./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/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_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/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_58cd6348-fa06-4583-be27-d48be7e7e6fe/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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:11,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:11,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:11,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:11,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:11,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:11,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:11,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:11,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:11,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:11,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:11,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:11,719 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:11,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:11,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:11,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:11,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:11,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:11,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:11,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:11,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:11,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:11,726 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:11,727 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:11,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:11,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:11,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:11,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:11,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:11,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:11,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:11,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:11,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:11,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:11,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:11,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:11,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:11,734 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:11,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:11,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:11,735 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:11,736 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_58cd6348-fa06-4583-be27-d48be7e7e6fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2023-11-06 23:07:12,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:12,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:12,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:12,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:12,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:12,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 23:07:15,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:15,668 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:15,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 23:07:15,711 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/data/ab0fe04ae/d48e80697a174fc38394f9fc4a5a0c03/FLAGddb0984be [2023-11-06 23:07:15,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/data/ab0fe04ae/d48e80697a174fc38394f9fc4a5a0c03 [2023-11-06 23:07:15,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:15,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:15,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:15,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:15,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:15,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3d7743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15, skipping insertion in model container [2023-11-06 23:07:15,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:15" (1/1) ... [2023-11-06 23:07:15,821 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:16,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:16,638 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:16,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:16,766 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:16,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16 WrapperNode [2023-11-06 23:07:16,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:16,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:16,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:16,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:16,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,836 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2023-11-06 23:07:16,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:16,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:16,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:16,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:16,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:16,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:16,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:16,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:16,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (1/1) ... [2023-11-06 23:07:16,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:16,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:16,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:16,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:07:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 23:07:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 23:07:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 23:07:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 23:07:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:17,014 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 23:07:17,169 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:17,170 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:17,679 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:17,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:17,697 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 23:07:17,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:17 BoogieIcfgContainer [2023-11-06 23:07:17,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:17,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:17,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:17,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:17,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:15" (1/3) ... [2023-11-06 23:07:17,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62510ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:17, skipping insertion in model container [2023-11-06 23:07:17,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:16" (2/3) ... [2023-11-06 23:07:17,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62510ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:17, skipping insertion in model container [2023-11-06 23:07:17,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:17" (3/3) ... [2023-11-06 23:07:17,719 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-06 23:07:17,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:17,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:17,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 23:07:17,743 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:17,919 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 23:07:17,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,269 INFO L124 PetriNetUnfolderBase]: 56/522 cut-off events. [2023-11-06 23:07:18,269 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:07:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 522 events. 56/522 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2193 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 260. Up to 8 conditions per place. [2023-11-06 23:07:18,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:18,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 275 transitions, 570 flow [2023-11-06 23:07:18,460 INFO L124 PetriNetUnfolderBase]: 56/522 cut-off events. [2023-11-06 23:07:18,460 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:07:18,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 522 events. 56/522 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2193 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 260. Up to 8 conditions per place. [2023-11-06 23:07:18,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 24310 [2023-11-06 23:07:29,381 INFO L134 LiptonReduction]: Checked pairs total: 35612 [2023-11-06 23:07:29,381 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-11-06 23:07:29,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:29,408 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;@583093ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:29,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 23:07:29,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:29,413 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 23:07:29,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:29,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:07:29,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:29,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash 34463, now seen corresponding path program 1 times [2023-11-06 23:07:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301923114] [2023-11-06 23:07:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,644 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 23:07:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301923114] [2023-11-06 23:07:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301923114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:29,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956685632] [2023-11-06 23:07:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:29,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 518 [2023-11-06 23:07:29,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 251.0) internal successors, (502), 2 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 518 [2023-11-06 23:07:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:31,128 INFO L124 PetriNetUnfolderBase]: 4605/7831 cut-off events. [2023-11-06 23:07:31,128 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-06 23:07:31,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 7831 events. 4605/7831 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 48360 event pairs, 4306 based on Foata normal form. 453/6277 useless extension candidates. Maximal degree in co-relation 13412. Up to 7231 conditions per place. [2023-11-06 23:07:31,191 INFO L140 encePairwiseOnDemand]: 506/518 looper letters, 61 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-06 23:07:31,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 282 flow [2023-11-06 23:07:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 573 transitions. [2023-11-06 23:07:31,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553088803088803 [2023-11-06 23:07:31,217 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 573 transitions. [2023-11-06 23:07:31,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 573 transitions. [2023-11-06 23:07:31,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:31,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 573 transitions. [2023-11-06 23:07:31,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 286.5) internal successors, (573), 2 states have internal predecessors, (573), 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 23:07:31,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 518.0) internal successors, (1554), 3 states have internal predecessors, (1554), 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 23:07:31,245 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 518.0) internal successors, (1554), 3 states have internal predecessors, (1554), 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 23:07:31,248 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 186 flow. Second operand 2 states and 573 transitions. [2023-11-06 23:07:31,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 282 flow [2023-11-06 23:07:31,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:31,263 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 160 flow [2023-11-06 23:07:31,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-06 23:07:31,270 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-11-06 23:07:31,270 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 160 flow [2023-11-06 23:07:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 251.0) internal successors, (502), 2 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:31,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:07:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:31,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:31,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash 34461, now seen corresponding path program 1 times [2023-11-06 23:07:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012851739] [2023-11-06 23:07:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:31,446 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 23:07:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012851739] [2023-11-06 23:07:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012851739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:31,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861702852] [2023-11-06 23:07:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:31,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:31,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 518 [2023-11-06 23:07:31,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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 23:07:31,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:31,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 518 [2023-11-06 23:07:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:32,820 INFO L124 PetriNetUnfolderBase]: 4605/7832 cut-off events. [2023-11-06 23:07:32,820 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-06 23:07:32,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15156 conditions, 7832 events. 4605/7832 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 48378 event pairs, 4306 based on Foata normal form. 0/5825 useless extension candidates. Maximal degree in co-relation 15151. Up to 7231 conditions per place. [2023-11-06 23:07:32,884 INFO L140 encePairwiseOnDemand]: 514/518 looper letters, 60 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 23:07:32,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 286 flow [2023-11-06 23:07:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 796 transitions. [2023-11-06 23:07:32,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122265122265123 [2023-11-06 23:07:32,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 796 transitions. [2023-11-06 23:07:32,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 796 transitions. [2023-11-06 23:07:32,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:32,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 796 transitions. [2023-11-06 23:07:32,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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 23:07:32,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 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 23:07:32,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 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 23:07:32,945 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 160 flow. Second operand 3 states and 796 transitions. [2023-11-06 23:07:32,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 286 flow [2023-11-06 23:07:32,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:32,952 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 174 flow [2023-11-06 23:07:32,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-11-06 23:07:32,953 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-11-06 23:07:32,953 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 174 flow [2023-11-06 23:07:32,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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 23:07:32,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:32,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:32,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:32,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:32,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1069365, now seen corresponding path program 1 times [2023-11-06 23:07:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967028282] [2023-11-06 23:07:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,131 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 23:07:33,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:33,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967028282] [2023-11-06 23:07:33,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967028282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:33,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312657964] [2023-11-06 23:07:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:33,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:33,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:33,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:33,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:33,379 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 23:07:33,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312657964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 23:07:33,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565811991] [2023-11-06 23:07:33,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:33,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:33,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 518 [2023-11-06 23:07:33,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 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 23:07:33,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:33,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 518 [2023-11-06 23:07:33,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:34,677 INFO L124 PetriNetUnfolderBase]: 4605/7831 cut-off events. [2023-11-06 23:07:34,678 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-06 23:07:34,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 7831 events. 4605/7831 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 48347 event pairs, 4306 based on Foata normal form. 0/5825 useless extension candidates. Maximal degree in co-relation 15154. Up to 7228 conditions per place. [2023-11-06 23:07:34,750 INFO L140 encePairwiseOnDemand]: 514/518 looper letters, 58 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-11-06 23:07:34,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 292 flow [2023-11-06 23:07:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:07:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1038 transitions. [2023-11-06 23:07:34,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500965250965251 [2023-11-06 23:07:34,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1038 transitions. [2023-11-06 23:07:34,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1038 transitions. [2023-11-06 23:07:34,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:34,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1038 transitions. [2023-11-06 23:07:34,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 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 23:07:34,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 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 23:07:34,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 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 23:07:34,787 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 174 flow. Second operand 4 states and 1038 transitions. [2023-11-06 23:07:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 292 flow [2023-11-06 23:07:34,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 288 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:34,797 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 172 flow [2023-11-06 23:07:34,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-11-06 23:07:34,798 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-11-06 23:07:34,799 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 172 flow [2023-11-06 23:07:34,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 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 23:07:34,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:34,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:07:34,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:35,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:35,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:35,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1792213508, now seen corresponding path program 1 times [2023-11-06 23:07:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376200751] [2023-11-06 23:07:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,134 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 23:07:35,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376200751] [2023-11-06 23:07:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376200751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517519406] [2023-11-06 23:07:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:35,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:35,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:35,297 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 23:07:35,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:35,321 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 23:07:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517519406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:35,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:35,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:07:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122750256] [2023-11-06 23:07:35,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:35,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 518 [2023-11-06 23:07:35,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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 23:07:35,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:35,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 518 [2023-11-06 23:07:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:36,728 INFO L124 PetriNetUnfolderBase]: 4605/7834 cut-off events. [2023-11-06 23:07:36,728 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-06 23:07:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15171 conditions, 7834 events. 4605/7834 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 48363 event pairs, 4306 based on Foata normal form. 3/5832 useless extension candidates. Maximal degree in co-relation 15164. Up to 7230 conditions per place. [2023-11-06 23:07:36,777 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 59 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-06 23:07:36,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 312 flow [2023-11-06 23:07:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:07:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1525 transitions. [2023-11-06 23:07:36,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49066924066924067 [2023-11-06 23:07:36,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1525 transitions. [2023-11-06 23:07:36,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1525 transitions. [2023-11-06 23:07:36,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:36,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1525 transitions. [2023-11-06 23:07:36,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 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 23:07:36,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 518.0) internal successors, (3626), 7 states have internal predecessors, (3626), 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 23:07:36,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 518.0) internal successors, (3626), 7 states have internal predecessors, (3626), 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 23:07:36,818 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 172 flow. Second operand 6 states and 1525 transitions. [2023-11-06 23:07:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 312 flow [2023-11-06 23:07:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:36,824 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 204 flow [2023-11-06 23:07:36,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-06 23:07:36,825 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-11-06 23:07:36,826 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 204 flow [2023-11-06 23:07:36,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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 23:07:36,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:36,827 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 23:07:36,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:37,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:37,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -433173092, now seen corresponding path program 2 times [2023-11-06 23:07:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194830867] [2023-11-06 23:07:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:07:37,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:37,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194830867] [2023-11-06 23:07:37,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194830867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:37,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:37,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454716942] [2023-11-06 23:07:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:37,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:37,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 518 [2023-11-06 23:07:37,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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 23:07:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 518 [2023-11-06 23:07:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:38,390 INFO L124 PetriNetUnfolderBase]: 4472/7464 cut-off events. [2023-11-06 23:07:38,391 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-06 23:07:38,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 7464 events. 4472/7464 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 45264 event pairs, 2142 based on Foata normal form. 0/5593 useless extension candidates. Maximal degree in co-relation 14544. Up to 6965 conditions per place. [2023-11-06 23:07:38,448 INFO L140 encePairwiseOnDemand]: 513/518 looper letters, 69 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-06 23:07:38,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 360 flow [2023-11-06 23:07:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 802 transitions. [2023-11-06 23:07:38,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160875160875161 [2023-11-06 23:07:38,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 802 transitions. [2023-11-06 23:07:38,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 802 transitions. [2023-11-06 23:07:38,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:38,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 802 transitions. [2023-11-06 23:07:38,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 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 23:07:38,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 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 23:07:38,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 518.0) internal successors, (2072), 4 states have internal predecessors, (2072), 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 23:07:38,464 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 204 flow. Second operand 3 states and 802 transitions. [2023-11-06 23:07:38,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 360 flow [2023-11-06 23:07:38,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 346 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:38,468 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 194 flow [2023-11-06 23:07:38,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-11-06 23:07:38,469 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-11-06 23:07:38,469 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 194 flow [2023-11-06 23:07:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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 23:07:38,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:38,471 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 23:07:38,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:38,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:38,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:38,472 INFO L85 PathProgramCache]: Analyzing trace with hash 332516332, now seen corresponding path program 1 times [2023-11-06 23:07:38,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:38,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453590399] [2023-11-06 23:07:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:38,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:38,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453590399] [2023-11-06 23:07:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453590399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969598456] [2023-11-06 23:07:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:38,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:38,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:38,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:38,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:38,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:38,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:38,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969598456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:39,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:07:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304043810] [2023-11-06 23:07:39,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:07:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:07:39,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:07:39,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 518 [2023-11-06 23:07:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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 23:07:39,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:39,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 518 [2023-11-06 23:07:39,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:40,637 INFO L124 PetriNetUnfolderBase]: 4472/7512 cut-off events. [2023-11-06 23:07:40,637 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-06 23:07:40,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14643 conditions, 7512 events. 4472/7512 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 45480 event pairs, 4206 based on Foata normal form. 6/5645 useless extension candidates. Maximal degree in co-relation 14631. Up to 6972 conditions per place. [2023-11-06 23:07:40,707 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 57 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-11-06 23:07:40,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 366 flow [2023-11-06 23:07:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:07:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2990 transitions. [2023-11-06 23:07:40,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48101673101673104 [2023-11-06 23:07:40,725 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2990 transitions. [2023-11-06 23:07:40,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2990 transitions. [2023-11-06 23:07:40,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:40,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2990 transitions. [2023-11-06 23:07:40,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 249.16666666666666) internal successors, (2990), 12 states have internal predecessors, (2990), 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 23:07:40,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 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 23:07:40,762 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 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 23:07:40,762 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 194 flow. Second operand 12 states and 2990 transitions. [2023-11-06 23:07:40,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 366 flow [2023-11-06 23:07:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 77 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:40,767 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 274 flow [2023-11-06 23:07:40,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=274, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2023-11-06 23:07:40,769 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 24 predicate places. [2023-11-06 23:07:40,769 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 274 flow [2023-11-06 23:07:40,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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 23:07:40,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:40,771 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 23:07:40,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:40,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:40,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2108699372, now seen corresponding path program 2 times [2023-11-06 23:07:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:40,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624654299] [2023-11-06 23:07:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624654299] [2023-11-06 23:07:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624654299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325968558] [2023-11-06 23:07:41,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:41,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:41,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:07:42,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:42,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:42,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:07:42,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:42,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325968558] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:42,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 23:07:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307258525] [2023-11-06 23:07:42,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:42,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 23:07:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 23:07:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 23:07:42,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 518 [2023-11-06 23:07:42,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 274 flow. Second operand has 25 states, 25 states have (on average 244.16) internal successors, (6104), 25 states have internal predecessors, (6104), 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 23:07:42,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:42,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 518 [2023-11-06 23:07:42,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:44,010 INFO L124 PetriNetUnfolderBase]: 4472/7515 cut-off events. [2023-11-06 23:07:44,011 INFO L125 PetriNetUnfolderBase]: For 862/862 co-relation queries the response was YES. [2023-11-06 23:07:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14714 conditions, 7515 events. 4472/7515 cut-off events. For 862/862 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 45376 event pairs, 4206 based on Foata normal form. 12/5654 useless extension candidates. Maximal degree in co-relation 14696. Up to 6972 conditions per place. [2023-11-06 23:07:44,066 INFO L140 encePairwiseOnDemand]: 515/518 looper letters, 57 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-11-06 23:07:44,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 89 transitions, 530 flow [2023-11-06 23:07:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:07:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 23:07:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5924 transitions. [2023-11-06 23:07:44,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765122265122265 [2023-11-06 23:07:44,088 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5924 transitions. [2023-11-06 23:07:44,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5924 transitions. [2023-11-06 23:07:44,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:44,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5924 transitions. [2023-11-06 23:07:44,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.83333333333334) internal successors, (5924), 24 states have internal predecessors, (5924), 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 23:07:44,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 518.0) internal successors, (12950), 25 states have internal predecessors, (12950), 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 23:07:44,158 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 518.0) internal successors, (12950), 25 states have internal predecessors, (12950), 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 23:07:44,159 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 274 flow. Second operand 24 states and 5924 transitions. [2023-11-06 23:07:44,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 89 transitions, 530 flow [2023-11-06 23:07:44,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 89 transitions, 458 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:44,165 INFO L231 Difference]: Finished difference. Result has 124 places, 89 transitions, 394 flow [2023-11-06 23:07:44,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=394, PETRI_PLACES=124, PETRI_TRANSITIONS=89} [2023-11-06 23:07:44,167 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 54 predicate places. [2023-11-06 23:07:44,167 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 89 transitions, 394 flow [2023-11-06 23:07:44,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 244.16) internal successors, (6104), 25 states have internal predecessors, (6104), 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 23:07:44,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:44,169 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-11-06 23:07:44,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:44,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:44,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 23:07:44,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1868644588, now seen corresponding path program 3 times [2023-11-06 23:07:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:44,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288497386] [2023-11-06 23:07:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:45,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:45,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288497386] [2023-11-06 23:07:45,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288497386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:45,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111178863] [2023-11-06 23:07:45,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:07:45,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:45,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:45,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:45,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cd6348-fa06-4583-be27-d48be7e7e6fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process