relation queries the response was YES. [2024-11-27 20:19:10,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 865 events. 436/865 cut-off events. For 767/803 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4087 event pairs, 59 based on Foata normal form. 26/865 useless extension candidates. Maximal degree in co-relation 2392. Up to 294 conditions per place. [2024-11-27 20:19:10,962 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 74 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-27 20:19:10,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 517 flow [2024-11-27 20:19:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:19:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-11-27 20:19:10,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-27 20:19:10,965 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 163 flow. Second operand 6 states and 124 transitions. [2024-11-27 20:19:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 517 flow [2024-11-27 20:19:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 88 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:10,969 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 172 flow [2024-11-27 20:19:10,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-11-27 20:19:10,970 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-11-27 20:19:10,970 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 172 flow [2024-11-27 20:19:10,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:10,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:10,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:10,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:19:11,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:11,172 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:11,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1358659567, now seen corresponding path program 1 times [2024-11-27 20:19:11,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:11,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849171743] [2024-11-27 20:19:11,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:11,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:11,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:11,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849171743] [2024-11-27 20:19:11,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849171743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:11,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:11,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:19:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803040235] [2024-11-27 20:19:11,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:11,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:11,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:11,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:11,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:11,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 172 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) [2024-11-27 20:19:11,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:11,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:11,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:11,410 INFO L124 PetriNetUnfolderBase]: 396/839 cut-off events. [2024-11-27 20:19:11,410 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2024-11-27 20:19:11,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 839 events. 396/839 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4055 event pairs, 324 based on Foata normal form. 3/839 useless extension candidates. Maximal degree in co-relation 2457. Up to 679 conditions per place. [2024-11-27 20:19:11,418 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 27 selfloop transitions, 1 changer transitions 3/37 dead transitions. [2024-11-27 20:19:11,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 230 flow [2024-11-27 20:19:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:19:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-27 20:19:11,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-27 20:19:11,420 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 172 flow. Second operand 3 states and 51 transitions. [2024-11-27 20:19:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 230 flow [2024-11-27 20:19:11,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 215 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-27 20:19:11,425 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 149 flow [2024-11-27 20:19:11,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-27 20:19:11,427 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-27 20:19:11,428 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 149 flow [2024-11-27 20:19:11,428 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) [2024-11-27 20:19:11,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:11,429 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-27 20:19:11,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:19:11,429 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:11,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2137991977, now seen corresponding path program 1 times [2024-11-27 20:19:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697405] [2024-11-27 20:19:11,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:11,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697405] [2024-11-27 20:19:11,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396177360] [2024-11-27 20:19:11,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:11,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:11,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:11,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:11,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:19:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:11,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:19:11,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:11,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396177360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:11,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:19:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47373747] [2024-11-27 20:19:11,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:11,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:19:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:11,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:19:11,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:19:11,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:11,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 149 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:11,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:11,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:11,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:12,372 INFO L124 PetriNetUnfolderBase]: 889/1725 cut-off events. [2024-11-27 20:19:12,372 INFO L125 PetriNetUnfolderBase]: For 1952/2028 co-relation queries the response was YES. [2024-11-27 20:19:12,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 1725 events. 889/1725 cut-off events. For 1952/2028 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8607 event pairs, 136 based on Foata normal form. 78/1801 useless extension candidates. Maximal degree in co-relation 4802. Up to 606 conditions per place. [2024-11-27 20:19:12,392 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-27 20:19:12,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 153 transitions, 940 flow [2024-11-27 20:19:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:19:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:19:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2024-11-27 20:19:12,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-11-27 20:19:12,395 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 149 flow. Second operand 10 states and 218 transitions. [2024-11-27 20:19:12,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 153 transitions, 940 flow [2024-11-27 20:19:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 153 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:12,404 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 229 flow [2024-11-27 20:19:12,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=229, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-11-27 20:19:12,406 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-11-27 20:19:12,407 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 229 flow [2024-11-27 20:19:12,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:12,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:12,408 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:12,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:19:12,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:19:12,609 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:12,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2140681005, now seen corresponding path program 1 times [2024-11-27 20:19:12,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:12,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682251888] [2024-11-27 20:19:12,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:12,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682251888] [2024-11-27 20:19:12,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682251888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642708513] [2024-11-27 20:19:12,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:12,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:12,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:12,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:12,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:19:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:12,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:19:12,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:12,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642708513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:12,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-27 20:19:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831279666] [2024-11-27 20:19:12,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:12,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:19:12,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:12,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:19:12,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:19:12,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:12,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:12,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:12,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:12,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:13,287 INFO L124 PetriNetUnfolderBase]: 1125/2244 cut-off events. [2024-11-27 20:19:13,287 INFO L125 PetriNetUnfolderBase]: For 4037/4133 co-relation queries the response was YES. [2024-11-27 20:19:13,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 2244 events. 1125/2244 cut-off events. For 4037/4133 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11826 event pairs, 74 based on Foata normal form. 185/2428 useless extension candidates. Maximal degree in co-relation 6888. Up to 741 conditions per place. [2024-11-27 20:19:13,307 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-27 20:19:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 661 flow [2024-11-27 20:19:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:19:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-11-27 20:19:13,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-27 20:19:13,309 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 229 flow. Second operand 6 states and 129 transitions. [2024-11-27 20:19:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 661 flow [2024-11-27 20:19:13,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 641 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-27 20:19:13,320 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 263 flow [2024-11-27 20:19:13,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-11-27 20:19:13,321 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places. [2024-11-27 20:19:13,321 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 263 flow [2024-11-27 20:19:13,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:13,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:13,322 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:13,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:19:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:19:13,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:13,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2002149988, now seen corresponding path program 1 times [2024-11-27 20:19:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701708999] [2024-11-27 20:19:13,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701708999] [2024-11-27 20:19:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701708999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:19:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469656581] [2024-11-27 20:19:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:13,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:13,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:13,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:13,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:13,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:14,132 INFO L124 PetriNetUnfolderBase]: 1357/2840 cut-off events. [2024-11-27 20:19:14,132 INFO L125 PetriNetUnfolderBase]: For 5565/5637 co-relation queries the response was YES. [2024-11-27 20:19:14,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9054 conditions, 2840 events. 1357/2840 cut-off events. For 5565/5637 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16261 event pairs, 254 based on Foata normal form. 34/2873 useless extension candidates. Maximal degree in co-relation 9032. Up to 1501 conditions per place. [2024-11-27 20:19:14,157 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 83 selfloop transitions, 8 changer transitions 2/99 dead transitions. [2024-11-27 20:19:14,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 738 flow [2024-11-27 20:19:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:19:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:19:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-27 20:19:14,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2024-11-27 20:19:14,159 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 263 flow. Second operand 5 states and 108 transitions. [2024-11-27 20:19:14,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 738 flow [2024-11-27 20:19:14,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 731 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-27 20:19:14,179 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 331 flow [2024-11-27 20:19:14,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-11-27 20:19:14,179 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2024-11-27 20:19:14,180 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 331 flow [2024-11-27 20:19:14,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:14,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:14,180 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-27 20:19:14,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:19:14,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:14,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1590456886, now seen corresponding path program 1 times [2024-11-27 20:19:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104639831] [2024-11-27 20:19:14,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104639831] [2024-11-27 20:19:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104639831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642380981] [2024-11-27 20:19:14,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:14,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:14,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:14,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:19:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:14,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:19:14,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:14,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642380981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:14,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-27 20:19:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886091563] [2024-11-27 20:19:14,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:14,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:19:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:14,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:19:14,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:19:14,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:14,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 331 flow. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:14,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:15,722 INFO L124 PetriNetUnfolderBase]: 2544/5337 cut-off events. [2024-11-27 20:19:15,723 INFO L125 PetriNetUnfolderBase]: For 14281/14497 co-relation queries the response was YES. [2024-11-27 20:19:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17640 conditions, 5337 events. 2544/5337 cut-off events. For 14281/14497 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 35770 event pairs, 92 based on Foata normal form. 212/5548 useless extension candidates. Maximal degree in co-relation 17616. Up to 1165 conditions per place. [2024-11-27 20:19:15,792 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 178 selfloop transitions, 28 changer transitions 0/212 dead transitions. [2024-11-27 20:19:15,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 212 transitions, 1586 flow [2024-11-27 20:19:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:19:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:19:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-27 20:19:15,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7064935064935065 [2024-11-27 20:19:15,797 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 331 flow. Second operand 11 states and 272 transitions. [2024-11-27 20:19:15,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 212 transitions, 1586 flow [2024-11-27 20:19:15,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 212 transitions, 1577 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-27 20:19:15,832 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 619 flow [2024-11-27 20:19:15,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=619, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-27 20:19:15,833 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2024-11-27 20:19:15,833 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 619 flow [2024-11-27 20:19:15,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:15,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:15,834 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:15,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:19:16,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:19:16,039 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:16,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 111838555, now seen corresponding path program 1 times [2024-11-27 20:19:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129141041] [2024-11-27 20:19:16,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:16,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129141041] [2024-11-27 20:19:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129141041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780141279] [2024-11-27 20:19:16,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:16,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:19:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:16,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:19:16,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:16,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:19:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780141279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:16,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:19:16,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:19:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659816040] [2024-11-27 20:19:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:16,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:19:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:16,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:19:16,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:19:16,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:16,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:16,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:16,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:17,399 INFO L124 PetriNetUnfolderBase]: 2902/5731 cut-off events. [2024-11-27 20:19:17,399 INFO L125 PetriNetUnfolderBase]: For 19487/19545 co-relation queries the response was YES. [2024-11-27 20:19:17,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20725 conditions, 5731 events. 2902/5731 cut-off events. For 19487/19545 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 37356 event pairs, 499 based on Foata normal form. 233/5730 useless extension candidates. Maximal degree in co-relation 20693. Up to 1789 conditions per place. [2024-11-27 20:19:17,463 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 183 selfloop transitions, 7 changer transitions 0/194 dead transitions. [2024-11-27 20:19:17,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 194 transitions, 2279 flow [2024-11-27 20:19:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:19:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-27 20:19:17,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-27 20:19:17,466 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 619 flow. Second operand 6 states and 114 transitions. [2024-11-27 20:19:17,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 194 transitions, 2279 flow [2024-11-27 20:19:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 194 transitions, 2094 flow, removed 91 selfloop flow, removed 1 redundant places. [2024-11-27 20:19:17,509 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 573 flow [2024-11-27 20:19:17,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-11-27 20:19:17,510 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 46 predicate places. [2024-11-27 20:19:17,511 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 573 flow [2024-11-27 20:19:17,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:17,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:17,511 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:17,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:19:17,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:19:17,712 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:17,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash -719632287, now seen corresponding path program 1 times [2024-11-27 20:19:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817836135] [2024-11-27 20:19:17,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:17,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:17,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817836135] [2024-11-27 20:19:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817836135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318960253] [2024-11-27 20:19:17,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:17,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:17,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:17,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:19:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:17,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:19:17,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:17,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:18,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318960253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:18,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:18,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:19:18,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146873394] [2024-11-27 20:19:18,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:18,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:19:18,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:18,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:19:18,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:19:18,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:18,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:18,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:18,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:18,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:19,431 INFO L124 PetriNetUnfolderBase]: 4592/8804 cut-off events. [2024-11-27 20:19:19,432 INFO L125 PetriNetUnfolderBase]: For 28175/28361 co-relation queries the response was YES. [2024-11-27 20:19:19,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32935 conditions, 8804 events. 4592/8804 cut-off events. For 28175/28361 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 58109 event pairs, 1086 based on Foata normal form. 420/9223 useless extension candidates. Maximal degree in co-relation 32903. Up to 3118 conditions per place. [2024-11-27 20:19:19,521 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 315 selfloop transitions, 13 changer transitions 14/346 dead transitions. [2024-11-27 20:19:19,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 346 transitions, 3884 flow [2024-11-27 20:19:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:19:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:19:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-27 20:19:19,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685714285714286 [2024-11-27 20:19:19,523 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 573 flow. Second operand 10 states and 199 transitions. [2024-11-27 20:19:19,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 346 transitions, 3884 flow [2024-11-27 20:19:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 346 transitions, 3854 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-27 20:19:19,629 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 631 flow [2024-11-27 20:19:19,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=631, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-11-27 20:19:19,630 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 54 predicate places. [2024-11-27 20:19:19,630 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 631 flow [2024-11-27 20:19:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:19,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:19,630 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-27 20:19:19,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:19:19,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:19:19,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:19,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1055818842, now seen corresponding path program 2 times [2024-11-27 20:19:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66650674] [2024-11-27 20:19:19,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:19,847 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:19:19,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:19:19,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66650674] [2024-11-27 20:19:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66650674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253627800] [2024-11-27 20:19:19,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:19,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:19,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:19,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:19,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:19:19,934 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:19:19,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:19,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:19:19,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:19:20,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:19:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253627800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:20,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:19:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385526559] [2024-11-27 20:19:20,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:20,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:20,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:20,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:20,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-27 20:19:20,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 631 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-27 20:19:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:21,227 INFO L124 PetriNetUnfolderBase]: 5071/9381 cut-off events. [2024-11-27 20:19:21,227 INFO L125 PetriNetUnfolderBase]: For 37851/37926 co-relation queries the response was YES. [2024-11-27 20:19:21,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35110 conditions, 9381 events. 5071/9381 cut-off events. For 37851/37926 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 59278 event pairs, 1334 based on Foata normal form. 376/9757 useless extension candidates. Maximal degree in co-relation 35076. Up to 3419 conditions per place. [2024-11-27 20:19:21,286 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 121 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-11-27 20:19:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1385 flow [2024-11-27 20:19:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:19:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:19:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-27 20:19:21,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-27 20:19:21,290 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 631 flow. Second operand 5 states and 84 transitions. [2024-11-27 20:19:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1385 flow [2024-11-27 20:19:21,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 1342 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-27 20:19:21,374 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 638 flow [2024-11-27 20:19:21,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-11-27 20:19:21,378 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-11-27 20:19:21,378 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 638 flow [2024-11-27 20:19:21,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:21,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:21,379 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2024-11-27 20:19:21,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:19:21,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:19:21,580 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:21,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1260677325, now seen corresponding path program 2 times [2024-11-27 20:19:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893844054] [2024-11-27 20:19:21,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:21,597 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:19:21,597 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:21,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893844054] [2024-11-27 20:19:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893844054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536100470] [2024-11-27 20:19:21,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:21,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:21,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:21,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:19:21,893 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:19:21,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:21,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:19:21,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:22,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:22,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536100470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:22,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:22,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-27 20:19:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258575030] [2024-11-27 20:19:22,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:22,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:19:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:22,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:19:22,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:19:22,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:22,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 638 flow. Second operand has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:22,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:22,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:22,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:26,003 INFO L124 PetriNetUnfolderBase]: 11167/21524 cut-off events. [2024-11-27 20:19:26,003 INFO L125 PetriNetUnfolderBase]: For 131844/132111 co-relation queries the response was YES. [2024-11-27 20:19:26,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81661 conditions, 21524 events. 11167/21524 cut-off events. For 131844/132111 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 153131 event pairs, 298 based on Foata normal form. 624/22145 useless extension candidates. Maximal degree in co-relation 81628. Up to 4339 conditions per place. [2024-11-27 20:19:26,164 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 492 selfloop transitions, 94 changer transitions 0/591 dead transitions. [2024-11-27 20:19:26,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 591 transitions, 4989 flow [2024-11-27 20:19:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:19:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 20:19:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 542 transitions. [2024-11-27 20:19:26,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7374149659863946 [2024-11-27 20:19:26,168 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 638 flow. Second operand 21 states and 542 transitions. [2024-11-27 20:19:26,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 591 transitions, 4989 flow [2024-11-27 20:19:26,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 591 transitions, 4887 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:19:26,366 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 1624 flow [2024-11-27 20:19:26,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1624, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2024-11-27 20:19:26,367 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 87 predicate places. [2024-11-27 20:19:26,367 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 1624 flow [2024-11-27 20:19:26,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:26,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:26,368 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:26,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:19:26,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:19:26,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:26,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2038317118, now seen corresponding path program 2 times [2024-11-27 20:19:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408207169] [2024-11-27 20:19:26,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:26,582 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:19:26,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:19:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:26,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408207169] [2024-11-27 20:19:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408207169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:26,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117903364] [2024-11-27 20:19:26,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:26,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:26,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:26,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:26,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:19:26,703 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:19:26,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:26,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:19:26,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:19:26,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 20:19:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117903364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:26,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:26,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:19:26,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272557263] [2024-11-27 20:19:26,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:26,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:26,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:26,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:26,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-27 20:19:26,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 1624 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:26,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:26,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-27 20:19:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:30,893 INFO L124 PetriNetUnfolderBase]: 11167/21553 cut-off events. [2024-11-27 20:19:30,893 INFO L125 PetriNetUnfolderBase]: For 113642/113642 co-relation queries the response was YES. [2024-11-27 20:19:31,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85704 conditions, 21553 events. 11167/21553 cut-off events. For 113642/113642 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 155088 event pairs, 1880 based on Foata normal form. 445/21997 useless extension candidates. Maximal degree in co-relation 85652. Up to 7645 conditions per place. [2024-11-27 20:19:31,104 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 246 selfloop transitions, 15 changer transitions 6/271 dead transitions. [2024-11-27 20:19:31,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 271 transitions, 3851 flow [2024-11-27 20:19:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:19:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:19:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-11-27 20:19:31,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-11-27 20:19:31,105 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 1624 flow. Second operand 5 states and 86 transitions. [2024-11-27 20:19:31,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 271 transitions, 3851 flow [2024-11-27 20:19:31,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 271 transitions, 3405 flow, removed 176 selfloop flow, removed 9 redundant places. [2024-11-27 20:19:31,380 INFO L231 Difference]: Finished difference. Result has 119 places, 138 transitions, 1460 flow [2024-11-27 20:19:31,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1460, PETRI_PLACES=119, PETRI_TRANSITIONS=138} [2024-11-27 20:19:31,381 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2024-11-27 20:19:31,381 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 138 transitions, 1460 flow [2024-11-27 20:19:31,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:31,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:31,381 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2024-11-27 20:19:31,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:19:31,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:19:31,582 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:31,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1176413331, now seen corresponding path program 3 times [2024-11-27 20:19:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969138032] [2024-11-27 20:19:31,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:19:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:31,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-27 20:19:31,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969138032] [2024-11-27 20:19:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969138032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68409948] [2024-11-27 20:19:32,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:19:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:32,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:19:32,881 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-27 20:19:32,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:32,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 20:19:32,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:33,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68409948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:33,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:33,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2024-11-27 20:19:33,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567373093] [2024-11-27 20:19:33,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:34,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 20:19:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:34,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 20:19:34,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:19:34,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:34,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 138 transitions, 1460 flow. Second operand has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:34,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:19:43,092 INFO L124 PetriNetUnfolderBase]: 20198/40547 cut-off events. [2024-11-27 20:19:43,092 INFO L125 PetriNetUnfolderBase]: For 613388/613392 co-relation queries the response was YES. [2024-11-27 20:19:43,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160196 conditions, 40547 events. 20198/40547 cut-off events. For 613388/613392 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 298748 event pairs, 395 based on Foata normal form. 1174/41718 useless extension candidates. Maximal degree in co-relation 160150. Up to 7963 conditions per place. [2024-11-27 20:19:43,443 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 933 selfloop transitions, 330 changer transitions 0/1267 dead transitions. [2024-11-27 20:19:43,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 1267 transitions, 12195 flow [2024-11-27 20:19:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 20:19:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-27 20:19:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1004 transitions. [2024-11-27 20:19:43,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6996515679442509 [2024-11-27 20:19:43,448 INFO L175 Difference]: Start difference. First operand has 119 places, 138 transitions, 1460 flow. Second operand 41 states and 1004 transitions. [2024-11-27 20:19:43,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 1267 transitions, 12195 flow [2024-11-27 20:19:43,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 1267 transitions, 11492 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:19:43,767 INFO L231 Difference]: Finished difference. Result has 192 places, 374 transitions, 4853 flow [2024-11-27 20:19:43,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4853, PETRI_PLACES=192, PETRI_TRANSITIONS=374} [2024-11-27 20:19:43,768 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 155 predicate places. [2024-11-27 20:19:43,768 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 374 transitions, 4853 flow [2024-11-27 20:19:43,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:43,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:19:43,769 INFO L206 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2024-11-27 20:19:43,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:19:43,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:43,969 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:19:43,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1876658349, now seen corresponding path program 4 times [2024-11-27 20:19:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219647403] [2024-11-27 20:19:43,971 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:19:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:44,121 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:19:44,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219647403] [2024-11-27 20:19:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219647403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999105203] [2024-11-27 20:19:47,640 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:19:47,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:47,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:47,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c31c41-7340-4e38-86d0-3242e964738e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:19:47,819 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:19:47,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:47,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-27 20:19:47,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:48,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:19:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999105203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:51,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2024-11-27 20:19:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091507506] [2024-11-27 20:19:51,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:51,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-27 20:19:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:51,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-27 20:19:51,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 20:19:51,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-27 20:19:51,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 374 transitions, 4853 flow. Second operand has 81 states, 81 states have (on average 14.962962962962964) internal successors, (1212), 81 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:19:51,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:19:51,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-27 20:19:51,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand