./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/clever.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_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/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_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/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_c1759c79-6fed-4b2f-a9d5-92b13f30a717/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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:22,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:22,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:00:22,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:22,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:22,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:22,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:22,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:22,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:22,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:22,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:22,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:22,254 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:22,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:22,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:22,257 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:22,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:22,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:22,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:22,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:22,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:22,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:22,261 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:00:22,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:22,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:22,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:22,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:22,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:22,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:22,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:22,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:22,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:22,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:22,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:22,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:22,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:22,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:22,269 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:22,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:22,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:22,270 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:22,271 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_c1759c79-6fed-4b2f-a9d5-92b13f30a717/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e [2023-11-06 23:00:22,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:22,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:22,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:22,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:22,631 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:22,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/clever.wvr.c [2023-11-06 23:00:25,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:25,918 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:25,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/sv-benchmarks/c/weaver/clever.wvr.c [2023-11-06 23:00:25,932 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/data/d57a22fc5/af15f11c12824ec5a95d85183299db12/FLAGf737ce70d [2023-11-06 23:00:25,955 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/data/d57a22fc5/af15f11c12824ec5a95d85183299db12 [2023-11-06 23:00:25,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:25,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:25,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:25,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:25,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:25,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:25" (1/1) ... [2023-11-06 23:00:25,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19dcd330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:25, skipping insertion in model container [2023-11-06 23:00:25,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:25" (1/1) ... [2023-11-06 23:00:26,007 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:26,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:26,219 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:26,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:26,271 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:26,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26 WrapperNode [2023-11-06 23:00:26,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:26,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:26,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:26,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:26,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,317 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-11-06 23:00:26,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:26,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:26,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:26,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:26,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:26,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:26,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:26,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:26,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (1/1) ... [2023-11-06 23:00:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:26,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:26,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:00:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:00:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:00:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:00:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:00:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:00:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:00:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:00:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:00:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:00:26,429 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 23:00:26,529 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:26,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:26,780 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:26,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:26,790 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:00:26,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:26 BoogieIcfgContainer [2023-11-06 23:00:26,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:26,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:00:26,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:00:26,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:00:26,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:25" (1/3) ... [2023-11-06 23:00:26,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413113bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:26, skipping insertion in model container [2023-11-06 23:00:26,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:26" (2/3) ... [2023-11-06 23:00:26,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413113bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:26, skipping insertion in model container [2023-11-06 23:00:26,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:26" (3/3) ... [2023-11-06 23:00:26,803 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-11-06 23:00:26,813 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:00:26,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:00:26,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 23:00:26,825 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:00:26,968 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:00:27,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 138 transitions, 290 flow [2023-11-06 23:00:27,088 INFO L124 PetriNetUnfolderBase]: 9/136 cut-off events. [2023-11-06 23:00:27,088 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:00:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 9/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-06 23:00:27,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 138 transitions, 290 flow [2023-11-06 23:00:27,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 114 transitions, 237 flow [2023-11-06 23:00:27,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:00:27,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 114 transitions, 237 flow [2023-11-06 23:00:27,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 114 transitions, 237 flow [2023-11-06 23:00:27,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 114 transitions, 237 flow [2023-11-06 23:00:27,161 INFO L124 PetriNetUnfolderBase]: 8/114 cut-off events. [2023-11-06 23:00:27,161 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:00:27,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 114 events. 