./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:15,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:15,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:11:15,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:15,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:15,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:15,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:15,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:15,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:15,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:15,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:15,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:15,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:15,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:15,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:15,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:15,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:15,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:15,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:15,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:15,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:15,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:15,963 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:11:15,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:15,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:15,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:15,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:15,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:15,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:15,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:15,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:15,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:15,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:15,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:15,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:15,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:15,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:15,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:15,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:15,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:15,971 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:15,972 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_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2023-11-12 02:11:16,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:16,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:16,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:16,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:16,343 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:16,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-12 02:11:19,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:19,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:19,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-12 02:11:19,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/data/ce255b844/f66fd8b78faf49f5bb17d3eea612a7e1/FLAG6f64ddd4f [2023-11-12 02:11:19,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/data/ce255b844/f66fd8b78faf49f5bb17d3eea612a7e1 [2023-11-12 02:11:19,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:19,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:19,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:19,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:19,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:19,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:19" (1/1) ... [2023-11-12 02:11:19,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dce456f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:19, skipping insertion in model container [2023-11-12 02:11:19,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:19" (1/1) ... [2023-11-12 02:11:19,917 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:20,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:20,167 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:20,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:20,255 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:20,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20 WrapperNode [2023-11-12 02:11:20,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:20,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:20,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:20,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:20,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,345 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 342 [2023-11-12 02:11:20,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:20,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:20,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:20,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:20,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:20,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:20,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:20,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:20,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (1/1) ... [2023-11-12 02:11:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:20,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:20,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:20,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:11:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:11:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:11:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:11:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:11:20,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:11:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:11:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:20,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:20,514 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:20,682 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:20,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:21,447 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:21,474 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:21,474 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:11:21,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:21 BoogieIcfgContainer [2023-11-12 02:11:21,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:21,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:21,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:21,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:21,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:19" (1/3) ... [2023-11-12 02:11:21,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b511f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:21, skipping insertion in model container [2023-11-12 02:11:21,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:20" (2/3) ... [2023-11-12 02:11:21,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b511f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:21, skipping insertion in model container [2023-11-12 02:11:21,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:21" (3/3) ... [2023-11-12 02:11:21,493 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-11-12 02:11:21,501 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:11:21,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:21,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-12 02:11:21,511 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:21,749 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:11:21,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 464 transitions, 949 flow [2023-11-12 02:11:22,072 INFO L124 PetriNetUnfolderBase]: 35/461 cut-off events. [2023-11-12 02:11:22,072 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:11:22,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 461 events. 35/461 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 953 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 343. Up to 2 conditions per place. [2023-11-12 02:11:22,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 439 places, 464 transitions, 949 flow [2023-11-12 02:11:22,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 406 places, 429 transitions, 873 flow [2023-11-12 02:11:22,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:22,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 406 places, 429 transitions, 873 flow [2023-11-12 02:11:22,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 406 places, 429 transitions, 873 flow [2023-11-12 02:11:22,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 429 transitions, 873 flow [2023-11-12 02:11:22,300 INFO L124 PetriNetUnfolderBase]: 33/429 cut-off events. [2023-11-12 02:11:22,301 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:11:22,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 429 events. 33/429 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 916 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 343. Up to 2 conditions per place. [2023-11-12 02:11:22,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 44160 [2023-11-12 02:11:52,808 INFO L134 LiptonReduction]: Checked pairs total: 48593 [2023-11-12 02:11:52,809 INFO L136 LiptonReduction]: Total number of compositions: 584 [2023-11-12 02:11:52,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:52,835 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c286fba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:52,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-12 02:11:52,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:52,839 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:11:52,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:52,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:52,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:11:52,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:11:52,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash 61839, now seen corresponding path program 1 times [2023-11-12 02:11:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804655153] [2023-11-12 02:11:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804655153] [2023-11-12 02:11:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804655153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:53,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:11:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888673751] [2023-11-12 02:11:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:53,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:53,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 1048 [2023-11-12 02:11:53,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 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) [2023-11-12 02:11:53,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:53,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 1048 [2023-11-12 02:11:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:55,292 INFO L124 PetriNetUnfolderBase]: 4763/6772 cut-off events. [2023-11-12 02:11:55,292 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-11-12 02:11:55,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 6772 events. 4763/6772 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34222 event pairs, 4157 based on Foata normal form. 0/2782 useless extension candidates. Maximal degree in co-relation 12700. Up to 6768 conditions per place. [2023-11-12 02:11:55,360 INFO L140 encePairwiseOnDemand]: 1028/1048 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-12 02:11:55,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 243 flow [2023-11-12 02:11:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1327 transitions. [2023-11-12 02:11:55,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220737913486005 [2023-11-12 02:11:55,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1327 transitions. [2023-11-12 02:11:55,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1327 transitions. [2023-11-12 02:11:55,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:55,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1327 transitions. [2023-11-12 02:11:55,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.3333333333333) internal successors, (1327), 3 states have internal predecessors, (1327), 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) [2023-11-12 02:11:55,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:11:55,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:11:55,442 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1327 transitions. [2023-11-12 02:11:55,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 243 flow [2023-11-12 02:11:55,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:11:55,455 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 172 flow [2023-11-12 02:11:55,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1048, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-12 02:11:55,462 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-11-12 02:11:55,463 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 172 flow [2023-11-12 02:11:55,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 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) [2023-11-12 02:11:55,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:55,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:55,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:11:55,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:11:55,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1922025, now seen corresponding path program 1 times [2023-11-12 02:11:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024962535] [2023-11-12 02:11:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:55,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:55,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024962535] [2023-11-12 02:11:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024962535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:55,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:55,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69627156] [2023-11-12 02:11:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:55,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:55,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:55,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 1048 [2023-11-12 02:11:55,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 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) [2023-11-12 02:11:55,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:55,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 1048 [2023-11-12 02:11:55,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:57,318 INFO L124 PetriNetUnfolderBase]: 4763/6769 cut-off events. [2023-11-12 02:11:57,318 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-12 02:11:57,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 6769 events. 4763/6769 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34168 event pairs, 4157 based on Foata normal form. 0/2786 useless extension candidates. Maximal degree in co-relation 13717. Up to 6756 conditions per place. [2023-11-12 02:11:57,387 INFO L140 encePairwiseOnDemand]: 1043/1048 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-12 02:11:57,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 268 flow [2023-11-12 02:11:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1308 transitions. [2023-11-12 02:11:57,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41603053435114506 [2023-11-12 02:11:57,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1308 transitions. [2023-11-12 02:11:57,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1308 transitions. [2023-11-12 02:11:57,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:57,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1308 transitions. [2023-11-12 02:11:57,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.0) internal successors, (1308), 3 states have internal predecessors, (1308), 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) [2023-11-12 02:11:57,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:11:57,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:11:57,420 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 172 flow. Second operand 3 states and 1308 transitions. [2023-11-12 02:11:57,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 268 flow [2023-11-12 02:11:57,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:57,423 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 152 flow [2023-11-12 02:11:57,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1048, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-11-12 02:11:57,425 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-12 02:11:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 152 flow [2023-11-12 02:11:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 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) [2023-11-12 02:11:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:57,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:11:57,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:11:57,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1922059, now seen corresponding path program 1 times [2023-11-12 02:11:57,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:57,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503707867] [2023-11-12 02:11:57,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:57,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503707867] [2023-11-12 02:11:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503707867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577134821] [2023-11-12 02:11:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:57,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:57,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:11:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:11:57,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:57,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577134821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:57,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:57,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:11:57,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461055752] [2023-11-12 02:11:57,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:57,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:57,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:57,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 1048 [2023-11-12 02:11:57,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 420.14285714285717) internal successors, (2941), 7 states have internal predecessors, (2941), 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) [2023-11-12 02:11:57,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:57,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 1048 [2023-11-12 02:11:57,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:59,414 INFO L124 PetriNetUnfolderBase]: 4772/6787 cut-off events. [2023-11-12 02:11:59,415 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-12 02:11:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13829 conditions, 6787 events. 4772/6787 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34279 event pairs, 4157 based on Foata normal form. 0/2796 useless extension candidates. Maximal degree in co-relation 13717. Up to 6768 conditions per place. [2023-11-12 02:11:59,457 INFO L140 encePairwiseOnDemand]: 1038/1048 looper letters, 47 selfloop transitions, 25 changer transitions 0/72 dead transitions. [2023-11-12 02:11:59,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 374 flow [2023-11-12 02:11:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2595 transitions. [2023-11-12 02:11:59,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126908396946565 [2023-11-12 02:11:59,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2595 transitions. [2023-11-12 02:11:59,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2595 transitions. [2023-11-12 02:11:59,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:59,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2595 transitions. [2023-11-12 02:11:59,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 432.5) internal successors, (2595), 6 states have internal predecessors, (2595), 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) [2023-11-12 02:11:59,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1048.0) internal successors, (7336), 7 states have internal predecessors, (7336), 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) [2023-11-12 02:11:59,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1048.0) internal successors, (7336), 7 states have internal predecessors, (7336), 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) [2023-11-12 02:11:59,500 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 152 flow. Second operand 6 states and 2595 transitions. [2023-11-12 02:11:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 374 flow [2023-11-12 02:11:59,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:59,503 INFO L231 Difference]: Finished difference. Result has 57 places, 72 transitions, 321 flow [2023-11-12 02:11:59,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1048, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=57, PETRI_TRANSITIONS=72} [2023-11-12 02:11:59,504 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-12 02:11:59,505 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 72 transitions, 321 flow [2023-11-12 02:11:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 420.14285714285717) internal successors, (2941), 7 states have internal predecessors, (2941), 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) [2023-11-12 02:11:59,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:59,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:11:59,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:11:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:59,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:11:59,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1429452849, now seen corresponding path program 2 times [2023-11-12 02:11:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189063028] [2023-11-12 02:11:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:59,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189063028] [2023-11-12 02:11:59,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189063028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949037551] [2023-11-12 02:11:59,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:11:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:59,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:59,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:59,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:11:59,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:11:59,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:59,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:11:59,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:11:59,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949037551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:59,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:59,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:11:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519544107] [2023-11-12 02:11:59,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:59,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:00,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1048 [2023-11-12 02:12:00,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 72 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:00,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:00,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1048 [2023-11-12 02:12:00,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:01,641 INFO L124 PetriNetUnfolderBase]: 4772/6784 cut-off events. [2023-11-12 02:12:01,642 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-12 02:12:01,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 6784 events. 4772/6784 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34207 event pairs, 4157 based on Foata normal form. 3/2803 useless extension candidates. Maximal degree in co-relation 13788. Up to 6759 conditions per place. [2023-11-12 02:12:01,695 INFO L140 encePairwiseOnDemand]: 1043/1048 looper letters, 63 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-12 02:12:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 429 flow [2023-11-12 02:12:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1323 transitions. [2023-11-12 02:12:01,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208015267175573 [2023-11-12 02:12:01,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1323 transitions. [2023-11-12 02:12:01,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1323 transitions. [2023-11-12 02:12:01,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:01,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1323 transitions. [2023-11-12 02:12:01,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 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) [2023-11-12 02:12:01,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:12:01,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:12:01,721 INFO L175 Difference]: Start difference. First operand has 57 places, 72 transitions, 321 flow. Second operand 3 states and 1323 transitions. [2023-11-12 02:12:01,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 429 flow [2023-11-12 02:12:01,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 344 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-12 02:12:01,726 INFO L231 Difference]: Finished difference. Result has 51 places, 69 transitions, 218 flow [2023-11-12 02:12:01,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1048, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=69} [2023-11-12 02:12:01,727 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-12 02:12:01,727 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 69 transitions, 218 flow [2023-11-12 02:12:01,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:01,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:01,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:01,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:01,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:12:01,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1613941146, now seen corresponding path program 1 times [2023-11-12 02:12:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613428572] [2023-11-12 02:12:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613428572] [2023-11-12 02:12:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613428572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:02,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:02,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591978470] [2023-11-12 02:12:02,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:02,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:02,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1048 [2023-11-12 02:12:02,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 69 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 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) [2023-11-12 02:12:02,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:02,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1048 [2023-11-12 02:12:02,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:03,375 INFO L124 PetriNetUnfolderBase]: 4769/6781 cut-off events. [2023-11-12 02:12:03,376 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-12 02:12:03,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13810 conditions, 6781 events. 4769/6781 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34242 event pairs, 4157 based on Foata normal form. 1/2796 useless extension candidates. Maximal degree in co-relation 13717. Up to 6773 conditions per place. [2023-11-12 02:12:03,422 INFO L140 encePairwiseOnDemand]: 1041/1048 looper letters, 54 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-11-12 02:12:03,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 336 flow [2023-11-12 02:12:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-11-12 02:12:03,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131679389312977 [2023-11-12 02:12:03,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-11-12 02:12:03,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-11-12 02:12:03,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:03,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-11-12 02:12:03,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 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) [2023-11-12 02:12:03,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:12:03,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1048.0) internal successors, (4192), 4 states have internal predecessors, (4192), 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) [2023-11-12 02:12:03,448 INFO L175 Difference]: Start difference. First operand has 51 places, 69 transitions, 218 flow. Second operand 3 states and 1299 transitions. [2023-11-12 02:12:03,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 336 flow [2023-11-12 02:12:03,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:03,452 INFO L231 Difference]: Finished difference. Result has 51 places, 66 transitions, 218 flow [2023-11-12 02:12:03,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1048, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=66} [2023-11-12 02:12:03,453 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-12 02:12:03,453 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 218 flow [2023-11-12 02:12:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 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) [2023-11-12 02:12:03,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:03,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:03,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-12 02:12:03,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1125421691, now seen corresponding path program 1 times [2023-11-12 02:12:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210214301] [2023-11-12 02:12:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:12:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210214301] [2023-11-12 02:12:03,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210214301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050405556] [2023-11-12 02:12:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:03,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f64fba-60a5-46ef-86c0-dd07b978723d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:12:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:12:03,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:12:03,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:12:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050405556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:03,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-12 02:12:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142371005] [2023-11-12 02:12:03,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:04,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 1048 [2023-11-12 02:12:04,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 412.125) internal successors, (3297), 8 states have internal predecessors, (3297), 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) [2023-11-12 02:12:04,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:04,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 1048 [2023-11-12 02:12:04,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand