./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:04:36,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:04:36,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:04:36,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:04:36,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:04:36,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:04:36,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:04:36,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:04:36,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:04:36,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:04:36,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:04:36,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:04:36,385 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:04:36,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:04:36,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:04:36,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:04:36,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:04:36,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:04:36,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:04:36,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:04:36,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:04:36,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:04:36,391 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:04:36,392 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:04:36,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:04:36,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:04:36,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:04:36,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:04:36,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:04:36,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:04:36,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:36,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:04:36,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:04:36,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:04:36,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:04:36,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:04:36,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:04:36,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:04:36,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:04:36,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:04:36,401 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:04:36,402 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_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2023-11-06 23:04:36,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:04:36,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:04:36,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:04:36,728 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:04:36,729 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:04:36,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2023-11-06 23:04:39,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:04:40,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:04:40,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2023-11-06 23:04:40,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/data/113e98247/9917cf4a4d464f25bfc690a5a0660881/FLAGd126f6e56 [2023-11-06 23:04:40,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/data/113e98247/9917cf4a4d464f25bfc690a5a0660881 [2023-11-06 23:04:40,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:04:40,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:04:40,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:40,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:04:40,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:04:40,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147cb34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40, skipping insertion in model container [2023-11-06 23:04:40,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:04:40,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:40,404 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:04:40,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:40,455 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:04:40,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40 WrapperNode [2023-11-06 23:04:40,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:40,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:40,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:04:40,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:04:40,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,513 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 335 [2023-11-06 23:04:40,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:40,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:04:40,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:04:40,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:04:40,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:04:40,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:04:40,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:04:40,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:04:40,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (1/1) ... [2023-11-06 23:04:40,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:40,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:04:40,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:04:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:04:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:04:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:04:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:04:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:04:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:04:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:04:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:04:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:04:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:04:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:04:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:04:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:04:40,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:04:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:04:40,737 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:04:40,895 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:04:40,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:04:41,580 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:04:41,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:04:41,613 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 23:04:41,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:41 BoogieIcfgContainer [2023-11-06 23:04:41,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:04:41,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:04:41,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:04:41,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:04:41,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:04:40" (1/3) ... [2023-11-06 23:04:41,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a447b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:41, skipping insertion in model container [2023-11-06 23:04:41,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:40" (2/3) ... [2023-11-06 23:04:41,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a447b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:41, skipping insertion in model container [2023-11-06 23:04:41,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:41" (3/3) ... [2023-11-06 23:04:41,633 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2023-11-06 23:04:41,647 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:04:41,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:04:41,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 23:04:41,661 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:04:41,886 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:04:41,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 453 transitions, 927 flow [2023-11-06 23:04:42,188 INFO L124 PetriNetUnfolderBase]: 34/450 cut-off events. [2023-11-06 23:04:42,188 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:04:42,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 450 events. 34/450 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 951 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-11-06 23:04:42,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 453 transitions, 927 flow [2023-11-06 23:04:42,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 426 transitions, 867 flow [2023-11-06 23:04:42,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:04:42,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 403 places, 426 transitions, 867 flow [2023-11-06 23:04:42,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 403 places, 426 transitions, 867 flow [2023-11-06 23:04:42,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 426 transitions, 867 flow [2023-11-06 23:04:42,357 INFO L124 PetriNetUnfolderBase]: 33/426 cut-off events. [2023-11-06 23:04:42,358 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:04:42,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 426 events. 33/426 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 901 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-11-06 23:04:42,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 43134 [2023-11-06 23:05:09,181 INFO L134 LiptonReduction]: Checked pairs total: 47298 [2023-11-06 23:05:09,182 INFO L136 LiptonReduction]: Total number of compositions: 558 [2023-11-06 23:05:09,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:09,206 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=LoopsAndPotentialCycles, 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;@3498296b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:09,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-06 23:05:09,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:05:09,210 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:05:09,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:05:09,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:09,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:05:09,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:09,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 59636, now seen corresponding path program 1 times [2023-11-06 23:05:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647763753] [2023-11-06 23:05:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647763753] [2023-11-06 23:05:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647763753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:09,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047664467] [2023-11-06 23:05:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:09,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:09,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:09,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1011 [2023-11-06 23:05:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 409.6666666666667) internal successors, (1229), 3 states have internal predecessors, (1229), 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) [2023-11-06 23:05:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:09,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1011 [2023-11-06 23:05:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:11,030 INFO L124 PetriNetUnfolderBase]: 4763/6772 cut-off events. [2023-11-06 23:05:11,031 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2023-11-06 23:05:11,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 6772 events. 4763/6772 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34256 event pairs, 4157 based on Foata normal form. 0/2782 useless extension candidates. Maximal degree in co-relation 12700. Up to 6768 conditions per place. [2023-11-06 23:05:11,087 INFO L140 encePairwiseOnDemand]: 991/1011 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-06 23:05:11,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 243 flow [2023-11-06 23:05:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1297 transitions. [2023-11-06 23:05:11,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42762940982525555 [2023-11-06 23:05:11,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1297 transitions. [2023-11-06 23:05:11,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1297 transitions. [2023-11-06 23:05:11,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:11,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1297 transitions. [2023-11-06 23:05:11,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 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) [2023-11-06 23:05:11,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:11,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:11,149 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1297 transitions. [2023-11-06 23:05:11,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 243 flow [2023-11-06 23:05:11,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:11,160 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 172 flow [2023-11-06 23:05:11,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-06 23:05:11,167 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-11-06 23:05:11,167 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 172 flow [2023-11-06 23:05:11,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.6666666666667) internal successors, (1229), 3 states have internal predecessors, (1229), 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) [2023-11-06 23:05:11,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:11,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:05:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:05:11,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:11,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1850475, now seen corresponding path program 1 times [2023-11-06 23:05:11,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:11,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931347218] [2023-11-06 23:05:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:11,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:11,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931347218] [2023-11-06 23:05:11,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931347218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:11,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:11,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863153486] [2023-11-06 23:05:11,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:11,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:11,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:11,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1011 [2023-11-06 23:05:11,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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) [2023-11-06 23:05:11,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:11,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1011 [2023-11-06 23:05:11,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:12,748 INFO L124 PetriNetUnfolderBase]: 4763/6769 cut-off events. [2023-11-06 23:05:12,748 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:05:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 6769 events. 4763/6769 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34260 event pairs, 4157 based on Foata normal form. 0/2786 useless extension candidates. Maximal degree in co-relation 13717. Up to 6756 conditions per place. [2023-11-06 23:05:12,810 INFO L140 encePairwiseOnDemand]: 1006/1011 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-06 23:05:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 268 flow [2023-11-06 23:05:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1278 transitions. [2023-11-06 23:05:12,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42136498516320475 [2023-11-06 23:05:12,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1278 transitions. [2023-11-06 23:05:12,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1278 transitions. [2023-11-06 23:05:12,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:12,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1278 transitions. [2023-11-06 23:05:12,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 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) [2023-11-06 23:05:12,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:12,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:12,843 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 172 flow. Second operand 3 states and 1278 transitions. [2023-11-06 23:05:12,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 268 flow [2023-11-06 23:05:12,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:12,847 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 152 flow [2023-11-06 23:05:12,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-11-06 23:05:12,850 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-06 23:05:12,850 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 152 flow [2023-11-06 23:05:12,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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) [2023-11-06 23:05:12,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:12,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:05:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:05:12,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:12,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1850474, now seen corresponding path program 1 times [2023-11-06 23:05:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014231045] [2023-11-06 23:05:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014231045] [2023-11-06 23:05:12,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014231045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296768672] [2023-11-06 23:05:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:12,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:12,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:13,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:13,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:05:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:13,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:13,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:13,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296768672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:13,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:13,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:05:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755047559] [2023-11-06 23:05:13,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:13,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:13,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:13,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1011 [2023-11-06 23:05:13,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 410.14285714285717) internal successors, (2871), 7 states have internal predecessors, (2871), 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) [2023-11-06 23:05:13,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:13,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1011 [2023-11-06 23:05:13,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:14,745 INFO L124 PetriNetUnfolderBase]: 4772/6787 cut-off events. [2023-11-06 23:05:14,745 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:05:14,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13829 conditions, 6787 events. 4772/6787 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34284 event pairs, 4157 based on Foata normal form. 0/2796 useless extension candidates. Maximal degree in co-relation 13717. Up to 6768 conditions per place. [2023-11-06 23:05:14,791 INFO L140 encePairwiseOnDemand]: 1001/1011 looper letters, 47 selfloop transitions, 25 changer transitions 0/72 dead transitions. [2023-11-06 23:05:14,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 374 flow [2023-11-06 23:05:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2535 transitions. [2023-11-06 23:05:14,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179030662710188 [2023-11-06 23:05:14,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2535 transitions. [2023-11-06 23:05:14,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2535 transitions. [2023-11-06 23:05:14,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:14,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2535 transitions. [2023-11-06 23:05:14,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 422.5) internal successors, (2535), 6 states have internal predecessors, (2535), 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) [2023-11-06 23:05:14,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1011.0) internal successors, (7077), 7 states have internal predecessors, (7077), 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) [2023-11-06 23:05:14,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1011.0) internal successors, (7077), 7 states have internal predecessors, (7077), 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) [2023-11-06 23:05:14,836 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 152 flow. Second operand 6 states and 2535 transitions. [2023-11-06 23:05:14,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 374 flow [2023-11-06 23:05:14,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:14,842 INFO L231 Difference]: Finished difference. Result has 57 places, 72 transitions, 321 flow [2023-11-06 23:05:14,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=57, PETRI_TRANSITIONS=72} [2023-11-06 23:05:14,846 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-06 23:05:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 72 transitions, 321 flow [2023-11-06 23:05:14,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 410.14285714285717) internal successors, (2871), 7 states have internal predecessors, (2871), 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) [2023-11-06 23:05:14,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:14,849 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:05:14,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:15,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:15,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -705327437, now seen corresponding path program 2 times [2023-11-06 23:05:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:15,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041908523] [2023-11-06 23:05:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:15,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041908523] [2023-11-06 23:05:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041908523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:15,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471906430] [2023-11-06 23:05:15,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:15,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:15,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:15,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:15,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:05:15,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:05:15,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:15,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:15,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:05:15,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471906430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:15,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:05:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608954538] [2023-11-06 23:05:15,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:15,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1011 [2023-11-06 23:05:15,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 72 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2023-11-06 23:05:15,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:15,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1011 [2023-11-06 23:05:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:16,836 INFO L124 PetriNetUnfolderBase]: 4772/6784 cut-off events. [2023-11-06 23:05:16,837 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 23:05:16,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 6784 events. 4772/6784 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34280 event pairs, 4157 based on Foata normal form. 3/2803 useless extension candidates. Maximal degree in co-relation 13788. Up to 6759 conditions per place. [2023-11-06 23:05:16,888 INFO L140 encePairwiseOnDemand]: 1006/1011 looper letters, 63 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-06 23:05:16,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 429 flow [2023-11-06 23:05:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1293 transitions. [2023-11-06 23:05:16,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42631058358061324 [2023-11-06 23:05:16,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1293 transitions. [2023-11-06 23:05:16,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1293 transitions. [2023-11-06 23:05:16,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:16,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1293 transitions. [2023-11-06 23:05:16,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 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) [2023-11-06 23:05:16,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:16,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:16,917 INFO L175 Difference]: Start difference. First operand has 57 places, 72 transitions, 321 flow. Second operand 3 states and 1293 transitions. [2023-11-06 23:05:16,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 429 flow [2023-11-06 23:05:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 344 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:16,923 INFO L231 Difference]: Finished difference. Result has 51 places, 69 transitions, 218 flow [2023-11-06 23:05:16,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=69} [2023-11-06 23:05:16,927 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-06 23:05:16,927 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 69 transitions, 218 flow [2023-11-06 23:05:16,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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) [2023-11-06 23:05:16,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:16,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:16,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:17,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:17,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 494265411, now seen corresponding path program 1 times [2023-11-06 23:05:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351247334] [2023-11-06 23:05:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351247334] [2023-11-06 23:05:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351247334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:17,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:17,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:05:17,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61190375] [2023-11-06 23:05:17,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:17,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:17,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:17,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 1011 [2023-11-06 23:05:17,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 69 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 408.6666666666667) internal successors, (1226), 3 states have internal predecessors, (1226), 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) [2023-11-06 23:05:17,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:17,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 1011 [2023-11-06 23:05:17,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:18,371 INFO L124 PetriNetUnfolderBase]: 4769/6781 cut-off events. [2023-11-06 23:05:18,371 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:05:18,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13810 conditions, 6781 events. 4769/6781 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34198 event pairs, 4157 based on Foata normal form. 1/2796 useless extension candidates. Maximal degree in co-relation 13717. Up to 6773 conditions per place. [2023-11-06 23:05:18,408 INFO L140 encePairwiseOnDemand]: 1004/1011 looper letters, 54 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-11-06 23:05:18,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 336 flow [2023-11-06 23:05:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1269 transitions. [2023-11-06 23:05:18,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41839762611275966 [2023-11-06 23:05:18,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1269 transitions. [2023-11-06 23:05:18,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1269 transitions. [2023-11-06 23:05:18,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:18,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1269 transitions. [2023-11-06 23:05:18,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 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) [2023-11-06 23:05:18,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:18,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:18,430 INFO L175 Difference]: Start difference. First operand has 51 places, 69 transitions, 218 flow. Second operand 3 states and 1269 transitions. [2023-11-06 23:05:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 336 flow [2023-11-06 23:05:18,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:18,435 INFO L231 Difference]: Finished difference. Result has 51 places, 66 transitions, 218 flow [2023-11-06 23:05:18,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=66} [2023-11-06 23:05:18,438 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-06 23:05:18,438 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 218 flow [2023-11-06 23:05:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.6666666666667) internal successors, (1226), 3 states have internal predecessors, (1226), 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) [2023-11-06 23:05:18,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:18,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:18,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:05:18,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:18,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash 923009305, now seen corresponding path program 1 times [2023-11-06 23:05:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226867455] [2023-11-06 23:05:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:05:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226867455] [2023-11-06 23:05:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226867455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:18,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:18,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:18,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617587753] [2023-11-06 23:05:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:18,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:18,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:18,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1011 [2023-11-06 23:05:18,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 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) [2023-11-06 23:05:18,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:18,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1011 [2023-11-06 23:05:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:20,356 INFO L124 PetriNetUnfolderBase]: 8199/11661 cut-off events. [2023-11-06 23:05:20,356 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:05:20,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23724 conditions, 11661 events. 8199/11661 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 67657 event pairs, 4157 based on Foata normal form. 0/4803 useless extension candidates. Maximal degree in co-relation 23648. Up to 6782 conditions per place. [2023-11-06 23:05:20,427 INFO L140 encePairwiseOnDemand]: 1007/1011 looper letters, 98 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-11-06 23:05:20,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 491 flow [2023-11-06 23:05:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1347 transitions. [2023-11-06 23:05:20,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44411473788328387 [2023-11-06 23:05:20,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1347 transitions. [2023-11-06 23:05:20,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1347 transitions. [2023-11-06 23:05:20,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:20,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1347 transitions. [2023-11-06 23:05:20,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 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) [2023-11-06 23:05:20,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:20,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1011.0) internal successors, (4044), 4 states have internal predecessors, (4044), 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) [2023-11-06 23:05:20,449 INFO L175 Difference]: Start difference. First operand has 51 places, 66 transitions, 218 flow. Second operand 3 states and 1347 transitions. [2023-11-06 23:05:20,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 491 flow [2023-11-06 23:05:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 100 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:20,453 INFO L231 Difference]: Finished difference. Result has 52 places, 67 transitions, 208 flow [2023-11-06 23:05:20,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=52, PETRI_TRANSITIONS=67} [2023-11-06 23:05:20,454 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-11-06 23:05:20,455 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 67 transitions, 208 flow [2023-11-06 23:05:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 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) [2023-11-06 23:05:20,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:20,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:05:20,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:20,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 923009310, now seen corresponding path program 1 times [2023-11-06 23:05:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024303082] [2023-11-06 23:05:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:05:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024303082] [2023-11-06 23:05:20,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024303082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158520717] [2023-11-06 23:05:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:20,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:20,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:05:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:20,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:05:20,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:05:20,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158520717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:20,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-06 23:05:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144656303] [2023-11-06 23:05:20,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:20,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:05:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:05:20,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:21,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1011 [2023-11-06 23:05:21,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 67 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 402.375) internal successors, (3219), 8 states have internal predecessors, (3219), 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) [2023-11-06 23:05:21,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:21,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1011 [2023-11-06 23:05:21,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:22,948 INFO L124 PetriNetUnfolderBase]: 8190/11652 cut-off events. [2023-11-06 23:05:22,948 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-06 23:05:22,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24778 conditions, 11652 events. 8190/11652 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 63514 event pairs, 7283 based on Foata normal form. 0/5159 useless extension candidates. Maximal degree in co-relation 24716. Up to 11641 conditions per place. [2023-11-06 23:05:23,006 INFO L140 encePairwiseOnDemand]: 1004/1011 looper letters, 43 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2023-11-06 23:05:23,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 288 flow [2023-11-06 23:05:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2466 transitions. [2023-11-06 23:05:23,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065281899109792 [2023-11-06 23:05:23,017 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2466 transitions. [2023-11-06 23:05:23,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2466 transitions. [2023-11-06 23:05:23,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:23,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2466 transitions. [2023-11-06 23:05:23,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 411.0) internal successors, (2466), 6 states have internal predecessors, (2466), 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) [2023-11-06 23:05:23,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1011.0) internal successors, (7077), 7 states have internal predecessors, (7077), 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) [2023-11-06 23:05:23,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1011.0) internal successors, (7077), 7 states have internal predecessors, (7077), 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) [2023-11-06 23:05:23,039 INFO L175 Difference]: Start difference. First operand has 52 places, 67 transitions, 208 flow. Second operand 6 states and 2466 transitions. [2023-11-06 23:05:23,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 288 flow [2023-11-06 23:05:23,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:23,042 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 200 flow [2023-11-06 23:05:23,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-11-06 23:05:23,043 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-11-06 23:05:23,043 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 200 flow [2023-11-06 23:05:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 402.375) internal successors, (3219), 8 states have internal predecessors, (3219), 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) [2023-11-06 23:05:23,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:23,045 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:23,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:23,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:23,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:23,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash -371725240, now seen corresponding path program 2 times [2023-11-06 23:05:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346490309] [2023-11-06 23:05:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:05:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346490309] [2023-11-06 23:05:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346490309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864993084] [2023-11-06 23:05:23,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:23,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:23,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:23,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:23,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:23,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:05:23,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:23,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:05:23,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:05:23,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:05:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864993084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:23,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:23,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-11-06 23:05:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971682556] [2023-11-06 23:05:23,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:23,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 23:05:23,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:05:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:05:24,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1011 [2023-11-06 23:05:24,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 200 flow. Second operand has 17 states, 17 states have (on average 401.6470588235294) internal successors, (6828), 17 states have internal predecessors, (6828), 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) [2023-11-06 23:05:24,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:24,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1011 [2023-11-06 23:05:24,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:25,682 INFO L124 PetriNetUnfolderBase]: 8190/11655 cut-off events. [2023-11-06 23:05:25,682 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2023-11-06 23:05:25,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24620 conditions, 11655 events. 8190/11655 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 63629 event pairs, 7283 based on Foata normal form. 2/5166 useless extension candidates. Maximal degree in co-relation 24543. Up to 11641 conditions per place. [2023-11-06 23:05:25,733 INFO L140 encePairwiseOnDemand]: 1004/1011 looper letters, 43 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2023-11-06 23:05:25,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 334 flow [2023-11-06 23:05:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:05:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2863 transitions. [2023-11-06 23:05:25,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045499505440158 [2023-11-06 23:05:25,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2863 transitions. [2023-11-06 23:05:25,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2863 transitions. [2023-11-06 23:05:25,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:25,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2863 transitions. [2023-11-06 23:05:25,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 409.0) internal successors, (2863), 7 states have internal predecessors, (2863), 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) [2023-11-06 23:05:25,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1011.0) internal successors, (8088), 8 states have internal predecessors, (8088), 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) [2023-11-06 23:05:25,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1011.0) internal successors, (8088), 8 states have internal predecessors, (8088), 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) [2023-11-06 23:05:25,787 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 200 flow. Second operand 7 states and 2863 transitions. [2023-11-06 23:05:25,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 334 flow [2023-11-06 23:05:25,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 304 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:25,790 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 232 flow [2023-11-06 23:05:25,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1011, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-11-06 23:05:25,794 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-11-06 23:05:25,794 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 232 flow [2023-11-06 23:05:25,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 401.6470588235294) internal successors, (6828), 17 states have internal predecessors, (6828), 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) [2023-11-06 23:05:25,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:25,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:25,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:26,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:26,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-06 23:05:26,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1338374370, now seen corresponding path program 3 times [2023-11-06 23:05:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270798950] [2023-11-06 23:05:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:05:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:28,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270798950] [2023-11-06 23:05:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270798950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046799269] [2023-11-06 23:05:28,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:05:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:28,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:28,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_437aaf0b-fdfd-4cde-8523-e2a719c6c486/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:28,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 23:05:28,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:28,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-06 23:05:28,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 23:05:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,537 INFO L351 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 [2023-11-06 23:05:28,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,547 INFO L351 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 [2023-11-06 23:05:28,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,568 INFO L351 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 [2023-11-06 23:05:28,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,580 INFO L351 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 [2023-11-06 23:05:28,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,600 INFO L351 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 [2023-11-06 23:05:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,612 INFO L351 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 [2023-11-06 23:05:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,625 INFO L351 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 [2023-11-06 23:05:28,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,633 INFO L351 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 [2023-11-06 23:05:28,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,644 INFO L351 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 [2023-11-06 23:05:28,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,656 INFO L351 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 [2023-11-06 23:05:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:28,663 INFO L351 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 [2023-11-06 23:05:28,708 INFO L351 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 [2023-11-06 23:05:28,768 INFO L351 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 23 treesize of output 11 [2023-11-06 23:05:28,811 INFO L351 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 23 treesize of output 11 [2023-11-06 23:05:28,873 INFO L322 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-06 23:05:28,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 15 [2023-11-06 23:05:28,975 INFO L322 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-06 23:05:28,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 19 [2023-11-06 23:05:29,076 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 23:05:29,076 INFO L351 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 17 treesize of output 21 [2023-11-06 23:05:29,134 INFO L351 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 [2023-11-06 23:05:29,211 INFO L351 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 [2023-11-06 23:05:29,274 INFO L351 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 [2023-11-06 23:05:29,306 INFO L351 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 [2023-11-06 23:05:29,334 INFO L351 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 [2023-11-06 23:05:29,432 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 23:05:29,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 23:05:29,488 INFO L351 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 [2023-11-06 23:05:29,515 INFO L351 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 [2023-11-06 23:05:29,537 INFO L351 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 [2023-11-06 23:05:29,564 INFO L351 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 [2023-11-06 23:05:29,583 INFO L351 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 [2023-11-06 23:05:29,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:29,628 INFO L351 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 [2023-11-06 23:05:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:05:29,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:30,172 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_343 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_343))) (or (< (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset) 2147483648) (forall ((~o_2~0.base Int)) (not (= (select (select .cse0 ~o_2~0.base) c_~o_2~0.offset) 0)))))) (forall ((v_ArrVal_343 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_343))) (let ((.cse1 (select (select .cse2 ~o_2~0.base) c_~o_2~0.offset))) (or (< 9223372039002259455 .cse1) (< .cse1 0) (< (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse1 2147483648)) (= .cse1 0)))))) is different from false [2023-11-06 23:05:53,883 INFO L322 Elim1Store]: treesize reduction 280, result has 42.3 percent of original size [2023-11-06 23:05:53,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 459 treesize of output 379 [2023-11-06 23:05:53,969 INFO L322 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-11-06 23:05:53,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1373 treesize of output 1357 [2023-11-06 23:05:54,055 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:54,056 INFO L351 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 359 treesize of output 364 [2023-11-06 23:05:54,117 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:54,118 INFO L351 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 355 treesize of output 348 [2023-11-06 23:05:54,174 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:54,174 INFO L351 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 339 treesize of output 340 [2023-11-06 23:05:54,294 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:54,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 10660 treesize of output 10412 [2023-11-06 23:05:54,859 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:54,860 INFO L351 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 1800 treesize of output 1771 [2023-11-06 23:05:55,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:55,092 INFO L351 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 1762 treesize of output 1619 [2023-11-06 23:05:55,295 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:05:55,296 INFO L351 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 1610 treesize of output 1543