8/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-06 23:00:27,165 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-11-06 23:00:31,491 INFO L134 LiptonReduction]: Checked pairs total: 1183 [2023-11-06 23:00:31,491 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-06 23:00:31,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:00:31,517 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;@58d2b444, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:00:31,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-06 23:00:31,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:00:31,522 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2023-11-06 23:00:31,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:31,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:31,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:00:31,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:31,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 15336165, now seen corresponding path program 1 times [2023-11-06 23:00:31,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:31,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807788255] [2023-11-06 23:00:31,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:31,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:31,813 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 23:00:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807788255] [2023-11-06 23:00:31,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807788255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:31,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:31,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:00:31,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648784065] [2023-11-06 23:00:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:31,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:31,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 254 [2023-11-06 23:00:31,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 23:00:31,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:31,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 254 [2023-11-06 23:00:31,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:31,990 INFO L124 PetriNetUnfolderBase]: 103/172 cut-off events. [2023-11-06 23:00:31,990 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 23:00:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 172 events. 103/172 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 514 event pairs, 69 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 320. Up to 172 conditions per place. [2023-11-06 23:00:31,994 INFO L140 encePairwiseOnDemand]: 252/254 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-06 23:00:31,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 81 flow [2023-11-06 23:00:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-11-06 23:00:32,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131233595800525 [2023-11-06 23:00:32,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-11-06 23:00:32,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-11-06 23:00:32,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:32,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-11-06 23:00:32,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 23:00:32,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,033 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 47 flow. Second operand 3 states and 391 transitions. [2023-11-06 23:00:32,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 81 flow [2023-11-06 23:00:32,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:00:32,039 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 42 flow [2023-11-06 23:00:32,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-11-06 23:00:32,045 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-11-06 23:00:32,045 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 42 flow [2023-11-06 23:00:32,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 23:00:32,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:32,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:00:32,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:00:32,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:32,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:32,048 INFO L85 PathProgramCache]: Analyzing trace with hash 15336166, now seen corresponding path program 1 times [2023-11-06 23:00:32,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:32,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978481261] [2023-11-06 23:00:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,141 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 23:00:32,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978481261] [2023-11-06 23:00:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978481261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:32,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:32,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:00:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384185143] [2023-11-06 23:00:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:32,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 254 [2023-11-06 23:00:32,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 23:00:32,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:32,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 254 [2023-11-06 23:00:32,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:32,286 INFO L124 PetriNetUnfolderBase]: 191/318 cut-off events. [2023-11-06 23:00:32,287 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:00:32,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 318 events. 191/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1155 event pairs, 57 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 657. Up to 181 conditions per place. [2023-11-06 23:00:32,295 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-06 23:00:32,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 33 transitions, 141 flow [2023-11-06 23:00:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2023-11-06 23:00:32,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328083989501312 [2023-11-06 23:00:32,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2023-11-06 23:00:32,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2023-11-06 23:00:32,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:32,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2023-11-06 23:00:32,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 23:00:32,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,312 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 42 flow. Second operand 3 states and 406 transitions. [2023-11-06 23:00:32,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 33 transitions, 141 flow [2023-11-06 23:00:32,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 33 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:32,319 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 53 flow [2023-11-06 23:00:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-06 23:00:32,320 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-11-06 23:00:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 53 flow [2023-11-06 23:00:32,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 23:00:32,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:32,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:00:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:00:32,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:32,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash 15336187, now seen corresponding path program 1 times [2023-11-06 23:00:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:32,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036387812] [2023-11-06 23:00:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,443 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 23:00:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036387812] [2023-11-06 23:00:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036387812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:32,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013069512] [2023-11-06 23:00:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:32,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:32,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 254 [2023-11-06 23:00:32,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 23:00:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 254 [2023-11-06 23:00:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:32,580 INFO L124 PetriNetUnfolderBase]: 289/474 cut-off events. [2023-11-06 23:00:32,580 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 23:00:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 474 events. 289/474 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1923 event pairs, 135 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 1059. Up to 319 conditions per place. [2023-11-06 23:00:32,585 INFO L140 encePairwiseOnDemand]: 250/254 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-06 23:00:32,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 34 transitions, 161 flow [2023-11-06 23:00:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-11-06 23:00:32,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288713910761155 [2023-11-06 23:00:32,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-11-06 23:00:32,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-11-06 23:00:32,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:32,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-11-06 23:00:32,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 23:00:32,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,595 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 53 flow. Second operand 3 states and 403 transitions. [2023-11-06 23:00:32,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 34 transitions, 161 flow [2023-11-06 23:00:32,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:32,597 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 71 flow [2023-11-06 23:00:32,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-06 23:00:32,598 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-11-06 23:00:32,598 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 71 flow [2023-11-06 23:00:32,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 23:00:32,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:32,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:00:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:00:32,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:32,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 475462334, now seen corresponding path program 1 times [2023-11-06 23:00:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:32,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576755927] [2023-11-06 23:00:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,673 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 23:00:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576755927] [2023-11-06 23:00:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576755927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:00:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736882427] [2023-11-06 23:00:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:32,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 254 [2023-11-06 23:00:32,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 23:00:32,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:32,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 254 [2023-11-06 23:00:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:32,817 INFO L124 PetriNetUnfolderBase]: 451/712 cut-off events. [2023-11-06 23:00:32,817 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-06 23:00:32,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 712 events. 451/712 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2965 event pairs, 149 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 1749. Up to 374 conditions per place. [2023-11-06 23:00:32,824 INFO L140 encePairwiseOnDemand]: 250/254 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-06 23:00:32,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 37 transitions, 200 flow [2023-11-06 23:00:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-11-06 23:00:32,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301837270341208 [2023-11-06 23:00:32,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-11-06 23:00:32,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-11-06 23:00:32,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:32,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-11-06 23:00:32,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 23:00:32,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:32,835 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 71 flow. Second operand 3 states and 404 transitions. [2023-11-06 23:00:32,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 37 transitions, 200 flow [2023-11-06 23:00:32,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 37 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:00:32,841 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 89 flow [2023-11-06 23:00:32,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-06 23:00:32,843 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-11-06 23:00:32,844 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 89 flow [2023-11-06 23:00:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 23:00:32,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:32,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:00:32,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:00:32,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:32,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1854430887, now seen corresponding path program 1 times [2023-11-06 23:00:32,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:32,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643134353] [2023-11-06 23:00:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,969 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 23:00:32,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:32,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643134353] [2023-11-06 23:00:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643134353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:32,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008639359] [2023-11-06 23:00:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:00:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:00:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:00:32,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 254 [2023-11-06 23:00:33,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 23:00:33,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:33,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 254 [2023-11-06 23:00:33,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:33,112 INFO L124 PetriNetUnfolderBase]: 351/574 cut-off events. [2023-11-06 23:00:33,112 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-11-06 23:00:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 574 events. 351/574 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2374 event pairs, 97 based on Foata normal form. 76/540 useless extension candidates. Maximal degree in co-relation 1535. Up to 338 conditions per place. [2023-11-06 23:00:33,118 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 23:00:33,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 196 flow [2023-11-06 23:00:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:00:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:00:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 527 transitions. [2023-11-06 23:00:33,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187007874015748 [2023-11-06 23:00:33,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 527 transitions. [2023-11-06 23:00:33,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 527 transitions. [2023-11-06 23:00:33,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:33,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 527 transitions. [2023-11-06 23:00:33,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 23:00:33,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 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 23:00:33,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 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 23:00:33,128 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 89 flow. Second operand 4 states and 527 transitions. [2023-11-06 23:00:33,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 196 flow [2023-11-06 23:00:33,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:00:33,130 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 79 flow [2023-11-06 23:00:33,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-11-06 23:00:33,131 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-11-06 23:00:33,132 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 79 flow [2023-11-06 23:00:33,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 23:00:33,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:33,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:00:33,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:00:33,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:33,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 475422408, now seen corresponding path program 1 times [2023-11-06 23:00:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364245433] [2023-11-06 23:00:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:33,181 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 23:00:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364245433] [2023-11-06 23:00:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364245433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614437965] [2023-11-06 23:00:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:33,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:33,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:33,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:33,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:00:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:33,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:33,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:33,317 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 23:00:33,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:33,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614437965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:33,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:00:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17827845] [2023-11-06 23:00:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:00:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:00:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:00:33,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 254 [2023-11-06 23:00:33,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 23:00:33,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:33,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 254 [2023-11-06 23:00:33,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:33,488 INFO L124 PetriNetUnfolderBase]: 317/516 cut-off events. [2023-11-06 23:00:33,488 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-06 23:00:33,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 516 events. 317/516 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2071 event pairs, 27 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1375. Up to 259 conditions per place. [2023-11-06 23:00:33,494 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-06 23:00:33,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 241 flow [2023-11-06 23:00:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:00:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:00:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 532 transitions. [2023-11-06 23:00:33,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236220472440944 [2023-11-06 23:00:33,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 532 transitions. [2023-11-06 23:00:33,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 532 transitions. [2023-11-06 23:00:33,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:33,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 532 transitions. [2023-11-06 23:00:33,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 23:00:33,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 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 23:00:33,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 254.0) internal successors, (1270), 5 states have internal predecessors, (1270), 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 23:00:33,505 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 79 flow. Second operand 4 states and 532 transitions. [2023-11-06 23:00:33,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 241 flow [2023-11-06 23:00:33,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:00:33,510 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 82 flow [2023-11-06 23:00:33,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-11-06 23:00:33,511 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-11-06 23:00:33,511 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 82 flow [2023-11-06 23:00:33,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 23:00:33,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:33,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:00:33,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:33,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:33,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash 475422409, now seen corresponding path program 1 times [2023-11-06 23:00:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622132844] [2023-11-06 23:00:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:33,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:33,773 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 23:00:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622132844] [2023-11-06 23:00:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622132844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543666998] [2023-11-06 23:00:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:33,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:33,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:00:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:33,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:33,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:33,866 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 23:00:33,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:33,885 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 23:00:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543666998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:33,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:00:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663406607] [2023-11-06 23:00:33,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:00:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:00:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:00:33,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 254 [2023-11-06 23:00:33,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 124.42857142857143) internal successors, (871), 7 states have internal predecessors, (871), 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 23:00:33,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:33,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 254 [2023-11-06 23:00:33,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:34,155 INFO L124 PetriNetUnfolderBase]: 674/1083 cut-off events. [2023-11-06 23:00:34,156 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-11-06 23:00:34,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1083 events. 674/1083 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4896 event pairs, 140 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2983. Up to 328 conditions per place. [2023-11-06 23:00:34,167 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 70 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2023-11-06 23:00:34,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 79 transitions, 438 flow [2023-11-06 23:00:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:00:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:00:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 809 transitions. [2023-11-06 23:00:34,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308398950131233 [2023-11-06 23:00:34,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 809 transitions. [2023-11-06 23:00:34,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 809 transitions. [2023-11-06 23:00:34,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:34,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 809 transitions. [2023-11-06 23:00:34,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 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 23:00:34,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 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 23:00:34,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 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 23:00:34,178 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 82 flow. Second operand 6 states and 809 transitions. [2023-11-06 23:00:34,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 79 transitions, 438 flow [2023-11-06 23:00:34,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 79 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:34,182 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 141 flow [2023-11-06 23:00:34,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-06 23:00:34,183 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-11-06 23:00:34,183 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 141 flow [2023-11-06 23:00:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.42857142857143) internal successors, (871), 7 states have internal predecessors, (871), 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 23:00:34,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:34,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:00:34,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:34,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:34,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1854430889, now seen corresponding path program 1 times [2023-11-06 23:00:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201815684] [2023-11-06 23:00:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:34,447 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 23:00:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201815684] [2023-11-06 23:00:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201815684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247082317] [2023-11-06 23:00:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:34,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:34,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:34,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:00:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:34,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:34,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:00:34,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247082317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:34,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:34,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2023-11-06 23:00:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963826951] [2023-11-06 23:00:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:34,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:34,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:00:34,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 254 [2023-11-06 23:00:34,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 23:00:34,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:34,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 254 [2023-11-06 23:00:34,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:34,694 INFO L124 PetriNetUnfolderBase]: 555/894 cut-off events. [2023-11-06 23:00:34,694 INFO L125 PetriNetUnfolderBase]: For 470/470 co-relation queries the response was YES. [2023-11-06 23:00:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 894 events. 555/894 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3817 event pairs, 375 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 2705. Up to 894 conditions per place. [2023-11-06 23:00:34,702 INFO L140 encePairwiseOnDemand]: 252/254 looper letters, 22 selfloop transitions, 1 changer transitions 3/26 dead transitions. [2023-11-06 23:00:34,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 189 flow [2023-11-06 23:00:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-11-06 23:00:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131233595800525 [2023-11-06 23:00:34,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-11-06 23:00:34,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-11-06 23:00:34,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:34,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-11-06 23:00:34,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 23:00:34,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:34,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:34,709 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 141 flow. Second operand 3 states and 391 transitions. [2023-11-06 23:00:34,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 189 flow [2023-11-06 23:00:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 177 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:34,714 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 120 flow [2023-11-06 23:00:34,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-06 23:00:34,715 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-11-06 23:00:34,715 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 120 flow [2023-11-06 23:00:34,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 23:00:34,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:34,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:00:34,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:34,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:34,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:34,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1853194528, now seen corresponding path program 1 times [2023-11-06 23:00:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51417829] [2023-11-06 23:00:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51417829] [2023-11-06 23:00:34,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51417829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181213528] [2023-11-06 23:00:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:34,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:34,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:34,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:34,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:00:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:35,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:35,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:00:35,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:00:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181213528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:35,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:35,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 23:00:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917120950] [2023-11-06 23:00:35,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:35,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:00:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:00:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:00:35,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 254 [2023-11-06 23:00:35,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 23:00:35,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:35,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 254 [2023-11-06 23:00:35,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:35,338 INFO L124 PetriNetUnfolderBase]: 627/968 cut-off events. [2023-11-06 23:00:35,338 INFO L125 PetriNetUnfolderBase]: For 695/695 co-relation queries the response was YES. [2023-11-06 23:00:35,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 968 events. 627/968 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3775 event pairs, 75 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 3057. Up to 364 conditions per place. [2023-11-06 23:00:35,348 INFO L140 encePairwiseOnDemand]: 250/254 looper letters, 54 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2023-11-06 23:00:35,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 63 transitions, 445 flow [2023-11-06 23:00:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:00:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:00:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2023-11-06 23:00:35,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967191601049869 [2023-11-06 23:00:35,352 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 757 transitions. [2023-11-06 23:00:35,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 757 transitions. [2023-11-06 23:00:35,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:35,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 757 transitions. [2023-11-06 23:00:35,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 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 23:00:35,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 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 23:00:35,359 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 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 23:00:35,359 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 120 flow. Second operand 6 states and 757 transitions. [2023-11-06 23:00:35,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 63 transitions, 445 flow [2023-11-06 23:00:35,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 63 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:35,367 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 184 flow [2023-11-06 23:00:35,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-06 23:00:35,368 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2023-11-06 23:00:35,368 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 184 flow [2023-11-06 23:00:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 23:00:35,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:35,369 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 23:00:35,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:35,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:35,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:00:35,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1492578756, now seen corresponding path program 2 times [2023-11-06 23:00:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911034290] [2023-11-06 23:00:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:35,674 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 23:00:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911034290] [2023-11-06 23:00:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911034290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027193104] [2023-11-06 23:00:35,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:00:35,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:35,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:00:35,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:00:35,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:00:35,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:35,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:35,766 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 23:00:35,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027193104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:00:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370556342] [2023-11-06 23:00:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:00:35,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 254 [2023-11-06 23:00:35,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 23:00:35,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:35,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 254 [2023-11-06 23:00:35,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:35,935 INFO L124 PetriNetUnfolderBase]: 585/896 cut-off events. [2023-11-06 23:00:35,935 INFO L125 PetriNetUnfolderBase]: For 1226/1226 co-relation queries the response was YES. [2023-11-06 23:00:35,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 896 events. 585/896 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3408 event pairs, 363 based on Foata normal form. 30/926 useless extension candidates. Maximal degree in co-relation 3119. Up to 896 conditions per place. [2023-11-06 23:00:35,941 INFO L140 encePairwiseOnDemand]: 252/254 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-11-06 23:00:35,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 228 flow [2023-11-06 23:00:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-06 23:00:35,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065616797900262 [2023-11-06 23:00:35,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-06 23:00:35,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-06 23:00:35,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:35,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-06 23:00:35,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 23:00:35,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:35,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 23:00:35,949 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 184 flow. Second operand 3 states and 386 transitions. [2023-11-06 23:00:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 228 flow [2023-11-06 23:00:35,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 195 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-06 23:00:35,958 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-11-06 23:00:35,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-11-06 23:00:35,959 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-11-06 23:00:35,959 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-11-06 23:00:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 23:00:35,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-06 23:00:35,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-06 23:00:35,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-06 23:00:35,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-06 23:00:35,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-06 23:00:35,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-06 23:00:35,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2023-11-06 23:00:35,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-11-06 23:00:35,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-11-06 23:00:35,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-11-06 23:00:35,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-06 23:00:35,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-06 23:00:35,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-06 23:00:35,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-06 23:00:35,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:36,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:36,171 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:36,176 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:00:36,176 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:00:36,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:00:36 BasicIcfg [2023-11-06 23:00:36,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:00:36,180 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:00:36,181 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:00:36,181 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:00:36,181 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:26" (3/4) ... [2023-11-06 23:00:36,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:00:36,188 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:00:36,188 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:00:36,196 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-06 23:00:36,196 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:00:36,197 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:00:36,197 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:00:36,261 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:00:36,261 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:00:36,261 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:00:36,262 INFO L158 Benchmark]: Toolchain (without parser) took 10297.56ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 100.9MB in the beginning and 143.4MB in the end (delta: -42.5MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,262 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:36,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.85ms. Allocated memory is still 146.8MB. Free memory was 100.8MB in the beginning and 89.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.78ms. Allocated memory is still 146.8MB. Free memory was 89.7MB in the beginning and 88.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:36,264 INFO L158 Benchmark]: Boogie Preprocessor took 27.55ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 86.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,264 INFO L158 Benchmark]: RCFGBuilder took 446.04ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 71.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,264 INFO L158 Benchmark]: TraceAbstraction took 9384.24ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 71.3MB in the beginning and 147.2MB in the end (delta: -75.9MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,265 INFO L158 Benchmark]: Witness Printer took 80.87ms. Allocated memory is still 211.8MB. Free memory was 146.5MB in the beginning and 143.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:00:36,267 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.85ms. Allocated memory is still 146.8MB. Free memory was 100.8MB in the beginning and 89.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.78ms. Allocated memory is still 146.8MB. Free memory was 89.7MB in the beginning and 88.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.55ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 86.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.04ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 71.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9384.24ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 71.3MB in the beginning and 147.2MB in the end (delta: -75.9MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. * Witness Printer took 80.87ms. Allocated memory is still 211.8MB. Free memory was 146.5MB in the beginning and 143.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 113 PlacesBefore, 23 PlacesAfterwards, 114 TransitionsBefore, 19 TransitionsAfterwards, 1300 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 116 TotalNumberOfCompositions, 1183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 1183, independent conditional: 0, independent unconditional: 1183, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 657, independent conditional: 0, independent unconditional: 657, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 526, independent conditional: 0, independent unconditional: 526, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 398 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 282 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 616 IncrementalHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 29 mSDtfsCounter, 616 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=9, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 2 NumberOfNonLiveVariables, 363 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 15/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:00:36,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1759c79-6fed-4b2f-a9d5-92b13f30a717/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE