./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX --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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 12:23:08,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 12:23:08,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 12:23:08,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 12:23:08,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 12:23:08,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 12:23:08,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 12:23:08,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 12:23:08,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 12:23:08,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 12:23:08,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 12:23:08,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 12:23:08,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 12:23:08,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 12:23:08,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 12:23:08,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 12:23:08,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 12:23:08,795 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 12:23:08,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 12:23:08,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 12:23:08,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 12:23:08,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 12:23:08,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 12:23:08,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 12:23:08,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 12:23:08,798 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 12:23:08,798 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 12:23:08,798 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 12:23:08,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 12:23:08,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 12:23:08,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 12:23:08,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 12:23:08,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 12:23:08,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 12:23:08,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:23:08,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 12:23:08,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 12:23:08,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 12:23:08,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 12:23:08,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 12:23:08,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 12:23:08,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 12:23:08,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 12:23:08,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 12:23:08,807 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-08 12:23:09,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 12:23:09,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 12:23:09,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 12:23:09,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 12:23:09,174 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 12:23:09,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c Unable to find full path for "g++" [2024-11-08 12:23:11,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 12:23:11,332 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 12:23:11,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-08 12:23:11,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/data/1afa08111/e8055bdd23fb4d6eb46b0c8b3e03196a/FLAG6dc047177 [2024-11-08 12:23:11,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/data/1afa08111/e8055bdd23fb4d6eb46b0c8b3e03196a [2024-11-08 12:23:11,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 12:23:11,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 12:23:11,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 12:23:11,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 12:23:11,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 12:23:11,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3e9d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11, skipping insertion in model container [2024-11-08 12:23:11,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 12:23:11,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:23:11,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 12:23:11,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:23:11,790 INFO L204 MainTranslator]: Completed translation [2024-11-08 12:23:11,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11 WrapperNode [2024-11-08 12:23:11,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 12:23:11,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 12:23:11,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 12:23:11,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 12:23:11,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,832 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 113 [2024-11-08 12:23:11,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 12:23:11,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 12:23:11,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 12:23:11,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 12:23:11,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,871 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 12:23:11,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 12:23:11,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 12:23:11,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 12:23:11,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 12:23:11,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (1/1) ... [2024-11-08 12:23:11,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:23:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:11,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 12:23:11,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 12:23:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 12:23:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 12:23:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 12:23:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 12:23:11,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 12:23:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 12:23:11,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 12:23:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 12:23:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 12:23:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 12:23:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 12:23:11,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 12:23:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 12:23:11,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 12:23:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 12:23:11,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 12:23:11,994 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 12:23:12,128 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 12:23:12,130 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 12:23:12,506 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 12:23:12,506 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 12:23:12,785 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 12:23:12,785 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 12:23:12,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:23:12 BoogieIcfgContainer [2024-11-08 12:23:12,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 12:23:12,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 12:23:12,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 12:23:12,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 12:23:12,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 12:23:11" (1/3) ... [2024-11-08 12:23:12,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dce92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:23:12, skipping insertion in model container [2024-11-08 12:23:12,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:23:11" (2/3) ... [2024-11-08 12:23:12,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dce92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:23:12, skipping insertion in model container [2024-11-08 12:23:12,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:23:12" (3/3) ... [2024-11-08 12:23:12,802 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-08 12:23:12,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 12:23:12,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-08 12:23:12,821 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 12:23:12,888 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 12:23:12,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 169 flow [2024-11-08 12:23:12,977 INFO L124 PetriNetUnfolderBase]: 11/71 cut-off events. [2024-11-08 12:23:12,977 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 12:23:12,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 11/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2024-11-08 12:23:12,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 169 flow [2024-11-08 12:23:12,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 153 flow [2024-11-08 12:23:12,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 12:23:13,002 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;@2a803f1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 12:23:13,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-08 12:23:13,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 12:23:13,007 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 12:23:13,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 12:23:13,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:13,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 12:23:13,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:13,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 15098905, now seen corresponding path program 1 times [2024-11-08 12:23:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138686642] [2024-11-08 12:23:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:13,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:13,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138686642] [2024-11-08 12:23:13,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138686642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:13,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:13,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 12:23:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909202647] [2024-11-08 12:23:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:13,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:23:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:23:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:23:13,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2024-11-08 12:23:13,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-08 12:23:13,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:13,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2024-11-08 12:23:13,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:14,019 INFO L124 PetriNetUnfolderBase]: 869/2018 cut-off events. [2024-11-08 12:23:14,020 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-08 12:23:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 2018 events. 869/2018 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14551 event pairs, 608 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 3004. Up to 1144 conditions per place. [2024-11-08 12:23:14,050 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 33 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-11-08 12:23:14,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 245 flow [2024-11-08 12:23:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:23:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 12:23:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-08 12:23:14,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-08 12:23:14,068 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 153 flow. Second operand 4 states and 196 transitions. [2024-11-08 12:23:14,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 245 flow [2024-11-08 12:23:14,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 236 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 12:23:14,082 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 204 flow [2024-11-08 12:23:14,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2024-11-08 12:23:14,092 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2024-11-08 12:23:14,092 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 204 flow [2024-11-08 12:23:14,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-08 12:23:14,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:14,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 12:23:14,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 12:23:14,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:14,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1587151718, now seen corresponding path program 1 times [2024-11-08 12:23:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:14,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841798460] [2024-11-08 12:23:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841798460] [2024-11-08 12:23:14,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841798460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:14,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065495044] [2024-11-08 12:23:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:14,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:14,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 12:23:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:14,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 12:23:14,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:14,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 12:23:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065495044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 12:23:14,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 12:23:14,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830960011] [2024-11-08 12:23:14,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:14,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 12:23:14,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 12:23:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 12:23:14,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2024-11-08 12:23:14,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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) [2024-11-08 12:23:14,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:14,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2024-11-08 12:23:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:14,944 INFO L124 PetriNetUnfolderBase]: 869/2016 cut-off events. [2024-11-08 12:23:14,944 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-08 12:23:14,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 2016 events. 869/2016 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14530 event pairs, 608 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 3189. Up to 1134 conditions per place. [2024-11-08 12:23:14,960 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 26 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-11-08 12:23:14,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 272 flow [2024-11-08 12:23:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2024-11-08 12:23:14,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-08 12:23:14,966 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 204 flow. Second operand 6 states and 268 transitions. [2024-11-08 12:23:14,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 272 flow [2024-11-08 12:23:14,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 12:23:14,971 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 220 flow [2024-11-08 12:23:14,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-11-08 12:23:14,976 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-11-08 12:23:14,976 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 220 flow [2024-11-08 12:23:14,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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) [2024-11-08 12:23:14,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:14,977 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 12:23:15,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 12:23:15,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:15,178 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:15,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1957062488, now seen corresponding path program 1 times [2024-11-08 12:23:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271346468] [2024-11-08 12:23:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271346468] [2024-11-08 12:23:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271346468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908307628] [2024-11-08 12:23:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:15,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:15,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:15,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 12:23:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:15,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 12:23:15,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:15,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:15,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908307628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:15,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:15,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 12:23:15,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142751029] [2024-11-08 12:23:15,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:15,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 12:23:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 12:23:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 12:23:15,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2024-11-08 12:23:15,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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) [2024-11-08 12:23:15,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:15,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2024-11-08 12:23:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:16,127 INFO L124 PetriNetUnfolderBase]: 881/2058 cut-off events. [2024-11-08 12:23:16,127 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-08 12:23:16,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 2058 events. 881/2058 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14981 event pairs, 608 based on Foata normal form. 6/1709 useless extension candidates. Maximal degree in co-relation 3191. Up to 1145 conditions per place. [2024-11-08 12:23:16,143 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 31 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2024-11-08 12:23:16,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 446 flow [2024-11-08 12:23:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 12:23:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 12:23:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 442 transitions. [2024-11-08 12:23:16,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972972972972973 [2024-11-08 12:23:16,146 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 220 flow. Second operand 10 states and 442 transitions. [2024-11-08 12:23:16,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 446 flow [2024-11-08 12:23:16,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 388 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-08 12:23:16,151 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 360 flow [2024-11-08 12:23:16,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-11-08 12:23:16,152 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-11-08 12:23:16,152 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 360 flow [2024-11-08 12:23:16,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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) [2024-11-08 12:23:16,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:16,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:16,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 12:23:16,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:16,354 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:16,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash 182186335, now seen corresponding path program 1 times [2024-11-08 12:23:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896463734] [2024-11-08 12:23:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896463734] [2024-11-08 12:23:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896463734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:16,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:16,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 12:23:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527144873] [2024-11-08 12:23:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:16,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:23:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:23:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:23:16,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:16,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-11-08 12:23:16,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:16,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:16,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:16,961 INFO L124 PetriNetUnfolderBase]: 1740/3315 cut-off events. [2024-11-08 12:23:16,961 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-08 12:23:16,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 3315 events. 1740/3315 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21993 event pairs, 858 based on Foata normal form. 62/2855 useless extension candidates. Maximal degree in co-relation 5714. Up to 1643 conditions per place. [2024-11-08 12:23:16,988 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 86 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-08 12:23:16,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 614 flow [2024-11-08 12:23:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:23:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 12:23:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2024-11-08 12:23:16,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2024-11-08 12:23:16,990 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 360 flow. Second operand 4 states and 228 transitions. [2024-11-08 12:23:16,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 614 flow [2024-11-08 12:23:16,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 590 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-08 12:23:16,997 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 365 flow [2024-11-08 12:23:16,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=365, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-11-08 12:23:16,999 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2024-11-08 12:23:17,000 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 365 flow [2024-11-08 12:23:17,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-11-08 12:23:17,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:17,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:17,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 12:23:17,001 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:17,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1007757964, now seen corresponding path program 1 times [2024-11-08 12:23:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20021241] [2024-11-08 12:23:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:17,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20021241] [2024-11-08 12:23:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20021241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 12:23:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332857172] [2024-11-08 12:23:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:17,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:23:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:23:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:23:17,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 74 [2024-11-08 12:23:17,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-11-08 12:23:17,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:17,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 74 [2024-11-08 12:23:17,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:18,010 INFO L124 PetriNetUnfolderBase]: 3373/6204 cut-off events. [2024-11-08 12:23:18,010 INFO L125 PetriNetUnfolderBase]: For 1737/1905 co-relation queries the response was YES. [2024-11-08 12:23:18,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12484 conditions, 6204 events. 3373/6204 cut-off events. For 1737/1905 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 42870 event pairs, 1450 based on Foata normal form. 101/5657 useless extension candidates. Maximal degree in co-relation 12411. Up to 3018 conditions per place. [2024-11-08 12:23:18,061 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 95 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-08 12:23:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 685 flow [2024-11-08 12:23:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:23:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 12:23:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-11-08 12:23:18,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7567567567567568 [2024-11-08 12:23:18,063 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 365 flow. Second operand 4 states and 224 transitions. [2024-11-08 12:23:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 685 flow [2024-11-08 12:23:18,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 133 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 12:23:18,072 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 391 flow [2024-11-08 12:23:18,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-11-08 12:23:18,073 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-11-08 12:23:18,073 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 391 flow [2024-11-08 12:23:18,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2024-11-08 12:23:18,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:18,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:18,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 12:23:18,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:18,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -561589387, now seen corresponding path program 1 times [2024-11-08 12:23:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218189141] [2024-11-08 12:23:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:18,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218189141] [2024-11-08 12:23:18,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218189141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:18,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:18,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 12:23:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797552506] [2024-11-08 12:23:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:18,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:23:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:23:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:23:18,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:18,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-08 12:23:18,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:18,951 INFO L124 PetriNetUnfolderBase]: 2843/5603 cut-off events. [2024-11-08 12:23:18,951 INFO L125 PetriNetUnfolderBase]: For 1968/2207 co-relation queries the response was YES. [2024-11-08 12:23:18,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11744 conditions, 5603 events. 2843/5603 cut-off events. For 1968/2207 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 40105 event pairs, 505 based on Foata normal form. 137/5252 useless extension candidates. Maximal degree in co-relation 11669. Up to 2576 conditions per place. [2024-11-08 12:23:19,001 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 89 selfloop transitions, 4 changer transitions 2/131 dead transitions. [2024-11-08 12:23:19,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 693 flow [2024-11-08 12:23:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:23:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 12:23:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2024-11-08 12:23:19,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-08 12:23:19,005 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 391 flow. Second operand 4 states and 222 transitions. [2024-11-08 12:23:19,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 693 flow [2024-11-08 12:23:19,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 12:23:19,011 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 413 flow [2024-11-08 12:23:19,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-11-08 12:23:19,012 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 22 predicate places. [2024-11-08 12:23:19,013 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 413 flow [2024-11-08 12:23:19,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-08 12:23:19,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:19,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:19,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 12:23:19,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:19,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1485789465, now seen corresponding path program 1 times [2024-11-08 12:23:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677159341] [2024-11-08 12:23:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 12:23:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677159341] [2024-11-08 12:23:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677159341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:19,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:19,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 12:23:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328694994] [2024-11-08 12:23:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:19,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:19,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:19,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-08 12:23:19,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 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) [2024-11-08 12:23:19,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:19,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-08 12:23:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:20,369 INFO L124 PetriNetUnfolderBase]: 4063/8091 cut-off events. [2024-11-08 12:23:20,369 INFO L125 PetriNetUnfolderBase]: For 2796/3034 co-relation queries the response was YES. [2024-11-08 12:23:20,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16917 conditions, 8091 events. 4063/8091 cut-off events. For 2796/3034 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 60586 event pairs, 2697 based on Foata normal form. 193/7529 useless extension candidates. Maximal degree in co-relation 16803. Up to 4188 conditions per place. [2024-11-08 12:23:20,432 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 114 selfloop transitions, 15 changer transitions 0/163 dead transitions. [2024-11-08 12:23:20,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 163 transitions, 902 flow [2024-11-08 12:23:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2024-11-08 12:23:20,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914414414414415 [2024-11-08 12:23:20,434 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 413 flow. Second operand 6 states and 307 transitions. [2024-11-08 12:23:20,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 163 transitions, 902 flow [2024-11-08 12:23:20,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 902 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 12:23:20,442 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 497 flow [2024-11-08 12:23:20,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-11-08 12:23:20,443 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 30 predicate places. [2024-11-08 12:23:20,443 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 497 flow [2024-11-08 12:23:20,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 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) [2024-11-08 12:23:20,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:20,444 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 12:23:20,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 12:23:20,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:20,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1209953659, now seen corresponding path program 2 times [2024-11-08 12:23:20,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:20,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140225730] [2024-11-08 12:23:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:20,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140225730] [2024-11-08 12:23:20,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140225730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862768218] [2024-11-08 12:23:20,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 12:23:20,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:20,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:20,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 12:23:20,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 12:23:20,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 12:23:20,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 12:23:20,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 12:23:20,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 12:23:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862768218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:20,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:20,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 12:23:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928919020] [2024-11-08 12:23:20,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:20,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 12:23:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:20,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 12:23:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 12:23:20,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-08 12:23:20,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 497 flow. Second operand has 15 states, 15 states have (on average 33.53333333333333) internal successors, (503), 15 states have internal predecessors, (503), 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) [2024-11-08 12:23:20,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:20,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-08 12:23:20,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:22,344 INFO L124 PetriNetUnfolderBase]: 2909/5936 cut-off events. [2024-11-08 12:23:22,345 INFO L125 PetriNetUnfolderBase]: For 3587/3873 co-relation queries the response was YES. [2024-11-08 12:23:22,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13439 conditions, 5936 events. 2909/5936 cut-off events. For 3587/3873 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 43608 event pairs, 2011 based on Foata normal form. 123/5557 useless extension candidates. Maximal degree in co-relation 13197. Up to 3809 conditions per place. [2024-11-08 12:23:22,393 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 63 selfloop transitions, 54 changer transitions 0/149 dead transitions. [2024-11-08 12:23:22,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 149 transitions, 899 flow [2024-11-08 12:23:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 12:23:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 12:23:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 974 transitions. [2024-11-08 12:23:22,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4874874874874875 [2024-11-08 12:23:22,397 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 497 flow. Second operand 27 states and 974 transitions. [2024-11-08 12:23:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 149 transitions, 899 flow [2024-11-08 12:23:22,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 149 transitions, 899 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 12:23:22,410 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 738 flow [2024-11-08 12:23:22,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=738, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2024-11-08 12:23:22,412 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 58 predicate places. [2024-11-08 12:23:22,413 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 738 flow [2024-11-08 12:23:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 33.53333333333333) internal successors, (503), 15 states have internal predecessors, (503), 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) [2024-11-08 12:23:22,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:22,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:22,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 12:23:22,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:22,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:22,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2056827823, now seen corresponding path program 1 times [2024-11-08 12:23:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064553535] [2024-11-08 12:23:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:22,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064553535] [2024-11-08 12:23:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064553535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:22,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 12:23:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639275519] [2024-11-08 12:23:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:22,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:22,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 738 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:22,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:22,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:22,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:24,086 INFO L124 PetriNetUnfolderBase]: 5044/10037 cut-off events. [2024-11-08 12:23:24,086 INFO L125 PetriNetUnfolderBase]: For 6858/7316 co-relation queries the response was YES. [2024-11-08 12:23:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22929 conditions, 10037 events. 5044/10037 cut-off events. For 6858/7316 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 78945 event pairs, 1544 based on Foata normal form. 338/9577 useless extension candidates. Maximal degree in co-relation 22821. Up to 3832 conditions per place. [2024-11-08 12:23:24,180 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 143 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2024-11-08 12:23:24,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 206 transitions, 1358 flow [2024-11-08 12:23:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-11-08 12:23:24,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-08 12:23:24,186 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 738 flow. Second operand 6 states and 333 transitions. [2024-11-08 12:23:24,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 206 transitions, 1358 flow [2024-11-08 12:23:24,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 206 transitions, 1231 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-11-08 12:23:24,215 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 696 flow [2024-11-08 12:23:24,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=696, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2024-11-08 12:23:24,216 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2024-11-08 12:23:24,217 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 696 flow [2024-11-08 12:23:24,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:24,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:24,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:24,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 12:23:24,218 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:24,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1944464529, now seen corresponding path program 2 times [2024-11-08 12:23:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:24,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625246173] [2024-11-08 12:23:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:24,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625246173] [2024-11-08 12:23:24,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625246173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:24,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:24,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 12:23:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261329011] [2024-11-08 12:23:24,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:24,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:24,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:24,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:24,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:24,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:24,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:26,100 INFO L124 PetriNetUnfolderBase]: 7365/14460 cut-off events. [2024-11-08 12:23:26,100 INFO L125 PetriNetUnfolderBase]: For 14908/16076 co-relation queries the response was YES. [2024-11-08 12:23:26,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34473 conditions, 14460 events. 7365/14460 cut-off events. For 14908/16076 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 117337 event pairs, 2423 based on Foata normal form. 424/13347 useless extension candidates. Maximal degree in co-relation 34377. Up to 4143 conditions per place. [2024-11-08 12:23:26,279 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 146 selfloop transitions, 11 changer transitions 0/209 dead transitions. [2024-11-08 12:23:26,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 209 transitions, 1325 flow [2024-11-08 12:23:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 327 transitions. [2024-11-08 12:23:26,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-11-08 12:23:26,281 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 696 flow. Second operand 6 states and 327 transitions. [2024-11-08 12:23:26,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 209 transitions, 1325 flow [2024-11-08 12:23:26,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 209 transitions, 1314 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 12:23:26,327 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 768 flow [2024-11-08 12:23:26,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2024-11-08 12:23:26,329 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 65 predicate places. [2024-11-08 12:23:26,330 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 768 flow [2024-11-08 12:23:26,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:26,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:26,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:26,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 12:23:26,332 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:26,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash 188571427, now seen corresponding path program 3 times [2024-11-08 12:23:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:26,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392150943] [2024-11-08 12:23:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:26,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:26,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:26,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392150943] [2024-11-08 12:23:26,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392150943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:26,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:26,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 12:23:26,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74397280] [2024-11-08 12:23:26,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:26,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:26,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:26,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:26,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 768 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:26,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:26,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:26,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:28,664 INFO L124 PetriNetUnfolderBase]: 7623/14616 cut-off events. [2024-11-08 12:23:28,664 INFO L125 PetriNetUnfolderBase]: For 24684/25820 co-relation queries the response was YES. [2024-11-08 12:23:28,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36935 conditions, 14616 events. 7623/14616 cut-off events. For 24684/25820 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 113012 event pairs, 1454 based on Foata normal form. 242/13404 useless extension candidates. Maximal degree in co-relation 36835. Up to 5130 conditions per place. [2024-11-08 12:23:28,778 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 140 selfloop transitions, 18 changer transitions 0/210 dead transitions. [2024-11-08 12:23:28,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 210 transitions, 1374 flow [2024-11-08 12:23:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 331 transitions. [2024-11-08 12:23:28,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7454954954954955 [2024-11-08 12:23:28,780 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 768 flow. Second operand 6 states and 331 transitions. [2024-11-08 12:23:28,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 210 transitions, 1374 flow [2024-11-08 12:23:28,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 210 transitions, 1353 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-08 12:23:28,837 INFO L231 Difference]: Finished difference. Result has 139 places, 144 transitions, 833 flow [2024-11-08 12:23:28,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=139, PETRI_TRANSITIONS=144} [2024-11-08 12:23:28,837 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-11-08 12:23:28,838 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 144 transitions, 833 flow [2024-11-08 12:23:28,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-08 12:23:28,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:28,838 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:28,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 12:23:28,839 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:28,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1784596758, now seen corresponding path program 1 times [2024-11-08 12:23:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:28,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843890474] [2024-11-08 12:23:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:28,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 12:23:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843890474] [2024-11-08 12:23:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843890474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 12:23:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153785729] [2024-11-08 12:23:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:28,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:29,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-08 12:23:29,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 144 transitions, 833 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2024-11-08 12:23:29,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:29,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-08 12:23:29,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:30,994 INFO L124 PetriNetUnfolderBase]: 6977/13341 cut-off events. [2024-11-08 12:23:30,995 INFO L125 PetriNetUnfolderBase]: For 21490/22252 co-relation queries the response was YES. [2024-11-08 12:23:31,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33673 conditions, 13341 events. 6977/13341 cut-off events. For 21490/22252 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 100684 event pairs, 4973 based on Foata normal form. 60/12625 useless extension candidates. Maximal degree in co-relation 33567. Up to 8712 conditions per place. [2024-11-08 12:23:31,134 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 99 selfloop transitions, 12 changer transitions 48/198 dead transitions. [2024-11-08 12:23:31,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 198 transitions, 1458 flow [2024-11-08 12:23:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 12:23:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 12:23:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2024-11-08 12:23:31,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-08 12:23:31,136 INFO L175 Difference]: Start difference. First operand has 139 places, 144 transitions, 833 flow. Second operand 6 states and 294 transitions. [2024-11-08 12:23:31,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 198 transitions, 1458 flow [2024-11-08 12:23:31,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 198 transitions, 1402 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-08 12:23:31,190 INFO L231 Difference]: Finished difference. Result has 142 places, 137 transitions, 782 flow [2024-11-08 12:23:31,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=782, PETRI_PLACES=142, PETRI_TRANSITIONS=137} [2024-11-08 12:23:31,192 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 74 predicate places. [2024-11-08 12:23:31,193 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 137 transitions, 782 flow [2024-11-08 12:23:31,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2024-11-08 12:23:31,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:31,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:31,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 12:23:31,194 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:31,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash -267541556, now seen corresponding path program 1 times [2024-11-08 12:23:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40574603] [2024-11-08 12:23:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 12:23:31,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40574603] [2024-11-08 12:23:31,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40574603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938749460] [2024-11-08 12:23:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:31,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:31,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:31,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 12:23:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:31,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 12:23:31,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 12:23:31,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 12:23:31,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938749460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:31,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:31,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-08 12:23:31,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116295168] [2024-11-08 12:23:31,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:31,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 12:23:31,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 12:23:31,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 12:23:32,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-08 12:23:32,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 137 transitions, 782 flow. Second operand has 19 states, 19 states have (on average 29.05263157894737) internal successors, (552), 19 states have internal predecessors, (552), 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) [2024-11-08 12:23:32,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:32,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-08 12:23:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:36,247 INFO L124 PetriNetUnfolderBase]: 12906/20845 cut-off events. [2024-11-08 12:23:36,248 INFO L125 PetriNetUnfolderBase]: For 25979/27436 co-relation queries the response was YES. [2024-11-08 12:23:36,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54624 conditions, 20845 events. 12906/20845 cut-off events. For 25979/27436 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 149553 event pairs, 1625 based on Foata normal form. 717/19909 useless extension candidates. Maximal degree in co-relation 54474. Up to 2942 conditions per place. [2024-11-08 12:23:36,414 INFO L140 encePairwiseOnDemand]: 53/74 looper letters, 385 selfloop transitions, 63 changer transitions 0/479 dead transitions. [2024-11-08 12:23:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 479 transitions, 3852 flow [2024-11-08 12:23:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 12:23:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 12:23:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 746 transitions. [2024-11-08 12:23:36,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5305832147937412 [2024-11-08 12:23:36,418 INFO L175 Difference]: Start difference. First operand has 142 places, 137 transitions, 782 flow. Second operand 19 states and 746 transitions. [2024-11-08 12:23:36,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 479 transitions, 3852 flow [2024-11-08 12:23:36,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 479 transitions, 3729 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-11-08 12:23:36,640 INFO L231 Difference]: Finished difference. Result has 155 places, 168 transitions, 1110 flow [2024-11-08 12:23:36,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1110, PETRI_PLACES=155, PETRI_TRANSITIONS=168} [2024-11-08 12:23:36,641 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 87 predicate places. [2024-11-08 12:23:36,641 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 168 transitions, 1110 flow [2024-11-08 12:23:36,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.05263157894737) internal successors, (552), 19 states have internal predecessors, (552), 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) [2024-11-08 12:23:36,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:36,641 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1] [2024-11-08 12:23:36,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 12:23:36,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:36,842 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:36,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1799462930, now seen corresponding path program 1 times [2024-11-08 12:23:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511812323] [2024-11-08 12:23:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-08 12:23:36,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511812323] [2024-11-08 12:23:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511812323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:23:36,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:23:36,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 12:23:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027940304] [2024-11-08 12:23:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:23:36,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:23:36,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:23:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:23:37,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-08 12:23:37,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 168 transitions, 1110 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-08 12:23:37,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:37,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-08 12:23:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:39,104 INFO L124 PetriNetUnfolderBase]: 8230/16544 cut-off events. [2024-11-08 12:23:39,104 INFO L125 PetriNetUnfolderBase]: For 24314/25204 co-relation queries the response was YES. [2024-11-08 12:23:39,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42881 conditions, 16544 events. 8230/16544 cut-off events. For 24314/25204 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 137514 event pairs, 5819 based on Foata normal form. 131/15324 useless extension candidates. Maximal degree in co-relation 42760. Up to 10447 conditions per place. [2024-11-08 12:23:39,221 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 110 selfloop transitions, 14 changer transitions 3/169 dead transitions. [2024-11-08 12:23:39,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 1361 flow [2024-11-08 12:23:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:23:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 12:23:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2024-11-08 12:23:39,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-11-08 12:23:39,223 INFO L175 Difference]: Start difference. First operand has 155 places, 168 transitions, 1110 flow. Second operand 4 states and 190 transitions. [2024-11-08 12:23:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 1361 flow [2024-11-08 12:23:39,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 169 transitions, 1293 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-08 12:23:39,283 INFO L231 Difference]: Finished difference. Result has 150 places, 164 transitions, 1045 flow [2024-11-08 12:23:39,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1045, PETRI_PLACES=150, PETRI_TRANSITIONS=164} [2024-11-08 12:23:39,284 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 82 predicate places. [2024-11-08 12:23:39,284 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 164 transitions, 1045 flow [2024-11-08 12:23:39,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-08 12:23:39,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:39,284 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:39,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 12:23:39,284 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:39,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1125064349, now seen corresponding path program 1 times [2024-11-08 12:23:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448540356] [2024-11-08 12:23:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 12:23:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448540356] [2024-11-08 12:23:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448540356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849156230] [2024-11-08 12:23:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:39,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:39,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:39,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 12:23:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:39,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 12:23:39,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 12:23:39,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 12:23:39,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849156230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:39,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:39,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-08 12:23:39,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440867621] [2024-11-08 12:23:39,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:39,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 12:23:39,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:39,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 12:23:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 12:23:40,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 74 [2024-11-08 12:23:40,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 164 transitions, 1045 flow. Second operand has 19 states, 19 states have (on average 28.526315789473685) internal successors, (542), 19 states have internal predecessors, (542), 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) [2024-11-08 12:23:40,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:40,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 74 [2024-11-08 12:23:40,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:44,396 INFO L124 PetriNetUnfolderBase]: 12332/21222 cut-off events. [2024-11-08 12:23:44,396 INFO L125 PetriNetUnfolderBase]: For 24344/24846 co-relation queries the response was YES. [2024-11-08 12:23:44,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53930 conditions, 21222 events. 12332/21222 cut-off events. For 24344/24846 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 155282 event pairs, 1784 based on Foata normal form. 198/19110 useless extension candidates. Maximal degree in co-relation 53808. Up to 6094 conditions per place. [2024-11-08 12:23:44,525 INFO L140 encePairwiseOnDemand]: 53/74 looper letters, 189 selfloop transitions, 52 changer transitions 92/363 dead transitions. [2024-11-08 12:23:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 363 transitions, 2584 flow [2024-11-08 12:23:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 12:23:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 12:23:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 697 transitions. [2024-11-08 12:23:44,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4957325746799431 [2024-11-08 12:23:44,528 INFO L175 Difference]: Start difference. First operand has 150 places, 164 transitions, 1045 flow. Second operand 19 states and 697 transitions. [2024-11-08 12:23:44,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 363 transitions, 2584 flow [2024-11-08 12:23:44,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 363 transitions, 2546 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-08 12:23:44,626 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 991 flow [2024-11-08 12:23:44,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=991, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-11-08 12:23:44,627 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 95 predicate places. [2024-11-08 12:23:44,627 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 991 flow [2024-11-08 12:23:44,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 28.526315789473685) internal successors, (542), 19 states have internal predecessors, (542), 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) [2024-11-08 12:23:44,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:44,628 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:44,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 12:23:44,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:44,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:44,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -438700543, now seen corresponding path program 1 times [2024-11-08 12:23:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380739860] [2024-11-08 12:23:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:23:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380739860] [2024-11-08 12:23:44,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380739860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880933815] [2024-11-08 12:23:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:44,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:44,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:44,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 12:23:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:45,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 12:23:45,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:23:45,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:23:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880933815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:45,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:45,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 12:23:45,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868962829] [2024-11-08 12:23:45,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:45,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 12:23:45,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 12:23:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 12:23:45,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-08 12:23:45,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 991 flow. Second operand has 12 states, 12 states have (on average 42.166666666666664) internal successors, (506), 12 states have internal predecessors, (506), 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) [2024-11-08 12:23:45,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:45,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-08 12:23:45,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:48,194 INFO L124 PetriNetUnfolderBase]: 11311/21469 cut-off events. [2024-11-08 12:23:48,194 INFO L125 PetriNetUnfolderBase]: For 27704/28162 co-relation queries the response was YES. [2024-11-08 12:23:48,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54944 conditions, 21469 events. 11311/21469 cut-off events. For 27704/28162 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 175828 event pairs, 2872 based on Foata normal form. 694/21531 useless extension candidates. Maximal degree in co-relation 54835. Up to 6055 conditions per place. [2024-11-08 12:23:48,775 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 314 selfloop transitions, 13 changer transitions 0/380 dead transitions. [2024-11-08 12:23:48,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 380 transitions, 3282 flow [2024-11-08 12:23:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 12:23:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 12:23:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 570 transitions. [2024-11-08 12:23:48,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2024-11-08 12:23:48,782 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 991 flow. Second operand 10 states and 570 transitions. [2024-11-08 12:23:48,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 380 transitions, 3282 flow [2024-11-08 12:23:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 380 transitions, 3036 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-11-08 12:23:48,867 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 994 flow [2024-11-08 12:23:48,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=994, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2024-11-08 12:23:48,867 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 87 predicate places. [2024-11-08 12:23:48,868 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 994 flow [2024-11-08 12:23:48,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 42.166666666666664) internal successors, (506), 12 states have internal predecessors, (506), 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) [2024-11-08 12:23:48,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:48,868 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:23:48,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 12:23:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:49,070 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:49,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 311721677, now seen corresponding path program 1 times [2024-11-08 12:23:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:49,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862153740] [2024-11-08 12:23:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:49,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 12:23:49,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862153740] [2024-11-08 12:23:49,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862153740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524217244] [2024-11-08 12:23:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:49,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:49,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 12:23:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:49,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 12:23:49,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 12:23:49,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-08 12:23:49,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524217244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:49,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:49,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 12:23:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924446646] [2024-11-08 12:23:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:49,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 12:23:49,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:49,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 12:23:49,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-08 12:23:50,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-08 12:23:50,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 994 flow. Second operand has 20 states, 20 states have (on average 33.65) internal successors, (673), 20 states have internal predecessors, (673), 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) [2024-11-08 12:23:50,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:50,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-08 12:23:50,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:23:52,814 INFO L124 PetriNetUnfolderBase]: 10861/21438 cut-off events. [2024-11-08 12:23:52,814 INFO L125 PetriNetUnfolderBase]: For 31756/32202 co-relation queries the response was YES. [2024-11-08 12:23:52,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55324 conditions, 21438 events. 10861/21438 cut-off events. For 31756/32202 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 180451 event pairs, 7754 based on Foata normal form. 33/20361 useless extension candidates. Maximal degree in co-relation 55248. Up to 13599 conditions per place. [2024-11-08 12:23:52,975 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 64 selfloop transitions, 35 changer transitions 11/149 dead transitions. [2024-11-08 12:23:52,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 149 transitions, 1170 flow [2024-11-08 12:23:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 12:23:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 12:23:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 440 transitions. [2024-11-08 12:23:52,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-11-08 12:23:52,977 INFO L175 Difference]: Start difference. First operand has 155 places, 152 transitions, 994 flow. Second operand 12 states and 440 transitions. [2024-11-08 12:23:52,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 149 transitions, 1170 flow [2024-11-08 12:23:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 149 transitions, 1146 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 12:23:53,194 INFO L231 Difference]: Finished difference. Result has 164 places, 136 transitions, 911 flow [2024-11-08 12:23:53,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=911, PETRI_PLACES=164, PETRI_TRANSITIONS=136} [2024-11-08 12:23:53,195 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 96 predicate places. [2024-11-08 12:23:53,195 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 136 transitions, 911 flow [2024-11-08 12:23:53,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 33.65) internal successors, (673), 20 states have internal predecessors, (673), 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) [2024-11-08 12:23:53,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:23:53,195 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 12:23:53,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 12:23:53,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:53,396 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:23:53,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:23:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1752307244, now seen corresponding path program 2 times [2024-11-08 12:23:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:23:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192423990] [2024-11-08 12:23:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:23:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:23:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:23:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:23:53,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:23:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192423990] [2024-11-08 12:23:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192423990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:23:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518377698] [2024-11-08 12:23:53,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 12:23:53,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:23:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:23:53,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:23:53,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 12:23:54,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 12:23:54,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 12:23:54,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 12:23:54,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:23:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 12:23:54,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:23:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 12:23:54,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518377698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:23:54,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:23:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4, 4] total 24 [2024-11-08 12:23:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826124828] [2024-11-08 12:23:54,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:23:54,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 12:23:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:23:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 12:23:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-08 12:23:55,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-08 12:23:55,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 136 transitions, 911 flow. Second operand has 25 states, 25 states have (on average 33.68) internal successors, (842), 25 states have internal predecessors, (842), 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) [2024-11-08 12:23:55,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:23:55,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-08 12:23:55,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 12:24:01,554 INFO L124 PetriNetUnfolderBase]: 22294/43674 cut-off events. [2024-11-08 12:24:01,554 INFO L125 PetriNetUnfolderBase]: For 58289/59203 co-relation queries the response was YES. [2024-11-08 12:24:01,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109996 conditions, 43674 events. 22294/43674 cut-off events. For 58289/59203 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 407813 event pairs, 15891 based on Foata normal form. 66/41163 useless extension candidates. Maximal degree in co-relation 109924. Up to 13907 conditions per place. [2024-11-08 12:24:01,932 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 103 selfloop transitions, 53 changer transitions 0/195 dead transitions. [2024-11-08 12:24:01,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 1595 flow [2024-11-08 12:24:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 12:24:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 12:24:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 728 transitions. [2024-11-08 12:24:01,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-11-08 12:24:01,935 INFO L175 Difference]: Start difference. First operand has 164 places, 136 transitions, 911 flow. Second operand 20 states and 728 transitions. [2024-11-08 12:24:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 1595 flow [2024-11-08 12:24:02,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 195 transitions, 1464 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-11-08 12:24:02,626 INFO L231 Difference]: Finished difference. Result has 158 places, 143 transitions, 960 flow [2024-11-08 12:24:02,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=960, PETRI_PLACES=158, PETRI_TRANSITIONS=143} [2024-11-08 12:24:02,629 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 90 predicate places. [2024-11-08 12:24:02,629 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 143 transitions, 960 flow [2024-11-08 12:24:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.68) internal successors, (842), 25 states have internal predecessors, (842), 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) [2024-11-08 12:24:02,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 12:24:02,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:24:02,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 12:24:02,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 12:24:02,840 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 12:24:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:24:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 621893727, now seen corresponding path program 1 times [2024-11-08 12:24:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:24:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837791353] [2024-11-08 12:24:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:24:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:24:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:24:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:24:02,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:24:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837791353] [2024-11-08 12:24:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837791353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 12:24:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322878363] [2024-11-08 12:24:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:24:02,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 12:24:02,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 12:24:02,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 12:24:02,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1451b350-69eb-49c4-a413-7d3858d80666/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 12:24:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:24:03,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 12:24:03,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:24:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:24:03,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 12:24:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 12:24:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322878363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 12:24:03,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 12:24:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 12:24:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925058912] [2024-11-08 12:24:03,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 12:24:03,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 12:24:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:24:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 12:24:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 12:24:03,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 74 [2024-11-08 12:24:03,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 143 transitions, 960 flow. Second operand has 12 states, 12 states have (on average 41.75) internal successors, (501), 12 states have internal predecessors, (501), 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) [2024-11-08 12:24:03,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 12:24:03,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 74 [2024-11-08 12:24:03,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand