./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/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_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/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_e0e38936-d15a-48b7-aec6-8bced84ae163/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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:05,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:05,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:06:05,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:05,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:05,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:05,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:05,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:05,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:05,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:05,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:05,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:05,389 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:05,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:05,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:06:05,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:05,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:05,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:05,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:05,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:06:05,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:05,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:06:05,396 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:06:05,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:06:05,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:05,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:05,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:05,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:05,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:05,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:05,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:05,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:05,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:05,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:06:05,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:05,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:05,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:05,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:06:05,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:05,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:05,407 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:05,412 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_e0e38936-d15a-48b7-aec6-8bced84ae163/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2023-11-06 23:06:05,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:05,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:05,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:05,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:05,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:05,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-06 23:06:08,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:09,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:09,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-06 23:06:09,266 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/data/8fb6a1d68/1bd3545f5365410a876207061c1a73b3/FLAGb73968b40 [2023-11-06 23:06:09,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/data/8fb6a1d68/1bd3545f5365410a876207061c1a73b3 [2023-11-06 23:06:09,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:09,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:09,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:09,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:09,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:09,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd6a956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09, skipping insertion in model container [2023-11-06 23:06:09,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:09,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:09,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:09,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:09,675 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:09,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09 WrapperNode [2023-11-06 23:06:09,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:09,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:09,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:09,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:09,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,767 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 737 [2023-11-06 23:06:09,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:09,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:09,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:09,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:09,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:09,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:09,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:09,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:09,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (1/1) ... [2023-11-06 23:06:09,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:09,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:09,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:06:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:06:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:06:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:06:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:06:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:06:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:06:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:06:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:06:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:06:09,980 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 23:06:10,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:10,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:11,392 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:11,416 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:11,416 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 23:06:11,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:11 BoogieIcfgContainer [2023-11-06 23:06:11,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:11,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:11,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:11,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:11,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:09" (1/3) ... [2023-11-06 23:06:11,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae0f2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:11, skipping insertion in model container [2023-11-06 23:06:11,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:09" (2/3) ... [2023-11-06 23:06:11,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae0f2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:11, skipping insertion in model container [2023-11-06 23:06:11,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:11" (3/3) ... [2023-11-06 23:06:11,438 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-11-06 23:06:11,448 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:06:11,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:11,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-06 23:06:11,460 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:06:11,756 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:06:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 999 transitions, 2019 flow [2023-11-06 23:06:12,508 INFO L124 PetriNetUnfolderBase]: 91/996 cut-off events. [2023-11-06 23:06:12,508 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:06:12,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 996 events. 91/996 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4101 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 736. Up to 2 conditions per place. [2023-11-06 23:06:12,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 918 places, 999 transitions, 2019 flow [2023-11-06 23:06:12,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 892 places, 972 transitions, 1959 flow [2023-11-06 23:06:12,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:06:12,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 892 places, 972 transitions, 1959 flow [2023-11-06 23:06:12,623 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 892 places, 972 transitions, 1959 flow [2023-11-06 23:06:12,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 892 places, 972 transitions, 1959 flow [2023-11-06 23:06:13,154 INFO L124 PetriNetUnfolderBase]: 90/972 cut-off events. [2023-11-06 23:06:13,154 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:06:13,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 972 events. 90/972 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4031 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 736. Up to 2 conditions per place. [2023-11-06 23:06:13,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 359934 [2023-11-06 23:07:24,930 INFO L134 LiptonReduction]: Checked pairs total: 362880 [2023-11-06 23:07:24,930 INFO L136 LiptonReduction]: Total number of compositions: 1331 [2023-11-06 23:07:24,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:24,954 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;@f459191, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:24,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-11-06 23:07:24,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:24,957 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:07:24,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:24,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:24,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:07:24,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-06 23:07:24,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash 142160, now seen corresponding path program 1 times [2023-11-06 23:07:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675589997] [2023-11-06 23:07:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,337 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 23:07:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675589997] [2023-11-06 23:07:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675589997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141475900] [2023-11-06 23:07:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:25,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 2330 [2023-11-06 23:07:25,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 107 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 940.6666666666666) internal successors, (2822), 3 states have internal predecessors, (2822), 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 23:07:25,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:25,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 2330 [2023-11-06 23:07:25,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:36,886 INFO L124 PetriNetUnfolderBase]: 48941/66982 cut-off events. [2023-11-06 23:07:36,886 INFO L125 PetriNetUnfolderBase]: For 1585/1585 co-relation queries the response was YES. [2023-11-06 23:07:36,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135521 conditions, 66982 events. 48941/66982 cut-off events. For 1585/1585 co-relation queries the response was YES. Maximal size of possible extension queue 2185. Compared 402646 event pairs, 41373 based on Foata normal form. 0/25606 useless extension candidates. Maximal degree in co-relation 130712. Up to 66978 conditions per place. [2023-11-06 23:07:37,336 INFO L140 encePairwiseOnDemand]: 2301/2330 looper letters, 90 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2023-11-06 23:07:37,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 97 transitions, 403 flow [2023-11-06 23:07:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2939 transitions. [2023-11-06 23:07:37,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204577968526466 [2023-11-06 23:07:37,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2939 transitions. [2023-11-06 23:07:37,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2939 transitions. [2023-11-06 23:07:37,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:37,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2939 transitions. [2023-11-06 23:07:37,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 979.6666666666666) internal successors, (2939), 3 states have internal predecessors, (2939), 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 23:07:37,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2330.0) internal successors, (9320), 4 states have internal predecessors, (9320), 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 23:07:37,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2330.0) internal successors, (9320), 4 states have internal predecessors, (9320), 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 23:07:37,430 INFO L175 Difference]: Start difference. First operand has 104 places, 107 transitions, 229 flow. Second operand 3 states and 2939 transitions. [2023-11-06 23:07:37,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 97 transitions, 403 flow [2023-11-06 23:07:37,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 394 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:37,515 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 252 flow [2023-11-06 23:07:37,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2330, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2023-11-06 23:07:37,522 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -16 predicate places. [2023-11-06 23:07:37,522 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 252 flow [2023-11-06 23:07:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 940.6666666666666) internal successors, (2822), 3 states have internal predecessors, (2822), 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 23:07:37,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:37,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:37,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:37,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-06 23:07:37,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash 4416936, now seen corresponding path program 1 times [2023-11-06 23:07:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222136989] [2023-11-06 23:07:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,785 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 23:07:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222136989] [2023-11-06 23:07:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222136989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943536270] [2023-11-06 23:07:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:37,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:37,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 2330 [2023-11-06 23:07:37,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 941.0) internal successors, (2823), 3 states have internal predecessors, (2823), 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 23:07:37,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:37,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 2330 [2023-11-06 23:07:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:48,035 INFO L124 PetriNetUnfolderBase]: 48941/66979 cut-off events. [2023-11-06 23:07:48,035 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-11-06 23:07:48,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135162 conditions, 66979 events. 48941/66979 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 2185. Compared 401695 event pairs, 41373 based on Foata normal form. 0/25610 useless extension candidates. Maximal degree in co-relation 135103. Up to 66966 conditions per place. [2023-11-06 23:07:48,400 INFO L140 encePairwiseOnDemand]: 2325/2330 looper letters, 91 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-11-06 23:07:48,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 94 transitions, 428 flow [2023-11-06 23:07:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2911 transitions. [2023-11-06 23:07:48,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41645207439198856 [2023-11-06 23:07:48,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2911 transitions. [2023-11-06 23:07:48,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2911 transitions. [2023-11-06 23:07:48,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:48,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2911 transitions. [2023-11-06 23:07:48,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 970.3333333333334) internal successors, (2911), 3 states have internal predecessors, (2911), 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 23:07:48,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2330.0) internal successors, (9320), 4 states have internal predecessors, (9320), 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 23:07:48,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2330.0) internal successors, (9320), 4 states have internal predecessors, (9320), 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 23:07:48,456 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 252 flow. Second operand 3 states and 2911 transitions. [2023-11-06 23:07:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 94 transitions, 428 flow [2023-11-06 23:07:48,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:48,464 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 232 flow [2023-11-06 23:07:48,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2330, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2023-11-06 23:07:48,467 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -19 predicate places. [2023-11-06 23:07:48,467 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 232 flow [2023-11-06 23:07:48,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 941.0) internal successors, (2823), 3 states have internal predecessors, (2823), 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 23:07:48,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:48,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:48,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:48,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-06 23:07:48,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 4417130, now seen corresponding path program 1 times [2023-11-06 23:07:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:48,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97258798] [2023-11-06 23:07:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,630 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 23:07:48,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:48,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97258798] [2023-11-06 23:07:48,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97258798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70483364] [2023-11-06 23:07:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:48,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0e38936-d15a-48b7-aec6-8bced84ae163/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:48,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:48,895 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 23:07:48,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:48,913 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 23:07:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70483364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:48,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:48,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:07:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490927385] [2023-11-06 23:07:48,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:48,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:49,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 2330 [2023-11-06 23:07:49,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 941.1428571428571) internal successors, (6588), 7 states have internal predecessors, (6588), 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 23:07:49,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:49,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 2330 [2023-11-06 23:07:49,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand