./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:24:07,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:24:07,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:24:07,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:24:07,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:24:07,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:24:07,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:24:07,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:24:07,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:24:07,491 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:24:07,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:24:07,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:24:07,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:24:07,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:24:07,494 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:24:07,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:24:07,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:24:07,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:24:07,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:24:07,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:24:07,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:24:07,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:24:07,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:24:07,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:24:07,499 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:24:07,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:24:07,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:24:07,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:24:07,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:24:07,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:24:07,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:24:07,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:24:07,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:24:07,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:07,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:24:07,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:24:07,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:24:07,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:24:07,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:24:07,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:24:07,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:24:07,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:24:07,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:24:07,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:24:07,504 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_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2023-11-28 20:24:07,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:24:07,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:24:07,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:24:07,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:24:07,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:24:07,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2023-11-28 20:24:10,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:24:11,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:24:11,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2023-11-28 20:24:11,028 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/data/b83ad22bb/7bac7857e54447449637dbd000e81c83/FLAG7eea61791 [2023-11-28 20:24:11,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/data/b83ad22bb/7bac7857e54447449637dbd000e81c83 [2023-11-28 20:24:11,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:24:11,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:24:11,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:11,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:24:11,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:24:11,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75105c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11, skipping insertion in model container [2023-11-28 20:24:11,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:24:11,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:11,660 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:24:11,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:11,792 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:24:11,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11 WrapperNode [2023-11-28 20:24:11,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:11,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:11,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:24:11,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:24:11,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,855 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 106 [2023-11-28 20:24:11,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:11,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:24:11,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:24:11,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:24:11,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,896 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-28 20:24:11,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:24:11,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:24:11,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:24:11,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:24:11,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (1/1) ... [2023-11-28 20:24:11,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:11,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:24:11,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:24:12,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:24:12,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:24:12,005 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:24:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:24:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:24:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:24:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:24:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-28 20:24:12,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-28 20:24:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:24:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:24:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:24:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:24:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:24:12,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:24:12,010 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:24:12,206 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:24:12,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:24:12,489 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:24:12,670 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:24:12,670 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-28 20:24:12,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:12 BoogieIcfgContainer [2023-11-28 20:24:12,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:24:12,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:24:12,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:24:12,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:24:12,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:11" (1/3) ... [2023-11-28 20:24:12,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b805b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:12, skipping insertion in model container [2023-11-28 20:24:12,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:11" (2/3) ... [2023-11-28 20:24:12,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b805b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:12, skipping insertion in model container [2023-11-28 20:24:12,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:12" (3/3) ... [2023-11-28 20:24:12,682 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-11-28 20:24:12,693 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:24:12,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:24:12,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-28 20:24:12,706 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:24:12,749 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-28 20:24:12,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 73 transitions, 153 flow [2023-11-28 20:24:12,836 INFO L124 PetriNetUnfolderBase]: 17/101 cut-off events. [2023-11-28 20:24:12,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 20:24:12,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 17/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-11-28 20:24:12,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 73 transitions, 153 flow [2023-11-28 20:24:12,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 72 transitions, 151 flow [2023-11-28 20:24:12,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:24:12,861 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d0e9919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:24:12,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-28 20:24:12,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:24:12,867 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-28 20:24:12,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:24:12,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:12,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:24:12,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-28 20:24:12,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 382932170, now seen corresponding path program 1 times [2023-11-28 20:24:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804157632] [2023-11-28 20:24:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804157632] [2023-11-28 20:24:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804157632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:13,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049644028] [2023-11-28 20:24:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:13,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-28 20:24:13,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2023-11-28 20:24:13,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:13,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-28 20:24:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:13,461 INFO L124 PetriNetUnfolderBase]: 157/514 cut-off events. [2023-11-28 20:24:13,461 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 20:24:13,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 514 events. 157/514 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2873 event pairs, 0 based on Foata normal form. 72/499 useless extension candidates. Maximal degree in co-relation 758. Up to 233 conditions per place. [2023-11-28 20:24:13,470 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 46 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-28 20:24:13,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 275 flow [2023-11-28 20:24:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:24:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:24:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2023-11-28 20:24:13,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7397260273972602 [2023-11-28 20:24:13,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 216 transitions. [2023-11-28 20:24:13,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 216 transitions. [2023-11-28 20:24:13,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:13,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 216 transitions. [2023-11-28 20:24:13,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2023-11-28 20:24:13,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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) [2023-11-28 20:24:13,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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) [2023-11-28 20:24:13,504 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 151 flow. Second operand 4 states and 216 transitions. [2023-11-28 20:24:13,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 275 flow [2023-11-28 20:24:13,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:24:13,513 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 141 flow [2023-11-28 20:24:13,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-11-28 20:24:13,520 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2023-11-28 20:24:13,520 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 141 flow [2023-11-28 20:24:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2023-11-28 20:24:13,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:13,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:24:13,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-28 20:24:13,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 499547323, now seen corresponding path program 1 times [2023-11-28 20:24:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:13,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371788973] [2023-11-28 20:24:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:13,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:24:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:13,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:24:13,608 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 20:24:13,611 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-28 20:24:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-28 20:24:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-28 20:24:13,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-28 20:24:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-28 20:24:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-28 20:24:13,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-28 20:24:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-28 20:24:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-28 20:24:13,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-28 20:24:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-28 20:24:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-28 20:24:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-28 20:24:13,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-28 20:24:13,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-28 20:24:13,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:24:13,617 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-28 20:24:13,621 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 20:24:13,621 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-28 20:24:13,653 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:24:13,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 106 transitions, 228 flow [2023-11-28 20:24:13,685 INFO L124 PetriNetUnfolderBase]: 30/181 cut-off events. [2023-11-28 20:24:13,685 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-28 20:24:13,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 181 events. 30/181 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 731 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place. [2023-11-28 20:24:13,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 106 transitions, 228 flow [2023-11-28 20:24:13,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 106 transitions, 228 flow [2023-11-28 20:24:13,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:24:13,694 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d0e9919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:24:13,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-28 20:24:13,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:24:13,698 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-28 20:24:13,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:24:13,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:13,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:24:13,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:13,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 484118291, now seen corresponding path program 1 times [2023-11-28 20:24:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321042262] [2023-11-28 20:24:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:13,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321042262] [2023-11-28 20:24:13,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321042262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:13,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:13,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774767380] [2023-11-28 20:24:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:13,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2023-11-28 20:24:13,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2023-11-28 20:24:13,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:13,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2023-11-28 20:24:13,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:15,225 INFO L124 PetriNetUnfolderBase]: 4243/9296 cut-off events. [2023-11-28 20:24:15,225 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-11-28 20:24:15,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15714 conditions, 9296 events. 4243/9296 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 83069 event pairs, 1771 based on Foata normal form. 1575/9492 useless extension candidates. Maximal degree in co-relation 1244. Up to 6314 conditions per place. [2023-11-28 20:24:15,319 INFO L140 encePairwiseOnDemand]: 86/106 looper letters, 64 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-11-28 20:24:15,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 384 flow [2023-11-28 20:24:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:24:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:24:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2023-11-28 20:24:15,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2023-11-28 20:24:15,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 296 transitions. [2023-11-28 20:24:15,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 296 transitions. [2023-11-28 20:24:15,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:15,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 296 transitions. [2023-11-28 20:24:15,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2023-11-28 20:24:15,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-11-28 20:24:15,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-11-28 20:24:15,330 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 228 flow. Second operand 4 states and 296 transitions. [2023-11-28 20:24:15,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 384 flow [2023-11-28 20:24:15,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:24:15,336 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 224 flow [2023-11-28 20:24:15,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2023-11-28 20:24:15,337 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2023-11-28 20:24:15,337 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 224 flow [2023-11-28 20:24:15,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2023-11-28 20:24:15,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:15,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:15,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:24:15,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:15,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1791382000, now seen corresponding path program 1 times [2023-11-28 20:24:15,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:15,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158589974] [2023-11-28 20:24:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158589974] [2023-11-28 20:24:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158589974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150454342] [2023-11-28 20:24:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:15,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:15,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2023-11-28 20:24:15,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2023-11-28 20:24:15,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:15,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2023-11-28 20:24:15,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:16,965 INFO L124 PetriNetUnfolderBase]: 5752/12177 cut-off events. [2023-11-28 20:24:16,966 INFO L125 PetriNetUnfolderBase]: For 648/957 co-relation queries the response was YES. [2023-11-28 20:24:16,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21618 conditions, 12177 events. 5752/12177 cut-off events. For 648/957 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 110936 event pairs, 1436 based on Foata normal form. 204/11016 useless extension candidates. Maximal degree in co-relation 18480. Up to 5831 conditions per place. [2023-11-28 20:24:17,057 INFO L140 encePairwiseOnDemand]: 97/106 looper letters, 125 selfloop transitions, 12 changer transitions 0/187 dead transitions. [2023-11-28 20:24:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 187 transitions, 738 flow [2023-11-28 20:24:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-11-28 20:24:17,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2023-11-28 20:24:17,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-11-28 20:24:17,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-11-28 20:24:17,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:17,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-11-28 20:24:17,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-28 20:24:17,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2023-11-28 20:24:17,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2023-11-28 20:24:17,067 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 224 flow. Second operand 5 states and 385 transitions. [2023-11-28 20:24:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 187 transitions, 738 flow [2023-11-28 20:24:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 187 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:24:17,074 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 316 flow [2023-11-28 20:24:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2023-11-28 20:24:17,076 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2023-11-28 20:24:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 316 flow [2023-11-28 20:24:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2023-11-28 20:24:17,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:17,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:24:17,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:17,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1969718740, now seen corresponding path program 1 times [2023-11-28 20:24:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:17,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250213129] [2023-11-28 20:24:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:17,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250213129] [2023-11-28 20:24:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250213129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004062315] [2023-11-28 20:24:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:17,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:17,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:17,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:17,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:24:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:17,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:24:17,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:17,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004062315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:17,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:17,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:24:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863234250] [2023-11-28 20:24:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:24:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:24:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:24:17,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2023-11-28 20:24:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2023-11-28 20:24:17,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2023-11-28 20:24:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:19,048 INFO L124 PetriNetUnfolderBase]: 5767/13376 cut-off events. [2023-11-28 20:24:19,049 INFO L125 PetriNetUnfolderBase]: For 3623/3630 co-relation queries the response was YES. [2023-11-28 20:24:19,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25140 conditions, 13376 events. 5767/13376 cut-off events. For 3623/3630 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 126478 event pairs, 545 based on Foata normal form. 152/11626 useless extension candidates. Maximal degree in co-relation 21838. Up to 6311 conditions per place. [2023-11-28 20:24:19,132 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 125 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2023-11-28 20:24:19,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 181 transitions, 812 flow [2023-11-28 20:24:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:24:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:24:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 411 transitions. [2023-11-28 20:24:19,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2023-11-28 20:24:19,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 411 transitions. [2023-11-28 20:24:19,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 411 transitions. [2023-11-28 20:24:19,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:19,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 411 transitions. [2023-11-28 20:24:19,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 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) [2023-11-28 20:24:19,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 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) [2023-11-28 20:24:19,146 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 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) [2023-11-28 20:24:19,146 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 316 flow. Second operand 6 states and 411 transitions. [2023-11-28 20:24:19,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 181 transitions, 812 flow [2023-11-28 20:24:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 181 transitions, 812 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:24:19,158 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 324 flow [2023-11-28 20:24:19,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-11-28 20:24:19,159 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2023-11-28 20:24:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 324 flow [2023-11-28 20:24:19,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2023-11-28 20:24:19,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:19,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:24:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:19,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:19,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1969771173, now seen corresponding path program 1 times [2023-11-28 20:24:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593028762] [2023-11-28 20:24:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593028762] [2023-11-28 20:24:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593028762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848761495] [2023-11-28 20:24:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:19,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:19,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:19,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:24:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:24:19,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:24:19,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848761495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-28 20:24:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825344330] [2023-11-28 20:24:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:24:19,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 106 [2023-11-28 20:24:19,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-28 20:24:19,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:19,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 106 [2023-11-28 20:24:19,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:20,949 INFO L124 PetriNetUnfolderBase]: 6269/13555 cut-off events. [2023-11-28 20:24:20,949 INFO L125 PetriNetUnfolderBase]: For 5585/5783 co-relation queries the response was YES. [2023-11-28 20:24:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 13555 events. 6269/13555 cut-off events. For 5585/5783 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 124999 event pairs, 4988 based on Foata normal form. 170/12699 useless extension candidates. Maximal degree in co-relation 23773. Up to 8893 conditions per place. [2023-11-28 20:24:21,027 INFO L140 encePairwiseOnDemand]: 103/106 looper letters, 86 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-28 20:24:21,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 608 flow [2023-11-28 20:24:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-28 20:24:21,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2023-11-28 20:24:21,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-28 20:24:21,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-28 20:24:21,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:21,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-28 20:24:21,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-11-28 20:24:21,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2023-11-28 20:24:21,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2023-11-28 20:24:21,034 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 324 flow. Second operand 3 states and 208 transitions. [2023-11-28 20:24:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 608 flow [2023-11-28 20:24:21,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 134 transitions, 596 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-28 20:24:21,048 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 314 flow [2023-11-28 20:24:21,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-11-28 20:24:21,050 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 13 predicate places. [2023-11-28 20:24:21,050 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 314 flow [2023-11-28 20:24:21,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-28 20:24:21,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:21,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:24:21,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:24:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 20:24:21,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:21,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash -931738277, now seen corresponding path program 1 times [2023-11-28 20:24:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484408311] [2023-11-28 20:24:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:24:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484408311] [2023-11-28 20:24:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484408311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052807342] [2023-11-28 20:24:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2023-11-28 20:24:21,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2023-11-28 20:24:21,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:21,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2023-11-28 20:24:21,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:22,727 INFO L124 PetriNetUnfolderBase]: 5260/11850 cut-off events. [2023-11-28 20:24:22,727 INFO L125 PetriNetUnfolderBase]: For 4315/4324 co-relation queries the response was YES. [2023-11-28 20:24:22,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23189 conditions, 11850 events. 5260/11850 cut-off events. For 4315/4324 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 108941 event pairs, 1377 based on Foata normal form. 154/10864 useless extension candidates. Maximal degree in co-relation 20353. Up to 6638 conditions per place. [2023-11-28 20:24:22,797 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 102 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2023-11-28 20:24:22,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 700 flow [2023-11-28 20:24:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:24:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:24:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-11-28 20:24:22,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6745283018867925 [2023-11-28 20:24:22,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-11-28 20:24:22,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-11-28 20:24:22,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:22,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-11-28 20:24:22,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-11-28 20:24:22,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-11-28 20:24:22,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-11-28 20:24:22,802 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 314 flow. Second operand 4 states and 286 transitions. [2023-11-28 20:24:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 700 flow [2023-11-28 20:24:22,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 157 transitions, 692 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 20:24:22,832 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 322 flow [2023-11-28 20:24:22,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-11-28 20:24:22,833 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 13 predicate places. [2023-11-28 20:24:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 322 flow [2023-11-28 20:24:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2023-11-28 20:24:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:24:22,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:22,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash -933363671, now seen corresponding path program 1 times [2023-11-28 20:24:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915241311] [2023-11-28 20:24:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:22,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915241311] [2023-11-28 20:24:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915241311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217234222] [2023-11-28 20:24:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:22,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:22,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:24:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:23,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:24:23,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:24:23,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217234222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-28 20:24:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229959272] [2023-11-28 20:24:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:23,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:24:23,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 106 [2023-11-28 20:24:23,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-28 20:24:23,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:23,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 106 [2023-11-28 20:24:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:24,960 INFO L124 PetriNetUnfolderBase]: 9992/21319 cut-off events. [2023-11-28 20:24:24,960 INFO L125 PetriNetUnfolderBase]: For 7312/7351 co-relation queries the response was YES. [2023-11-28 20:24:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42113 conditions, 21319 events. 9992/21319 cut-off events. For 7312/7351 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 205435 event pairs, 4678 based on Foata normal form. 177/19960 useless extension candidates. Maximal degree in co-relation 33794. Up to 8404 conditions per place. [2023-11-28 20:24:25,049 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 99 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2023-11-28 20:24:25,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 148 transitions, 684 flow [2023-11-28 20:24:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:24:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-11-28 20:24:25,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2023-11-28 20:24:25,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-11-28 20:24:25,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-11-28 20:24:25,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:25,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-11-28 20:24:25,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2023-11-28 20:24:25,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2023-11-28 20:24:25,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2023-11-28 20:24:25,054 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 322 flow. Second operand 3 states and 220 transitions. [2023-11-28 20:24:25,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 148 transitions, 684 flow [2023-11-28 20:24:25,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 148 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:24:25,161 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 344 flow [2023-11-28 20:24:25,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2023-11-28 20:24:25,162 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 15 predicate places. [2023-11-28 20:24:25,162 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 344 flow [2023-11-28 20:24:25,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-11-28 20:24:25,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:25,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 20:24:25,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:24:25,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 20:24:25,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-28 20:24:25,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2047271070, now seen corresponding path program 1 times [2023-11-28 20:24:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:25,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877418642] [2023-11-28 20:24:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:25,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 20:24:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 20:24:25,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 20:24:25,409 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 20:24:25,409 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-28 20:24:25,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-28 20:24:25,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-28 20:24:25,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-28 20:24:25,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-28 20:24:25,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-28 20:24:25,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-28 20:24:25,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-28 20:24:25,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-28 20:24:25,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-28 20:24:25,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-28 20:24:25,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-28 20:24:25,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-28 20:24:25,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-28 20:24:25,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-28 20:24:25,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-28 20:24:25,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-28 20:24:25,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-28 20:24:25,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-28 20:24:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:24:25,414 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:25,415 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 20:24:25,415 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-28 20:24:25,451 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 20:24:25,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 139 transitions, 305 flow [2023-11-28 20:24:25,492 INFO L124 PetriNetUnfolderBase]: 46/280 cut-off events. [2023-11-28 20:24:25,493 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-28 20:24:25,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 280 events. 46/280 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1223 event pairs, 1 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 196. Up to 12 conditions per place. [2023-11-28 20:24:25,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 139 transitions, 305 flow [2023-11-28 20:24:25,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 139 transitions, 305 flow [2023-11-28 20:24:25,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:24:25,501 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d0e9919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:24:25,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-28 20:24:25,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:24:25,505 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-11-28 20:24:25,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:24:25,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:25,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:24:25,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:24:25,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash 616796477, now seen corresponding path program 1 times [2023-11-28 20:24:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889629571] [2023-11-28 20:24:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889629571] [2023-11-28 20:24:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889629571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:25,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392509053] [2023-11-28 20:24:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:25,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2023-11-28 20:24:25,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 139 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2023-11-28 20:24:25,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:25,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2023-11-28 20:24:25,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:37,561 INFO L124 PetriNetUnfolderBase]: 76920/135844 cut-off events. [2023-11-28 20:24:37,561 INFO L125 PetriNetUnfolderBase]: For 1635/1635 co-relation queries the response was YES. [2023-11-28 20:24:37,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241962 conditions, 135844 events. 76920/135844 cut-off events. For 1635/1635 co-relation queries the response was YES. Maximal size of possible extension queue 4224. Compared 1436698 event pairs, 60687 based on Foata normal form. 27890/148455 useless extension candidates. Maximal degree in co-relation 92727. Up to 104956 conditions per place. [2023-11-28 20:24:38,501 INFO L140 encePairwiseOnDemand]: 113/139 looper letters, 77 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2023-11-28 20:24:38,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 475 flow [2023-11-28 20:24:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:24:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:24:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-11-28 20:24:38,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6672661870503597 [2023-11-28 20:24:38,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-11-28 20:24:38,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-11-28 20:24:38,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:38,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-11-28 20:24:38,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2023-11-28 20:24:38,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-11-28 20:24:38,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-11-28 20:24:38,509 INFO L175 Difference]: Start difference. First operand has 120 places, 139 transitions, 305 flow. Second operand 4 states and 371 transitions. [2023-11-28 20:24:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 475 flow [2023-11-28 20:24:38,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:24:38,516 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 289 flow [2023-11-28 20:24:38,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-11-28 20:24:38,517 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 5 predicate places. [2023-11-28 20:24:38,517 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 289 flow [2023-11-28 20:24:38,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2023-11-28 20:24:38,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:38,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:24:38,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:24:38,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1594120977, now seen corresponding path program 1 times [2023-11-28 20:24:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501494247] [2023-11-28 20:24:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501494247] [2023-11-28 20:24:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501494247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:38,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:24:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784407255] [2023-11-28 20:24:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:24:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:24:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:24:38,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2023-11-28 20:24:38,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-11-28 20:24:38,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:38,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2023-11-28 20:24:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:24:57,733 INFO L124 PetriNetUnfolderBase]: 115141/201730 cut-off events. [2023-11-28 20:24:57,733 INFO L125 PetriNetUnfolderBase]: For 9445/13888 co-relation queries the response was YES. [2023-11-28 20:24:58,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366826 conditions, 201730 events. 115141/201730 cut-off events. For 9445/13888 co-relation queries the response was YES. Maximal size of possible extension queue 6008. Compared 2202861 event pairs, 37979 based on Foata normal form. 2772/184910 useless extension candidates. Maximal degree in co-relation 317781. Up to 107420 conditions per place. [2023-11-28 20:24:59,119 INFO L140 encePairwiseOnDemand]: 128/139 looper letters, 177 selfloop transitions, 16 changer transitions 0/257 dead transitions. [2023-11-28 20:24:59,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 257 transitions, 1031 flow [2023-11-28 20:24:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:24:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:24:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 511 transitions. [2023-11-28 20:24:59,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352517985611511 [2023-11-28 20:24:59,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 511 transitions. [2023-11-28 20:24:59,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 511 transitions. [2023-11-28 20:24:59,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:24:59,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 511 transitions. [2023-11-28 20:24:59,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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) [2023-11-28 20:24:59,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-11-28 20:24:59,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-11-28 20:24:59,129 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 289 flow. Second operand 5 states and 511 transitions. [2023-11-28 20:24:59,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 257 transitions, 1031 flow [2023-11-28 20:24:59,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 257 transitions, 1027 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:24:59,152 INFO L231 Difference]: Finished difference. Result has 132 places, 136 transitions, 415 flow [2023-11-28 20:24:59,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=132, PETRI_TRANSITIONS=136} [2023-11-28 20:24:59,153 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2023-11-28 20:24:59,153 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 136 transitions, 415 flow [2023-11-28 20:24:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-11-28 20:24:59,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:24:59,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:24:59,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:24:59,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1497711724, now seen corresponding path program 1 times [2023-11-28 20:24:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564256822] [2023-11-28 20:24:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564256822] [2023-11-28 20:24:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564256822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102235100] [2023-11-28 20:24:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:59,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:59,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:24:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:59,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:24:59,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:59,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:24:59,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102235100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:59,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:59,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:24:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342062013] [2023-11-28 20:24:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:24:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:24:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:24:59,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2023-11-28 20:24:59,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 136 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 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) [2023-11-28 20:24:59,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:24:59,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2023-11-28 20:24:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:19,318 INFO L124 PetriNetUnfolderBase]: 116709/218082 cut-off events. [2023-11-28 20:25:19,319 INFO L125 PetriNetUnfolderBase]: For 71663/71714 co-relation queries the response was YES. [2023-11-28 20:25:19,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433228 conditions, 218082 events. 116709/218082 cut-off events. For 71663/71714 co-relation queries the response was YES. Maximal size of possible extension queue 4897. Compared 2496120 event pairs, 16195 based on Foata normal form. 2208/192772 useless extension candidates. Maximal degree in co-relation 356980. Up to 116001 conditions per place. [2023-11-28 20:25:20,792 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 168 selfloop transitions, 6 changer transitions 0/238 dead transitions. [2023-11-28 20:25:20,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 238 transitions, 1085 flow [2023-11-28 20:25:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:25:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2023-11-28 20:25:20,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354916067146283 [2023-11-28 20:25:20,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2023-11-28 20:25:20,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2023-11-28 20:25:20,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:20,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2023-11-28 20:25:20,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 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) [2023-11-28 20:25:20,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-11-28 20:25:20,799 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-11-28 20:25:20,799 INFO L175 Difference]: Start difference. First operand has 132 places, 136 transitions, 415 flow. Second operand 6 states and 530 transitions. [2023-11-28 20:25:20,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 238 transitions, 1085 flow [2023-11-28 20:25:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 238 transitions, 1085 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:25:20,850 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 423 flow [2023-11-28 20:25:20,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2023-11-28 20:25:20,851 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 16 predicate places. [2023-11-28 20:25:20,851 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 423 flow [2023-11-28 20:25:20,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 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) [2023-11-28 20:25:20,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:20,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:20,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:25:21,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 20:25:21,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:25:21,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1497629500, now seen corresponding path program 1 times [2023-11-28 20:25:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:21,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091223735] [2023-11-28 20:25:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:21,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091223735] [2023-11-28 20:25:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091223735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:21,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320163238] [2023-11-28 20:25:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:21,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:21,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:21,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:25:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:21,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:21,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:25:21,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320163238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:21,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-28 20:25:21,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589979607] [2023-11-28 20:25:21,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:21,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:21,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:21,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2023-11-28 20:25:21,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-28 20:25:21,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:21,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2023-11-28 20:25:21,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:42,786 INFO L124 PetriNetUnfolderBase]: 127475/227552 cut-off events. [2023-11-28 20:25:42,786 INFO L125 PetriNetUnfolderBase]: For 100698/103205 co-relation queries the response was YES. [2023-11-28 20:25:43,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480872 conditions, 227552 events. 127475/227552 cut-off events. For 100698/103205 co-relation queries the response was YES. Maximal size of possible extension queue 5415. Compared 2514727 event pairs, 102092 based on Foata normal form. 2226/213002 useless extension candidates. Maximal degree in co-relation 396122. Up to 159224 conditions per place. [2023-11-28 20:25:44,605 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 118 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2023-11-28 20:25:44,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 180 transitions, 827 flow [2023-11-28 20:25:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:25:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-11-28 20:25:44,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.657074340527578 [2023-11-28 20:25:44,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-11-28 20:25:44,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-11-28 20:25:44,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:44,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-11-28 20:25:44,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-28 20:25:44,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-28 20:25:44,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-11-28 20:25:44,612 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 423 flow. Second operand 3 states and 274 transitions. [2023-11-28 20:25:44,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 180 transitions, 827 flow [2023-11-28 20:25:44,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 180 transitions, 815 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-28 20:25:44,789 INFO L231 Difference]: Finished difference. Result has 133 places, 134 transitions, 413 flow [2023-11-28 20:25:44,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2023-11-28 20:25:44,790 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 13 predicate places. [2023-11-28 20:25:44,790 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 413 flow [2023-11-28 20:25:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-28 20:25:44,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:44,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:25:44,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:25:44,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 20:25:44,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:25:44,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash -815576154, now seen corresponding path program 1 times [2023-11-28 20:25:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:44,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366499749] [2023-11-28 20:25:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:25:45,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:45,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366499749] [2023-11-28 20:25:45,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366499749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:45,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:45,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:45,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80890533] [2023-11-28 20:25:45,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:45,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:45,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:45,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:45,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2023-11-28 20:25:45,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2023-11-28 20:25:45,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:45,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2023-11-28 20:25:45,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:03,305 INFO L124 PetriNetUnfolderBase]: 111140/206358 cut-off events. [2023-11-28 20:26:03,305 INFO L125 PetriNetUnfolderBase]: For 78626/78658 co-relation queries the response was YES. [2023-11-28 20:26:03,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415270 conditions, 206358 events. 111140/206358 cut-off events. For 78626/78658 co-relation queries the response was YES. Maximal size of possible extension queue 4685. Compared 2333017 event pairs, 11999 based on Foata normal form. 2208/192178 useless extension candidates. Maximal degree in co-relation 365812. Up to 124083 conditions per place. [2023-11-28 20:26:04,584 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 145 selfloop transitions, 6 changer transitions 0/214 dead transitions. [2023-11-28 20:26:04,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 214 transitions, 973 flow [2023-11-28 20:26:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:26:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:26:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-28 20:26:04,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6780575539568345 [2023-11-28 20:26:04,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-28 20:26:04,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-28 20:26:04,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:04,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-28 20:26:04,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:04,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-11-28 20:26:04,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-11-28 20:26:04,590 INFO L175 Difference]: Start difference. First operand has 133 places, 134 transitions, 413 flow. Second operand 4 states and 377 transitions. [2023-11-28 20:26:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 214 transitions, 973 flow [2023-11-28 20:26:14,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 214 transitions, 965 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 20:26:14,728 INFO L231 Difference]: Finished difference. Result has 133 places, 134 transitions, 421 flow [2023-11-28 20:26:14,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2023-11-28 20:26:14,729 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 13 predicate places. [2023-11-28 20:26:14,729 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 421 flow [2023-11-28 20:26:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2023-11-28 20:26:14,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:14,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:14,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:26:14,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-28 20:26:14,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash -818125069, now seen corresponding path program 1 times [2023-11-28 20:26:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403532841] [2023-11-28 20:26:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403532841] [2023-11-28 20:26:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403532841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692922635] [2023-11-28 20:26:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:14,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:14,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:14,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e4643f-3c4c-4708-9432-e9b6bd009c06/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:26:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:14,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:26:14,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:26:14,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692922635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:14,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:14,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-28 20:26:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861844018] [2023-11-28 20:26:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:14,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:26:14,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:26:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:26:14,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2023-11-28 20:26:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-28 20:26:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2023-11-28 20:26:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand