./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya --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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:15:46,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:15:46,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:15:46,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:15:46,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:15:46,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:15:46,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:15:46,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:15:46,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:15:46,512 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:15:46,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:15:46,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:15:46,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:15:46,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:15:46,515 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:15:46,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:15:46,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:15:46,517 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:15:46,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:15:46,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:15:46,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:15:46,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:15:46,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:15:46,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:15:46,520 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:15:46,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:15:46,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:15:46,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:15:46,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:15:46,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:15:46,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:15:46,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:15:46,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:15:46,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:46,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:15:46,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:15:46,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:15:46,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:15:46,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:15:46,525 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_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2023-11-29 01:15:46,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:15:46,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:15:46,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:15:46,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:15:46,784 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:15:46,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-11-29 01:15:49,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:15:49,613 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:15:49,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2023-11-29 01:15:49,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/data/fd79a43b4/784992d4167243b6bb6d57a5af350a20/FLAG80aa6c66d [2023-11-29 01:15:49,632 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/data/fd79a43b4/784992d4167243b6bb6d57a5af350a20 [2023-11-29 01:15:49,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:15:49,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:15:49,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:49,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:15:49,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:15:49,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c71c411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49, skipping insertion in model container [2023-11-29 01:15:49,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:49,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:49,871 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:15:49,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:49,914 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:15:49,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49 WrapperNode [2023-11-29 01:15:49,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:49,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:49,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:15:49,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:15:49,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,965 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 367 [2023-11-29 01:15:49,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:49,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:15:49,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:15:49,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:15:49,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:49,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,006 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 2, 9]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2023-11-29 01:15:50,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:15:50,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:15:50,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:15:50,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:15:50,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (1/1) ... [2023-11-29 01:15:50,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:50,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:15:50,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:15:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:15:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:15:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:15:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:15:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:15:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:15:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:15:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:15:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:15:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:15:50,107 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:15:50,220 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:15:50,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:15:50,753 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:15:51,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:15:51,099 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 01:15:51,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:51 BoogieIcfgContainer [2023-11-29 01:15:51,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:15:51,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:15:51,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:15:51,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:15:51,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:15:49" (1/3) ... [2023-11-29 01:15:51,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad5111e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:51, skipping insertion in model container [2023-11-29 01:15:51,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:49" (2/3) ... [2023-11-29 01:15:51,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad5111e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:51, skipping insertion in model container [2023-11-29 01:15:51,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:51" (3/3) ... [2023-11-29 01:15:51,107 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2023-11-29 01:15:51,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:15:51,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:15:51,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-29 01:15:51,123 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:15:51,202 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:15:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 311 flow [2023-11-29 01:15:51,282 INFO L124 PetriNetUnfolderBase]: 16/142 cut-off events. [2023-11-29 01:15:51,282 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:15:51,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 16/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 471 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-29 01:15:51,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 311 flow [2023-11-29 01:15:51,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 141 transitions, 300 flow [2023-11-29 01:15:51,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:15:51,310 INFO L357 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, mHoare=true, 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;@7ee431ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:15:51,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-29 01:15:51,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:15:51,314 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:15:51,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:15:51,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:51,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:15:51,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:15:51,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1108872, now seen corresponding path program 1 times [2023-11-29 01:15:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339237265] [2023-11-29 01:15:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339237265] [2023-11-29 01:15:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339237265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:51,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:51,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571015648] [2023-11-29 01:15:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:51,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:51,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:15:51,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 141 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2023-11-29 01:15:51,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:51,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:15:51,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:53,311 INFO L124 PetriNetUnfolderBase]: 6335/13561 cut-off events. [2023-11-29 01:15:53,312 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2023-11-29 01:15:53,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22193 conditions, 13561 events. 6335/13561 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 127229 event pairs, 4157 based on Foata normal form. 3/10701 useless extension candidates. Maximal degree in co-relation 20174. Up to 8373 conditions per place. [2023-11-29 01:15:53,453 INFO L140 encePairwiseOnDemand]: 129/145 looper letters, 63 selfloop transitions, 10 changer transitions 0/150 dead transitions. [2023-11-29 01:15:53,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 150 transitions, 464 flow [2023-11-29 01:15:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:15:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2023-11-29 01:15:53,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879310344827586 [2023-11-29 01:15:53,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2023-11-29 01:15:53,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2023-11-29 01:15:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:53,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2023-11-29 01:15:53,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2023-11-29 01:15:53,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:15:53,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:15:53,487 INFO L175 Difference]: Start difference. First operand has 135 places, 141 transitions, 300 flow. Second operand 4 states and 399 transitions. [2023-11-29 01:15:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 150 transitions, 464 flow [2023-11-29 01:15:53,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 150 transitions, 452 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:15:53,507 INFO L231 Difference]: Finished difference. Result has 135 places, 150 transitions, 376 flow [2023-11-29 01:15:53,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=135, PETRI_TRANSITIONS=150} [2023-11-29 01:15:53,512 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2023-11-29 01:15:53,512 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 150 transitions, 376 flow [2023-11-29 01:15:53,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2023-11-29 01:15:53,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:53,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 01:15:53,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:15:53,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:15:53,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1324198758, now seen corresponding path program 1 times [2023-11-29 01:15:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628264576] [2023-11-29 01:15:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:53,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628264576] [2023-11-29 01:15:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628264576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:53,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137953337] [2023-11-29 01:15:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:53,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:53,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:53,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:15:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:53,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:53,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:53,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137953337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:53,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:15:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 01:15:53,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546587007] [2023-11-29 01:15:53,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:53,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:53,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:15:53,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:15:53,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 150 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2023-11-29 01:15:53,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:53,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:15:53,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:55,379 INFO L124 PetriNetUnfolderBase]: 6335/13558 cut-off events. [2023-11-29 01:15:55,379 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-29 01:15:55,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22043 conditions, 13558 events. 6335/13558 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 127259 event pairs, 4157 based on Foata normal form. 3/10703 useless extension candidates. Maximal degree in co-relation 21970. Up to 8358 conditions per place. [2023-11-29 01:15:55,485 INFO L140 encePairwiseOnDemand]: 132/145 looper letters, 53 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2023-11-29 01:15:55,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 147 transitions, 504 flow [2023-11-29 01:15:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:15:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 553 transitions. [2023-11-29 01:15:55,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635632183908046 [2023-11-29 01:15:55,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 553 transitions. [2023-11-29 01:15:55,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 553 transitions. [2023-11-29 01:15:55,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:55,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 553 transitions. [2023-11-29 01:15:55,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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) [2023-11-29 01:15:55,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:15:55,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:15:55,498 INFO L175 Difference]: Start difference. First operand has 135 places, 150 transitions, 376 flow. Second operand 6 states and 553 transitions. [2023-11-29 01:15:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 147 transitions, 504 flow [2023-11-29 01:15:55,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 147 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:15:55,504 INFO L231 Difference]: Finished difference. Result has 137 places, 147 transitions, 398 flow [2023-11-29 01:15:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=137, PETRI_TRANSITIONS=147} [2023-11-29 01:15:55,505 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 2 predicate places. [2023-11-29 01:15:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 147 transitions, 398 flow [2023-11-29 01:15:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2023-11-29 01:15:55,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:55,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:15:55,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:55,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:15:55,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1899512604, now seen corresponding path program 1 times [2023-11-29 01:15:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:55,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917174968] [2023-11-29 01:15:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:55,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917174968] [2023-11-29 01:15:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917174968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:15:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927625431] [2023-11-29 01:15:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:55,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:55,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:15:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:55,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:15:55,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:55,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:55,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927625431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:55,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:15:55,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:15:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032162881] [2023-11-29 01:15:55,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:55,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:15:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:15:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:15:56,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:15:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 147 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2023-11-29 01:15:56,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:56,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:15:56,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:57,637 INFO L124 PetriNetUnfolderBase]: 6344/13594 cut-off events. [2023-11-29 01:15:57,638 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-11-29 01:15:57,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22184 conditions, 13594 events. 6344/13594 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 127662 event pairs, 4157 based on Foata normal form. 9/10745 useless extension candidates. Maximal degree in co-relation 21972. Up to 8373 conditions per place. [2023-11-29 01:15:57,724 INFO L140 encePairwiseOnDemand]: 132/145 looper letters, 60 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2023-11-29 01:15:57,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 174 transitions, 766 flow [2023-11-29 01:15:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:15:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:15:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 906 transitions. [2023-11-29 01:15:57,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6248275862068966 [2023-11-29 01:15:57,729 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 906 transitions. [2023-11-29 01:15:57,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 906 transitions. [2023-11-29 01:15:57,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:57,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 906 transitions. [2023-11-29 01:15:57,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 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) [2023-11-29 01:15:57,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 145.0) internal successors, (1595), 11 states have internal predecessors, (1595), 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) [2023-11-29 01:15:57,738 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 145.0) internal successors, (1595), 11 states have internal predecessors, (1595), 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) [2023-11-29 01:15:57,738 INFO L175 Difference]: Start difference. First operand has 137 places, 147 transitions, 398 flow. Second operand 10 states and 906 transitions. [2023-11-29 01:15:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 174 transitions, 766 flow [2023-11-29 01:15:57,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 174 transitions, 683 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 01:15:57,745 INFO L231 Difference]: Finished difference. Result has 144 places, 174 transitions, 613 flow [2023-11-29 01:15:57,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=613, PETRI_PLACES=144, PETRI_TRANSITIONS=174} [2023-11-29 01:15:57,746 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 9 predicate places. [2023-11-29 01:15:57,746 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 174 transitions, 613 flow [2023-11-29 01:15:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2023-11-29 01:15:57,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:57,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:57,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:15:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:57,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:15:57,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 350674505, now seen corresponding path program 1 times [2023-11-29 01:15:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809047341] [2023-11-29 01:15:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809047341] [2023-11-29 01:15:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809047341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431862425] [2023-11-29 01:15:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:58,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:15:58,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 174 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-11-29 01:15:58,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:58,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:15:58,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:59,937 INFO L124 PetriNetUnfolderBase]: 12428/22436 cut-off events. [2023-11-29 01:15:59,938 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-11-29 01:15:59,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39186 conditions, 22436 events. 12428/22436 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 195379 event pairs, 4115 based on Foata normal form. 544/18814 useless extension candidates. Maximal degree in co-relation 39088. Up to 7778 conditions per place. [2023-11-29 01:16:00,118 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 154 selfloop transitions, 5 changer transitions 0/233 dead transitions. [2023-11-29 01:16:00,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 233 transitions, 1053 flow [2023-11-29 01:16:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:16:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:16:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2023-11-29 01:16:00,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7689655172413793 [2023-11-29 01:16:00,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2023-11-29 01:16:00,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2023-11-29 01:16:00,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:00,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2023-11-29 01:16:00,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 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) [2023-11-29 01:16:00,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:00,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:00,125 INFO L175 Difference]: Start difference. First operand has 144 places, 174 transitions, 613 flow. Second operand 4 states and 446 transitions. [2023-11-29 01:16:00,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 233 transitions, 1053 flow [2023-11-29 01:16:00,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 233 transitions, 1016 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 01:16:00,132 INFO L231 Difference]: Finished difference. Result has 147 places, 176 transitions, 610 flow [2023-11-29 01:16:00,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=147, PETRI_TRANSITIONS=176} [2023-11-29 01:16:00,133 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 12 predicate places. [2023-11-29 01:16:00,133 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 176 transitions, 610 flow [2023-11-29 01:16:00,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-11-29 01:16:00,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:00,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:00,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:16:00,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:00,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2013990999, now seen corresponding path program 1 times [2023-11-29 01:16:00,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:00,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558817314] [2023-11-29 01:16:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:00,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558817314] [2023-11-29 01:16:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558817314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:00,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:16:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688158714] [2023-11-29 01:16:00,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:00,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:16:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:16:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:16:00,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 145 [2023-11-29 01:16:00,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 610 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2023-11-29 01:16:00,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 145 [2023-11-29 01:16:00,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:02,486 INFO L124 PetriNetUnfolderBase]: 9986/21158 cut-off events. [2023-11-29 01:16:02,486 INFO L125 PetriNetUnfolderBase]: For 3042/3422 co-relation queries the response was YES. [2023-11-29 01:16:02,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36692 conditions, 21158 events. 9986/21158 cut-off events. For 3042/3422 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 204174 event pairs, 6172 based on Foata normal form. 463/17772 useless extension candidates. Maximal degree in co-relation 36539. Up to 9999 conditions per place. [2023-11-29 01:16:02,598 INFO L140 encePairwiseOnDemand]: 135/145 looper letters, 171 selfloop transitions, 24 changer transitions 0/275 dead transitions. [2023-11-29 01:16:02,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 1335 flow [2023-11-29 01:16:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:16:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:16:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 665 transitions. [2023-11-29 01:16:02,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2023-11-29 01:16:02,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 665 transitions. [2023-11-29 01:16:02,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 665 transitions. [2023-11-29 01:16:02,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:02,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 665 transitions. [2023-11-29 01:16:02,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2023-11-29 01:16:02,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:02,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:02,607 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 610 flow. Second operand 6 states and 665 transitions. [2023-11-29 01:16:02,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 1335 flow [2023-11-29 01:16:02,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 275 transitions, 1335 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:16:02,632 INFO L231 Difference]: Finished difference. Result has 155 places, 186 transitions, 744 flow [2023-11-29 01:16:02,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=155, PETRI_TRANSITIONS=186} [2023-11-29 01:16:02,634 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 20 predicate places. [2023-11-29 01:16:02,634 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 186 transitions, 744 flow [2023-11-29 01:16:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2023-11-29 01:16:02,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:02,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:02,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:16:02,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:02,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash 19716819, now seen corresponding path program 1 times [2023-11-29 01:16:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537673168] [2023-11-29 01:16:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537673168] [2023-11-29 01:16:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537673168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:16:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131815396] [2023-11-29 01:16:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:16:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:16:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:16:02,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:16:02,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 186 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-11-29 01:16:02,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:02,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:16:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:06,014 INFO L124 PetriNetUnfolderBase]: 21283/38533 cut-off events. [2023-11-29 01:16:06,014 INFO L125 PetriNetUnfolderBase]: For 10354/10714 co-relation queries the response was YES. [2023-11-29 01:16:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76106 conditions, 38533 events. 21283/38533 cut-off events. For 10354/10714 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 353580 event pairs, 7211 based on Foata normal form. 1162/34148 useless extension candidates. Maximal degree in co-relation 75945. Up to 13684 conditions per place. [2023-11-29 01:16:06,271 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 174 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2023-11-29 01:16:06,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 253 transitions, 1304 flow [2023-11-29 01:16:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:16:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:16:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2023-11-29 01:16:06,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7689655172413793 [2023-11-29 01:16:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2023-11-29 01:16:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2023-11-29 01:16:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:06,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2023-11-29 01:16:06,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 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) [2023-11-29 01:16:06,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:06,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:06,276 INFO L175 Difference]: Start difference. First operand has 155 places, 186 transitions, 744 flow. Second operand 4 states and 446 transitions. [2023-11-29 01:16:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 253 transitions, 1304 flow [2023-11-29 01:16:06,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 253 transitions, 1300 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 01:16:06,403 INFO L231 Difference]: Finished difference. Result has 160 places, 188 transitions, 774 flow [2023-11-29 01:16:06,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=774, PETRI_PLACES=160, PETRI_TRANSITIONS=188} [2023-11-29 01:16:06,404 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 25 predicate places. [2023-11-29 01:16:06,404 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 188 transitions, 774 flow [2023-11-29 01:16:06,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2023-11-29 01:16:06,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:06,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:16:06,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:06,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash 611222648, now seen corresponding path program 1 times [2023-11-29 01:16:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623906639] [2023-11-29 01:16:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:06,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:06,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623906639] [2023-11-29 01:16:06,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623906639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:06,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:06,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:16:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565159266] [2023-11-29 01:16:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:06,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:16:06,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:16:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:16:06,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 145 [2023-11-29 01:16:06,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 188 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2023-11-29 01:16:06,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:06,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 145 [2023-11-29 01:16:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:08,971 INFO L124 PetriNetUnfolderBase]: 10343/22803 cut-off events. [2023-11-29 01:16:08,971 INFO L125 PetriNetUnfolderBase]: For 8762/9685 co-relation queries the response was YES. [2023-11-29 01:16:09,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43463 conditions, 22803 events. 10343/22803 cut-off events. For 8762/9685 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 232660 event pairs, 6905 based on Foata normal form. 573/19561 useless extension candidates. Maximal degree in co-relation 43299. Up to 12863 conditions per place. [2023-11-29 01:16:09,322 INFO L140 encePairwiseOnDemand]: 135/145 looper letters, 159 selfloop transitions, 24 changer transitions 0/263 dead transitions. [2023-11-29 01:16:09,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 263 transitions, 1404 flow [2023-11-29 01:16:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:16:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:16:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-11-29 01:16:09,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7482758620689656 [2023-11-29 01:16:09,325 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-11-29 01:16:09,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-11-29 01:16:09,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:09,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-11-29 01:16:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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) [2023-11-29 01:16:09,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:09,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:09,329 INFO L175 Difference]: Start difference. First operand has 160 places, 188 transitions, 774 flow. Second operand 6 states and 651 transitions. [2023-11-29 01:16:09,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 263 transitions, 1404 flow [2023-11-29 01:16:09,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 263 transitions, 1404 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:16:09,353 INFO L231 Difference]: Finished difference. Result has 167 places, 190 transitions, 844 flow [2023-11-29 01:16:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=844, PETRI_PLACES=167, PETRI_TRANSITIONS=190} [2023-11-29 01:16:09,354 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 32 predicate places. [2023-11-29 01:16:09,354 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 190 transitions, 844 flow [2023-11-29 01:16:09,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2023-11-29 01:16:09,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:09,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:16:09,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1174582815, now seen corresponding path program 1 times [2023-11-29 01:16:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595242067] [2023-11-29 01:16:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595242067] [2023-11-29 01:16:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595242067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:09,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:16:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865525412] [2023-11-29 01:16:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:09,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:16:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:16:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:16:09,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 145 [2023-11-29 01:16:09,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 190 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-11-29 01:16:09,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:09,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 145 [2023-11-29 01:16:09,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:13,525 INFO L124 PetriNetUnfolderBase]: 23846/43824 cut-off events. [2023-11-29 01:16:13,526 INFO L125 PetriNetUnfolderBase]: For 24132/25932 co-relation queries the response was YES. [2023-11-29 01:16:13,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95165 conditions, 43824 events. 23846/43824 cut-off events. For 24132/25932 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 419058 event pairs, 7468 based on Foata normal form. 2142/40387 useless extension candidates. Maximal degree in co-relation 94994. Up to 13691 conditions per place. [2023-11-29 01:16:13,870 INFO L140 encePairwiseOnDemand]: 130/145 looper letters, 180 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2023-11-29 01:16:13,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 258 transitions, 1492 flow [2023-11-29 01:16:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:16:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:16:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2023-11-29 01:16:13,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7310344827586207 [2023-11-29 01:16:13,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2023-11-29 01:16:13,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2023-11-29 01:16:13,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:13,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2023-11-29 01:16:13,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2023-11-29 01:16:13,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:13,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:13,877 INFO L175 Difference]: Start difference. First operand has 167 places, 190 transitions, 844 flow. Second operand 4 states and 424 transitions. [2023-11-29 01:16:13,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 258 transitions, 1492 flow [2023-11-29 01:16:14,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 258 transitions, 1456 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:16:14,104 INFO L231 Difference]: Finished difference. Result has 168 places, 194 transitions, 874 flow [2023-11-29 01:16:14,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=874, PETRI_PLACES=168, PETRI_TRANSITIONS=194} [2023-11-29 01:16:14,105 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2023-11-29 01:16:14,105 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 194 transitions, 874 flow [2023-11-29 01:16:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-11-29 01:16:14,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:14,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:14,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:16:14,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:14,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2052327613, now seen corresponding path program 1 times [2023-11-29 01:16:14,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:14,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053594993] [2023-11-29 01:16:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:14,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053594993] [2023-11-29 01:16:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053594993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:14,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:16:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788390773] [2023-11-29 01:16:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:16:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:16:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:16:14,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 145 [2023-11-29 01:16:14,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 194 transitions, 874 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-11-29 01:16:14,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:14,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 145 [2023-11-29 01:16:14,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:17,546 INFO L124 PetriNetUnfolderBase]: 14389/30771 cut-off events. [2023-11-29 01:16:17,546 INFO L125 PetriNetUnfolderBase]: For 20152/21762 co-relation queries the response was YES. [2023-11-29 01:16:17,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67240 conditions, 30771 events. 14389/30771 cut-off events. For 20152/21762 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 326260 event pairs, 10141 based on Foata normal form. 874/28207 useless extension candidates. Maximal degree in co-relation 67070. Up to 18463 conditions per place. [2023-11-29 01:16:17,781 INFO L140 encePairwiseOnDemand]: 135/145 looper letters, 139 selfloop transitions, 24 changer transitions 0/243 dead transitions. [2023-11-29 01:16:17,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 243 transitions, 1420 flow [2023-11-29 01:16:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:16:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:16:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 627 transitions. [2023-11-29 01:16:17,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7206896551724138 [2023-11-29 01:16:17,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 627 transitions. [2023-11-29 01:16:17,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 627 transitions. [2023-11-29 01:16:17,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:17,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 627 transitions. [2023-11-29 01:16:17,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 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) [2023-11-29 01:16:17,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:17,788 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:16:17,788 INFO L175 Difference]: Start difference. First operand has 168 places, 194 transitions, 874 flow. Second operand 6 states and 627 transitions. [2023-11-29 01:16:17,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 243 transitions, 1420 flow [2023-11-29 01:16:18,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 243 transitions, 1420 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:16:18,064 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 944 flow [2023-11-29 01:16:18,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=944, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2023-11-29 01:16:18,065 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 40 predicate places. [2023-11-29 01:16:18,065 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 944 flow [2023-11-29 01:16:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-11-29 01:16:18,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:18,065 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 01:16:18,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:16:18,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:18,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash -258134930, now seen corresponding path program 2 times [2023-11-29 01:16:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370481812] [2023-11-29 01:16:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:18,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:18,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370481812] [2023-11-29 01:16:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370481812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:18,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86499082] [2023-11-29 01:16:18,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:16:18,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:18,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:18,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:18,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:16:18,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:16:18,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:18,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:16:18,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:16:18,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:16:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86499082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:18,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 01:16:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431321363] [2023-11-29 01:16:18,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:18,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:16:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:16:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:16:18,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 145 [2023-11-29 01:16:18,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 944 flow. Second operand has 14 states, 14 states have (on average 81.14285714285714) internal successors, (1136), 14 states have internal predecessors, (1136), 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) [2023-11-29 01:16:18,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:18,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 145 [2023-11-29 01:16:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:22,245 INFO L124 PetriNetUnfolderBase]: 14474/32062 cut-off events. [2023-11-29 01:16:22,245 INFO L125 PetriNetUnfolderBase]: For 21324/22914 co-relation queries the response was YES. [2023-11-29 01:16:22,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69818 conditions, 32062 events. 14474/32062 cut-off events. For 21324/22914 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 350860 event pairs, 10241 based on Foata normal form. 844/29006 useless extension candidates. Maximal degree in co-relation 69565. Up to 18820 conditions per place. [2023-11-29 01:16:22,509 INFO L140 encePairwiseOnDemand]: 132/145 looper letters, 71 selfloop transitions, 57 changer transitions 0/205 dead transitions. [2023-11-29 01:16:22,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 205 transitions, 1273 flow [2023-11-29 01:16:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:16:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 01:16:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2029 transitions. [2023-11-29 01:16:22,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830459770114943 [2023-11-29 01:16:22,514 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2029 transitions. [2023-11-29 01:16:22,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2029 transitions. [2023-11-29 01:16:22,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:22,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2029 transitions. [2023-11-29 01:16:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 84.54166666666667) internal successors, (2029), 24 states have internal predecessors, (2029), 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) [2023-11-29 01:16:22,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-29 01:16:22,524 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-29 01:16:22,524 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 944 flow. Second operand 24 states and 2029 transitions. [2023-11-29 01:16:22,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 205 transitions, 1273 flow [2023-11-29 01:16:22,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 205 transitions, 1232 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:16:22,776 INFO L231 Difference]: Finished difference. Result has 196 places, 205 transitions, 1115 flow [2023-11-29 01:16:22,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1115, PETRI_PLACES=196, PETRI_TRANSITIONS=205} [2023-11-29 01:16:22,777 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 61 predicate places. [2023-11-29 01:16:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 205 transitions, 1115 flow [2023-11-29 01:16:22,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.14285714285714) internal successors, (1136), 14 states have internal predecessors, (1136), 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) [2023-11-29 01:16:22,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:22,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:22,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:16:22,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:16:22,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 680956115, now seen corresponding path program 1 times [2023-11-29 01:16:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606372420] [2023-11-29 01:16:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606372420] [2023-11-29 01:16:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606372420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889719052] [2023-11-29 01:16:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:23,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:23,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:23,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:16:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:23,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:16:23,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:23,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-29 01:16:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:23,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:23,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:23,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:16:23,985 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:16:23,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:16:24,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 01:16:24,030 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:16:24,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:16:24,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 01:16:24,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:16:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:24,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:24,158 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_238 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_238) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-11-29 01:16:24,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:16:24,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 01:16:24,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:16:24,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-29 01:16:24,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:16:24,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-29 01:16:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 01:16:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889719052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:24,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 01:16:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301841305] [2023-11-29 01:16:24,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:24,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:16:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:16:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=253, Unknown=2, NotChecked=32, Total=342 [2023-11-29 01:16:24,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-11-29 01:16:24,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 1115 flow. Second operand has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 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) [2023-11-29 01:16:24,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:24,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-11-29 01:16:24,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:36,168 INFO L124 PetriNetUnfolderBase]: 59988/93077 cut-off events. [2023-11-29 01:16:36,168 INFO L125 PetriNetUnfolderBase]: For 72648/80011 co-relation queries the response was YES. [2023-11-29 01:16:36,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233829 conditions, 93077 events. 59988/93077 cut-off events. For 72648/80011 co-relation queries the response was YES. Maximal size of possible extension queue 2822. Compared 784943 event pairs, 13121 based on Foata normal form. 3771/90187 useless extension candidates. Maximal degree in co-relation 233615. Up to 28504 conditions per place. [2023-11-29 01:16:37,090 INFO L140 encePairwiseOnDemand]: 126/145 looper letters, 301 selfloop transitions, 53 changer transitions 0/424 dead transitions. [2023-11-29 01:16:37,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 424 transitions, 2813 flow [2023-11-29 01:16:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:16:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:16:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1251 transitions. [2023-11-29 01:16:37,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6636604774535809 [2023-11-29 01:16:37,095 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1251 transitions. [2023-11-29 01:16:37,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1251 transitions. [2023-11-29 01:16:37,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:37,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1251 transitions. [2023-11-29 01:16:37,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 96.23076923076923) internal successors, (1251), 13 states have internal predecessors, (1251), 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) [2023-11-29 01:16:37,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:16:37,105 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:16:37,105 INFO L175 Difference]: Start difference. First operand has 196 places, 205 transitions, 1115 flow. Second operand 13 states and 1251 transitions. [2023-11-29 01:16:37,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 424 transitions, 2813 flow [2023-11-29 01:16:37,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 424 transitions, 2643 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-11-29 01:16:37,650 INFO L231 Difference]: Finished difference. Result has 202 places, 225 transitions, 1263 flow [2023-11-29 01:16:37,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1263, PETRI_PLACES=202, PETRI_TRANSITIONS=225} [2023-11-29 01:16:37,650 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 67 predicate places. [2023-11-29 01:16:37,650 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 225 transitions, 1263 flow [2023-11-29 01:16:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 78.6842105263158) internal successors, (1495), 19 states have internal predecessors, (1495), 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) [2023-11-29 01:16:37,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:37,651 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 01:16:37,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:16:37,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:16:37,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:37,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1562218712, now seen corresponding path program 1 times [2023-11-29 01:16:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332208307] [2023-11-29 01:16:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 01:16:37,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332208307] [2023-11-29 01:16:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332208307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:37,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:37,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:16:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192679752] [2023-11-29 01:16:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:37,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:16:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:16:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:16:37,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 145 [2023-11-29 01:16:37,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 225 transitions, 1263 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-11-29 01:16:37,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:37,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 145 [2023-11-29 01:16:37,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:16:45,048 INFO L124 PetriNetUnfolderBase]: 27754/60313 cut-off events. [2023-11-29 01:16:45,048 INFO L125 PetriNetUnfolderBase]: For 65847/69543 co-relation queries the response was YES. [2023-11-29 01:16:45,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142884 conditions, 60313 events. 27754/60313 cut-off events. For 65847/69543 co-relation queries the response was YES. Maximal size of possible extension queue 2210. Compared 689099 event pairs, 20000 based on Foata normal form. 1745/55269 useless extension candidates. Maximal degree in co-relation 142784. Up to 36352 conditions per place. [2023-11-29 01:16:45,765 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 111 selfloop transitions, 19 changer transitions 0/210 dead transitions. [2023-11-29 01:16:45,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 210 transitions, 1342 flow [2023-11-29 01:16:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:16:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:16:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2023-11-29 01:16:45,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7155172413793104 [2023-11-29 01:16:45,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2023-11-29 01:16:45,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2023-11-29 01:16:45,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:16:45,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2023-11-29 01:16:45,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2023-11-29 01:16:45,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:45,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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) [2023-11-29 01:16:45,769 INFO L175 Difference]: Start difference. First operand has 202 places, 225 transitions, 1263 flow. Second operand 4 states and 415 transitions. [2023-11-29 01:16:45,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 210 transitions, 1342 flow [2023-11-29 01:16:46,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 210 transitions, 1296 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-29 01:16:46,220 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 1080 flow [2023-11-29 01:16:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1080, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2023-11-29 01:16:46,221 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 65 predicate places. [2023-11-29 01:16:46,221 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 1080 flow [2023-11-29 01:16:46,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-11-29 01:16:46,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:16:46,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:46,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:16:46,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:16:46,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash -365227453, now seen corresponding path program 1 times [2023-11-29 01:16:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:16:46,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599536384] [2023-11-29 01:16:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:16:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:46,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:16:46,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599536384] [2023-11-29 01:16:46,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599536384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764089860] [2023-11-29 01:16:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:46,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:16:46,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:16:46,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:16:46,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:16:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:46,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:16:46,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:46,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 01:16:46,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:46,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:46,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 01:16:46,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:46,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:46,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 01:16:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:46,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 01:16:46,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:16:47,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:16:47,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:16:47,050 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:16:47,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:16:47,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 01:16:47,090 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:16:47,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:16:47,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 01:16:47,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:16:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:47,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:47,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:16:47,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-29 01:16:47,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:16:47,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-11-29 01:16:47,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-29 01:16:47,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 01:16:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764089860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:47,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:16:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-29 01:16:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098727107] [2023-11-29 01:16:47,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:16:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:16:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:16:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=312, Unknown=3, NotChecked=0, Total=380 [2023-11-29 01:16:51,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:16:55,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:16:55,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-11-29 01:16:55,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 210 transitions, 1080 flow. Second operand has 20 states, 20 states have (on average 78.75) internal successors, (1575), 20 states have internal predecessors, (1575), 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) [2023-11-29 01:16:55,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:16:55,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-11-29 01:16:55,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:17:07,344 INFO L124 PetriNetUnfolderBase]: 59486/98600 cut-off events. [2023-11-29 01:17:07,344 INFO L125 PetriNetUnfolderBase]: For 89470/97002 co-relation queries the response was YES. [2023-11-29 01:17:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249171 conditions, 98600 events. 59486/98600 cut-off events. For 89470/97002 co-relation queries the response was YES. Maximal size of possible extension queue 3314. Compared 918273 event pairs, 20973 based on Foata normal form. 4406/94929 useless extension candidates. Maximal degree in co-relation 249071. Up to 31508 conditions per place. [2023-11-29 01:17:08,490 INFO L140 encePairwiseOnDemand]: 126/145 looper letters, 275 selfloop transitions, 38 changer transitions 0/383 dead transitions. [2023-11-29 01:17:08,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 383 transitions, 2362 flow [2023-11-29 01:17:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:17:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:17:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1232 transitions. [2023-11-29 01:17:08,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6535809018567639 [2023-11-29 01:17:08,494 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1232 transitions. [2023-11-29 01:17:08,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1232 transitions. [2023-11-29 01:17:08,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:17:08,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1232 transitions. [2023-11-29 01:17:08,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.76923076923077) internal successors, (1232), 13 states have internal predecessors, (1232), 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) [2023-11-29 01:17:08,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:17:08,500 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:17:08,500 INFO L175 Difference]: Start difference. First operand has 200 places, 210 transitions, 1080 flow. Second operand 13 states and 1232 transitions. [2023-11-29 01:17:08,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 383 transitions, 2362 flow [2023-11-29 01:17:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 383 transitions, 2324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:17:09,076 INFO L231 Difference]: Finished difference. Result has 211 places, 212 transitions, 1149 flow [2023-11-29 01:17:09,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1149, PETRI_PLACES=211, PETRI_TRANSITIONS=212} [2023-11-29 01:17:09,076 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 76 predicate places. [2023-11-29 01:17:09,076 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 212 transitions, 1149 flow [2023-11-29 01:17:09,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.75) internal successors, (1575), 20 states have internal predecessors, (1575), 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) [2023-11-29 01:17:09,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:17:09,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:17:09,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:17:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:09,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:17:09,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 590119714, now seen corresponding path program 1 times [2023-11-29 01:17:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171019492] [2023-11-29 01:17:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:17:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:17:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171019492] [2023-11-29 01:17:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171019492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:17:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416457060] [2023-11-29 01:17:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:17:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:17:09,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:17:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:17:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:17:09,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:17:09,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:09,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:17:09,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:17:09,760 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:17:09,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:17:09,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 01:17:09,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:17:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:17:09,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:09,889 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_356) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-11-29 01:17:09,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:17:09,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 01:17:09,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:17:09,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 01:17:09,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-29 01:17:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-29 01:17:10,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416457060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:17:10,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:17:10,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 01:17:10,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573056696] [2023-11-29 01:17:10,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:10,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:17:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:17:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-11-29 01:17:10,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-11-29 01:17:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 212 transitions, 1149 flow. Second operand has 14 states, 14 states have (on average 79.28571428571429) internal successors, (1110), 14 states have internal predecessors, (1110), 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) [2023-11-29 01:17:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:17:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-11-29 01:17:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:17:33,602 INFO L124 PetriNetUnfolderBase]: 118583/180864 cut-off events. [2023-11-29 01:17:33,602 INFO L125 PetriNetUnfolderBase]: For 323413/339511 co-relation queries the response was YES. [2023-11-29 01:17:34,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515307 conditions, 180864 events. 118583/180864 cut-off events. For 323413/339511 co-relation queries the response was YES. Maximal size of possible extension queue 4526. Compared 1580934 event pairs, 26649 based on Foata normal form. 9126/177746 useless extension candidates. Maximal degree in co-relation 515204. Up to 57088 conditions per place. [2023-11-29 01:17:35,668 INFO L140 encePairwiseOnDemand]: 126/145 looper letters, 323 selfloop transitions, 38 changer transitions 0/434 dead transitions. [2023-11-29 01:17:35,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 434 transitions, 3017 flow [2023-11-29 01:17:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:17:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:17:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1240 transitions. [2023-11-29 01:17:35,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578249336870027 [2023-11-29 01:17:35,672 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1240 transitions. [2023-11-29 01:17:35,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1240 transitions. [2023-11-29 01:17:35,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:17:35,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1240 transitions. [2023-11-29 01:17:35,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.38461538461539) internal successors, (1240), 13 states have internal predecessors, (1240), 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) [2023-11-29 01:17:35,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:17:35,678 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-29 01:17:35,678 INFO L175 Difference]: Start difference. First operand has 211 places, 212 transitions, 1149 flow. Second operand 13 states and 1240 transitions. [2023-11-29 01:17:35,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 434 transitions, 3017 flow [2023-11-29 01:17:37,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 434 transitions, 2906 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-11-29 01:17:37,609 INFO L231 Difference]: Finished difference. Result has 216 places, 223 transitions, 1263 flow [2023-11-29 01:17:37,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1263, PETRI_PLACES=216, PETRI_TRANSITIONS=223} [2023-11-29 01:17:37,610 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 81 predicate places. [2023-11-29 01:17:37,610 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 223 transitions, 1263 flow [2023-11-29 01:17:37,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.28571428571429) internal successors, (1110), 14 states have internal predecessors, (1110), 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) [2023-11-29 01:17:37,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:17:37,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:17:37,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:17:37,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:17:37,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:17:37,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:17:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1562851061, now seen corresponding path program 1 times [2023-11-29 01:17:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:17:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116358074] [2023-11-29 01:17:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:17:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:17:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:17:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:17:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:17:37,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116358074] [2023-11-29 01:17:37,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116358074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:17:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:17:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:17:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463060445] [2023-11-29 01:17:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:17:37,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:17:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:17:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:17:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:17:37,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 145 [2023-11-29 01:17:37,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 223 transitions, 1263 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2023-11-29 01:17:37,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:17:37,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 145 [2023-11-29 01:17:37,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:17:56,604 INFO L124 PetriNetUnfolderBase]: 84108/149804 cut-off events. [2023-11-29 01:17:56,605 INFO L125 PetriNetUnfolderBase]: For 255703/269705 co-relation queries the response was YES. [2023-11-29 01:17:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419455 conditions, 149804 events. 84108/149804 cut-off events. For 255703/269705 co-relation queries the response was YES. Maximal size of possible extension queue 4106. Compared 1573065 event pairs, 15751 based on Foata normal form. 7484/148327 useless extension candidates. Maximal degree in co-relation 419349. Up to 62315 conditions per place. [2023-11-29 01:17:58,583 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 324 selfloop transitions, 8 changer transitions 0/407 dead transitions. [2023-11-29 01:17:58,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 407 transitions, 2830 flow [2023-11-29 01:17:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:17:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:17:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 687 transitions. [2023-11-29 01:17:58,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7896551724137931 [2023-11-29 01:17:58,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 687 transitions. [2023-11-29 01:17:58,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 687 transitions. [2023-11-29 01:17:58,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:17:58,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 687 transitions. [2023-11-29 01:17:58,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-11-29 01:17:58,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:17:58,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-29 01:17:58,591 INFO L175 Difference]: Start difference. First operand has 216 places, 223 transitions, 1263 flow. Second operand 6 states and 687 transitions. [2023-11-29 01:17:58,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 407 transitions, 2830 flow [2023-11-29 01:18:01,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 407 transitions, 2815 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:18:01,559 INFO L231 Difference]: Finished difference. Result has 223 places, 224 transitions, 1288 flow [2023-11-29 01:18:01,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1288, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2023-11-29 01:18:01,559 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 88 predicate places. [2023-11-29 01:18:01,560 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 1288 flow [2023-11-29 01:18:01,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2023-11-29 01:18:01,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:18:01,560 INFO L208 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] [2023-11-29 01:18:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:18:01,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 01:18:01,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1113811437, now seen corresponding path program 1 times [2023-11-29 01:18:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445580696] [2023-11-29 01:18:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:18:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445580696] [2023-11-29 01:18:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445580696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645560308] [2023-11-29 01:18:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:01,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:01,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:01,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fafa326a-e9ce-4341-8963-919d7dcb42d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:18:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:02,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:18:02,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:02,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:18:02,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:18:02,102 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 01:18:02,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 01:18:02,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 01:18:02,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:18:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:18:02,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:02,218 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_424 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_424) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-11-29 01:18:02,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:18:02,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 01:18:02,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:18:02,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 01:18:02,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-29 01:18:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-29 01:18:02,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645560308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:18:02,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:18:02,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 01:18:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113807475] [2023-11-29 01:18:02,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:18:02,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:18:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:18:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-11-29 01:18:02,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-11-29 01:18:02,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 1288 flow. Second operand has 14 states, 14 states have (on average 79.28571428571429) internal successors, (1110), 14 states have internal predecessors, (1110), 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) [2023-11-29 01:18:02,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:18:02,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-11-29 01:18:02,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand