./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --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_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/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_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/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_d10c7fd7-e99f-488a-861a-f559cf656ace/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:58:29,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:58:29,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:58:29,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:58:29,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:58:29,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:58:29,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:58:29,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:58:29,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:58:29,884 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:58:29,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:58:29,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:58:29,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:58:29,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:58:29,888 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:58:29,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:58:29,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:58:29,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:58:29,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:58:29,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:58:29,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:58:29,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:58:29,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:58:29,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:58:29,893 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:58:29,894 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:58:29,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:58:29,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:58:29,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:58:29,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:58:29,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:58:29,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:58:29,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:58:29,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:58:29,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:58:29,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:58:29,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:58:29,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:58:29,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:58:29,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:58:29,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:58:29,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:58:29,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:58:29,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:58:29,900 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_d10c7fd7-e99f-488a-861a-f559cf656ace/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-29 05:58:30,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:58:30,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:58:30,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:58:30,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:58:30,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:58:30,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-29 05:58:32,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:58:33,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:58:33,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-29 05:58:33,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/data/a3a3171a6/2443c1afea2d466fa6d9b411b15cfb73/FLAG80534f23b [2023-11-29 05:58:33,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/data/a3a3171a6/2443c1afea2d466fa6d9b411b15cfb73 [2023-11-29 05:58:33,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:58:33,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:58:33,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:58:33,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:58:33,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:58:33,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422e2c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33, skipping insertion in model container [2023-11-29 05:58:33,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:58:33,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:58:33,271 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:58:33,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:58:33,311 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:58:33,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33 WrapperNode [2023-11-29 05:58:33,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:58:33,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:58:33,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:58:33,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:58:33,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,357 INFO L138 Inliner]: procedures = 25, calls = 47, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 213 [2023-11-29 05:58:33,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:58:33,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:58:33,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:58:33,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:58:33,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,395 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 15, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 7, 1]. [2023-11-29 05:58:33,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:58:33,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:58:33,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:58:33,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:58:33,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (1/1) ... [2023-11-29 05:58:33,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:58:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:33,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:58:33,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:58:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:58:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:58:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:58:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:58:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:58:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:58:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:58:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:58:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:58:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:58:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:58:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:58:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:58:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:58:33,494 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:58:33,603 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:58:33,605 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:58:34,007 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:58:34,375 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:58:34,375 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-29 05:58:34,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:58:34 BoogieIcfgContainer [2023-11-29 05:58:34,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:58:34,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:58:34,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:58:34,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:58:34,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:58:33" (1/3) ... [2023-11-29 05:58:34,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7089d9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:58:34, skipping insertion in model container [2023-11-29 05:58:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:58:33" (2/3) ... [2023-11-29 05:58:34,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7089d9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:58:34, skipping insertion in model container [2023-11-29 05:58:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:58:34" (3/3) ... [2023-11-29 05:58:34,386 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-29 05:58:34,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:58:34,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:58:34,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 05:58:34,408 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:58:34,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:58:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 143 flow [2023-11-29 05:58:34,533 INFO L124 PetriNetUnfolderBase]: 7/58 cut-off events. [2023-11-29 05:58:34,533 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:58:34,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 7/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-29 05:58:34,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 143 flow [2023-11-29 05:58:34,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 56 transitions, 127 flow [2023-11-29 05:58:34,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:58:34,560 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;@10745c5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:58:34,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 05:58:34,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:58:34,565 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 05:58:34,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:58:34,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:34,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:58:34,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:34,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash 771824, now seen corresponding path program 1 times [2023-11-29 05:58:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:34,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546628083] [2023-11-29 05:58:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546628083] [2023-11-29 05:58:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546628083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:58:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300670831] [2023-11-29 05:58:34,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:34,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:34,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-29 05:58:34,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:34,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:34,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:35,235 INFO L124 PetriNetUnfolderBase]: 469/823 cut-off events. [2023-11-29 05:58:35,235 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-29 05:58:35,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 823 events. 469/823 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3585 event pairs, 333 based on Foata normal form. 4/638 useless extension candidates. Maximal degree in co-relation 1289. Up to 675 conditions per place. [2023-11-29 05:58:35,248 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 29 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-29 05:58:35,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 197 flow [2023-11-29 05:58:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:58:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:58:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-29 05:58:35,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385245901639344 [2023-11-29 05:58:35,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-29 05:58:35,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-29 05:58:35,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:35,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-29 05:58:35,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2023-11-29 05:58:35,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:35,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:35,276 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 127 flow. Second operand 4 states and 107 transitions. [2023-11-29 05:58:35,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 197 flow [2023-11-29 05:58:35,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:35,284 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 130 flow [2023-11-29 05:58:35,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-11-29 05:58:35,290 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-11-29 05:58:35,290 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 130 flow [2023-11-29 05:58:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-29 05:58:35,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:35,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 05:58:35,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:58:35,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:35,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash 23927301, now seen corresponding path program 1 times [2023-11-29 05:58:35,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:35,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890962441] [2023-11-29 05:58:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890962441] [2023-11-29 05:58:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890962441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:58:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485882732] [2023-11-29 05:58:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:35,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:35,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:35,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-29 05:58:35,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:35,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:35,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:35,620 INFO L124 PetriNetUnfolderBase]: 473/839 cut-off events. [2023-11-29 05:58:35,620 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-29 05:58:35,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 839 events. 473/839 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3679 event pairs, 333 based on Foata normal form. 4/660 useless extension candidates. Maximal degree in co-relation 1512. Up to 692 conditions per place. [2023-11-29 05:58:35,629 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 38 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-29 05:58:35,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 274 flow [2023-11-29 05:58:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:58:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:58:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 05:58:35,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-29 05:58:35,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 05:58:35,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 05:58:35,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:35,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 05:58:35,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-29 05:58:35,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:35,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:35,635 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 130 flow. Second operand 4 states and 119 transitions. [2023-11-29 05:58:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 274 flow [2023-11-29 05:58:35,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:58:35,639 INFO L231 Difference]: Finished difference. Result has 56 places, 64 transitions, 218 flow [2023-11-29 05:58:35,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=64} [2023-11-29 05:58:35,640 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-29 05:58:35,640 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 64 transitions, 218 flow [2023-11-29 05:58:35,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-29 05:58:35,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:35,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 05:58:35,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:58:35,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:35,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash -145567351, now seen corresponding path program 1 times [2023-11-29 05:58:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677350093] [2023-11-29 05:58:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:35,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677350093] [2023-11-29 05:58:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677350093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063336591] [2023-11-29 05:58:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:35,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:35,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:35,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:58:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:35,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:58:35,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:35,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:35,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063336591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:35,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 05:58:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828617983] [2023-11-29 05:58:35,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:58:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:58:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:58:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:36,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 64 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 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) [2023-11-29 05:58:36,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:36,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:36,366 INFO L124 PetriNetUnfolderBase]: 485/887 cut-off events. [2023-11-29 05:58:36,367 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-29 05:58:36,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 887 events. 485/887 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4114 event pairs, 333 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 1529. Up to 695 conditions per place. [2023-11-29 05:58:36,376 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 38 selfloop transitions, 49 changer transitions 0/100 dead transitions. [2023-11-29 05:58:36,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 554 flow [2023-11-29 05:58:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:58:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:58:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2023-11-29 05:58:36,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245901639344262 [2023-11-29 05:58:36,380 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 259 transitions. [2023-11-29 05:58:36,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 259 transitions. [2023-11-29 05:58:36,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:36,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 259 transitions. [2023-11-29 05:58:36,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.9) internal successors, (259), 10 states have internal predecessors, (259), 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) [2023-11-29 05:58:36,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:36,385 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:36,386 INFO L175 Difference]: Start difference. First operand has 56 places, 64 transitions, 218 flow. Second operand 10 states and 259 transitions. [2023-11-29 05:58:36,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 554 flow [2023-11-29 05:58:36,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:58:36,391 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 544 flow [2023-11-29 05:58:36,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2023-11-29 05:58:36,392 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-11-29 05:58:36,392 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 544 flow [2023-11-29 05:58:36,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 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) [2023-11-29 05:58:36,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:36,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:36,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:36,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:36,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash 248633846, now seen corresponding path program 1 times [2023-11-29 05:58:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199510957] [2023-11-29 05:58:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:36,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199510957] [2023-11-29 05:58:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199510957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:36,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:58:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458119084] [2023-11-29 05:58:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:36,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:36,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:36,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:36,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 05:58:36,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:36,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:36,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:37,058 INFO L124 PetriNetUnfolderBase]: 919/1566 cut-off events. [2023-11-29 05:58:37,059 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-29 05:58:37,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 1566 events. 919/1566 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7723 event pairs, 493 based on Foata normal form. 42/1262 useless extension candidates. Maximal degree in co-relation 3029. Up to 1057 conditions per place. [2023-11-29 05:58:37,074 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 110 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-29 05:58:37,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 129 transitions, 836 flow [2023-11-29 05:58:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:58:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:58:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2023-11-29 05:58:37,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2023-11-29 05:58:37,076 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:37,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-29 05:58:37,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:37,079 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:37,079 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 544 flow. Second operand 4 states and 156 transitions. [2023-11-29 05:58:37,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 129 transitions, 836 flow [2023-11-29 05:58:37,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 129 transitions, 710 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:37,087 INFO L231 Difference]: Finished difference. Result has 69 places, 103 transitions, 447 flow [2023-11-29 05:58:37,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=447, PETRI_PLACES=69, PETRI_TRANSITIONS=103} [2023-11-29 05:58:37,088 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-11-29 05:58:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 103 transitions, 447 flow [2023-11-29 05:58:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 05:58:37,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:37,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:37,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:58:37,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:37,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1611668383, now seen corresponding path program 1 times [2023-11-29 05:58:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411896568] [2023-11-29 05:58:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411896568] [2023-11-29 05:58:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411896568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:37,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:58:37,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714801752] [2023-11-29 05:58:37,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:37,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:37,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:37,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 103 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-29 05:58:37,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:37,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:37,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:37,521 INFO L124 PetriNetUnfolderBase]: 1471/2399 cut-off events. [2023-11-29 05:58:37,521 INFO L125 PetriNetUnfolderBase]: For 899/971 co-relation queries the response was YES. [2023-11-29 05:58:37,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5558 conditions, 2399 events. 1471/2399 cut-off events. For 899/971 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12441 event pairs, 765 based on Foata normal form. 68/2014 useless extension candidates. Maximal degree in co-relation 5449. Up to 1601 conditions per place. [2023-11-29 05:58:37,537 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 119 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2023-11-29 05:58:37,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 807 flow [2023-11-29 05:58:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:58:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:58:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2023-11-29 05:58:37,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2023-11-29 05:58:37,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:37,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 156 transitions. [2023-11-29 05:58:37,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-29 05:58:37,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:37,540 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:37,541 INFO L175 Difference]: Start difference. First operand has 69 places, 103 transitions, 447 flow. Second operand 4 states and 156 transitions. [2023-11-29 05:58:37,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 807 flow [2023-11-29 05:58:37,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:37,546 INFO L231 Difference]: Finished difference. Result has 73 places, 106 transitions, 473 flow [2023-11-29 05:58:37,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=4, PETRI_FLOW=473, PETRI_PLACES=73, PETRI_TRANSITIONS=106} [2023-11-29 05:58:37,547 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-11-29 05:58:37,547 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 106 transitions, 473 flow [2023-11-29 05:58:37,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-29 05:58:37,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:37,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:37,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:58:37,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:37,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1766867297, now seen corresponding path program 1 times [2023-11-29 05:58:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094189009] [2023-11-29 05:58:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:37,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094189009] [2023-11-29 05:58:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094189009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:37,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:58:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4988382] [2023-11-29 05:58:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:37,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:37,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 05:58:37,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 106 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-11-29 05:58:37,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:37,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 05:58:37,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:38,112 INFO L124 PetriNetUnfolderBase]: 1664/3041 cut-off events. [2023-11-29 05:58:38,112 INFO L125 PetriNetUnfolderBase]: For 1701/1735 co-relation queries the response was YES. [2023-11-29 05:58:38,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7672 conditions, 3041 events. 1664/3041 cut-off events. For 1701/1735 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17018 event pairs, 1034 based on Foata normal form. 62/2704 useless extension candidates. Maximal degree in co-relation 7487. Up to 1580 conditions per place. [2023-11-29 05:58:38,132 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 138 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2023-11-29 05:58:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1170 flow [2023-11-29 05:58:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:58:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:58:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2023-11-29 05:58:38,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639344262295082 [2023-11-29 05:58:38,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 243 transitions. [2023-11-29 05:58:38,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 243 transitions. [2023-11-29 05:58:38,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:38,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 243 transitions. [2023-11-29 05:58:38,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 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) [2023-11-29 05:58:38,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:38,137 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:38,137 INFO L175 Difference]: Start difference. First operand has 73 places, 106 transitions, 473 flow. Second operand 6 states and 243 transitions. [2023-11-29 05:58:38,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1170 flow [2023-11-29 05:58:38,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 190 transitions, 1161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:38,145 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 667 flow [2023-11-29 05:58:38,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=667, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2023-11-29 05:58:38,147 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-11-29 05:58:38,147 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 667 flow [2023-11-29 05:58:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-11-29 05:58:38,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:38,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:38,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:58:38,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:38,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1661089007, now seen corresponding path program 1 times [2023-11-29 05:58:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576343875] [2023-11-29 05:58:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:38,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576343875] [2023-11-29 05:58:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576343875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:58:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139941764] [2023-11-29 05:58:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:38,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:38,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-29 05:58:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:38,700 INFO L124 PetriNetUnfolderBase]: 2008/3296 cut-off events. [2023-11-29 05:58:38,701 INFO L125 PetriNetUnfolderBase]: For 2843/3061 co-relation queries the response was YES. [2023-11-29 05:58:38,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8963 conditions, 3296 events. 2008/3296 cut-off events. For 2843/3061 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16514 event pairs, 606 based on Foata normal form. 136/2952 useless extension candidates. Maximal degree in co-relation 8768. Up to 1214 conditions per place. [2023-11-29 05:58:38,723 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 138 selfloop transitions, 10 changer transitions 0/163 dead transitions. [2023-11-29 05:58:38,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 163 transitions, 1149 flow [2023-11-29 05:58:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:58:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:58:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-29 05:58:38,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672131147540984 [2023-11-29 05:58:38,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-29 05:58:38,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-29 05:58:38,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:38,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-29 05:58:38,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2023-11-29 05:58:38,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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) [2023-11-29 05:58:38,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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) [2023-11-29 05:58:38,727 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 667 flow. Second operand 5 states and 173 transitions. [2023-11-29 05:58:38,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 163 transitions, 1149 flow [2023-11-29 05:58:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 163 transitions, 1143 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 05:58:38,737 INFO L231 Difference]: Finished difference. Result has 83 places, 121 transitions, 679 flow [2023-11-29 05:58:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=83, PETRI_TRANSITIONS=121} [2023-11-29 05:58:38,738 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-11-29 05:58:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 121 transitions, 679 flow [2023-11-29 05:58:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-29 05:58:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:58:38,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:38,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 227423099, now seen corresponding path program 1 times [2023-11-29 05:58:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849680664] [2023-11-29 05:58:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:38,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:58:38,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849680664] [2023-11-29 05:58:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849680664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:38,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:38,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:58:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046139517] [2023-11-29 05:58:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:38,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:58:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:58:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:58:38,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 05:58:38,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 121 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2023-11-29 05:58:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 05:58:38,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:39,451 INFO L124 PetriNetUnfolderBase]: 1354/2457 cut-off events. [2023-11-29 05:58:39,451 INFO L125 PetriNetUnfolderBase]: For 2260/2282 co-relation queries the response was YES. [2023-11-29 05:58:39,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 2457 events. 1354/2457 cut-off events. For 2260/2282 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13199 event pairs, 878 based on Foata normal form. 38/2246 useless extension candidates. Maximal degree in co-relation 6732. Up to 1580 conditions per place. [2023-11-29 05:58:39,473 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 98 selfloop transitions, 63 changer transitions 2/179 dead transitions. [2023-11-29 05:58:39,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 179 transitions, 1259 flow [2023-11-29 05:58:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:58:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:58:39,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2023-11-29 05:58:39,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6088992974238876 [2023-11-29 05:58:39,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 260 transitions. [2023-11-29 05:58:39,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 260 transitions. [2023-11-29 05:58:39,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:39,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 260 transitions. [2023-11-29 05:58:39,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 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) [2023-11-29 05:58:39,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2023-11-29 05:58:39,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2023-11-29 05:58:39,479 INFO L175 Difference]: Start difference. First operand has 83 places, 121 transitions, 679 flow. Second operand 7 states and 260 transitions. [2023-11-29 05:58:39,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 179 transitions, 1259 flow [2023-11-29 05:58:39,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 179 transitions, 1215 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:39,492 INFO L231 Difference]: Finished difference. Result has 89 places, 151 transitions, 1079 flow [2023-11-29 05:58:39,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1079, PETRI_PLACES=89, PETRI_TRANSITIONS=151} [2023-11-29 05:58:39,493 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2023-11-29 05:58:39,493 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 151 transitions, 1079 flow [2023-11-29 05:58:39,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2023-11-29 05:58:39,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:39,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:58:39,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:39,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -45847503, now seen corresponding path program 1 times [2023-11-29 05:58:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848040293] [2023-11-29 05:58:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:39,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848040293] [2023-11-29 05:58:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848040293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:58:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884648743] [2023-11-29 05:58:39,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:58:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:58:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:58:39,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:39,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 151 transitions, 1079 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-29 05:58:39,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:39,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:39,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:40,147 INFO L124 PetriNetUnfolderBase]: 1586/2753 cut-off events. [2023-11-29 05:58:40,147 INFO L125 PetriNetUnfolderBase]: For 3434/3482 co-relation queries the response was YES. [2023-11-29 05:58:40,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2753 events. 1586/2753 cut-off events. For 3434/3482 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14312 event pairs, 1083 based on Foata normal form. 0/2391 useless extension candidates. Maximal degree in co-relation 7639. Up to 1898 conditions per place. [2023-11-29 05:58:40,171 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 74 selfloop transitions, 55 changer transitions 33/177 dead transitions. [2023-11-29 05:58:40,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 177 transitions, 1496 flow [2023-11-29 05:58:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:58:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:58:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2023-11-29 05:58:40,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6092896174863388 [2023-11-29 05:58:40,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 223 transitions. [2023-11-29 05:58:40,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 223 transitions. [2023-11-29 05:58:40,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:40,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 223 transitions. [2023-11-29 05:58:40,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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) [2023-11-29 05:58:40,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:40,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:40,176 INFO L175 Difference]: Start difference. First operand has 89 places, 151 transitions, 1079 flow. Second operand 6 states and 223 transitions. [2023-11-29 05:58:40,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 177 transitions, 1496 flow [2023-11-29 05:58:40,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 177 transitions, 1458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:58:40,191 INFO L231 Difference]: Finished difference. Result has 94 places, 141 transitions, 1105 flow [2023-11-29 05:58:40,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=94, PETRI_TRANSITIONS=141} [2023-11-29 05:58:40,192 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2023-11-29 05:58:40,192 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 141 transitions, 1105 flow [2023-11-29 05:58:40,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-29 05:58:40,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:40,193 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 05:58:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:58:40,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:40,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1318634235, now seen corresponding path program 2 times [2023-11-29 05:58:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548757604] [2023-11-29 05:58:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:40,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548757604] [2023-11-29 05:58:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548757604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794660299] [2023-11-29 05:58:40,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:40,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:40,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:40,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:58:40,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:58:40,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:40,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:58:40,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:58:40,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:58:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794660299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:40,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 05:58:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184734662] [2023-11-29 05:58:40,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:58:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:58:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:58:40,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 141 transitions, 1105 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-29 05:58:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:40,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:40,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:41,277 INFO L124 PetriNetUnfolderBase]: 1146/2116 cut-off events. [2023-11-29 05:58:41,278 INFO L125 PetriNetUnfolderBase]: For 2685/2715 co-relation queries the response was YES. [2023-11-29 05:58:41,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 2116 events. 1146/2116 cut-off events. For 2685/2715 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11786 event pairs, 765 based on Foata normal form. 8/1973 useless extension candidates. Maximal degree in co-relation 5816. Up to 1569 conditions per place. [2023-11-29 05:58:41,296 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 48 selfloop transitions, 100 changer transitions 0/160 dead transitions. [2023-11-29 05:58:41,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 160 transitions, 1581 flow [2023-11-29 05:58:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:58:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 05:58:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 486 transitions. [2023-11-29 05:58:41,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319672131147541 [2023-11-29 05:58:41,299 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 486 transitions. [2023-11-29 05:58:41,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 486 transitions. [2023-11-29 05:58:41,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:41,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 486 transitions. [2023-11-29 05:58:41,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 20.25) internal successors, (486), 24 states have internal predecessors, (486), 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) [2023-11-29 05:58:41,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:41,306 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:41,306 INFO L175 Difference]: Start difference. First operand has 94 places, 141 transitions, 1105 flow. Second operand 24 states and 486 transitions. [2023-11-29 05:58:41,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 160 transitions, 1581 flow [2023-11-29 05:58:41,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 160 transitions, 1362 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-11-29 05:58:41,325 INFO L231 Difference]: Finished difference. Result has 103 places, 160 transitions, 1327 flow [2023-11-29 05:58:41,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1327, PETRI_PLACES=103, PETRI_TRANSITIONS=160} [2023-11-29 05:58:41,326 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 44 predicate places. [2023-11-29 05:58:41,326 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 160 transitions, 1327 flow [2023-11-29 05:58:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-29 05:58:41,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:41,327 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 05:58:41,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:58:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:58:41,530 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:41,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2084642954, now seen corresponding path program 1 times [2023-11-29 05:58:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682144630] [2023-11-29 05:58:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:58:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:41,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682144630] [2023-11-29 05:58:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682144630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:41,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:58:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419291327] [2023-11-29 05:58:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:41,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-29 05:58:41,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 160 transitions, 1327 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-11-29 05:58:41,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:41,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-29 05:58:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:41,910 INFO L124 PetriNetUnfolderBase]: 1133/2049 cut-off events. [2023-11-29 05:58:41,910 INFO L125 PetriNetUnfolderBase]: For 1266/1288 co-relation queries the response was YES. [2023-11-29 05:58:41,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 2049 events. 1133/2049 cut-off events. For 1266/1288 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11366 event pairs, 765 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 5127. Up to 1589 conditions per place. [2023-11-29 05:58:41,921 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 77 selfloop transitions, 20 changer transitions 5/117 dead transitions. [2023-11-29 05:58:41,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 117 transitions, 1028 flow [2023-11-29 05:58:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:58:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:58:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2023-11-29 05:58:41,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2023-11-29 05:58:41,923 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2023-11-29 05:58:41,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2023-11-29 05:58:41,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:41,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2023-11-29 05:58:41,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2023-11-29 05:58:41,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:41,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-29 05:58:41,925 INFO L175 Difference]: Start difference. First operand has 103 places, 160 transitions, 1327 flow. Second operand 4 states and 147 transitions. [2023-11-29 05:58:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 117 transitions, 1028 flow [2023-11-29 05:58:41,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 796 flow, removed 51 selfloop flow, removed 12 redundant places. [2023-11-29 05:58:41,931 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 607 flow [2023-11-29 05:58:41,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=607, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2023-11-29 05:58:41,931 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2023-11-29 05:58:41,931 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 607 flow [2023-11-29 05:58:41,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-11-29 05:58:41,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:41,932 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:41,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:58:41,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:41,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash 225398798, now seen corresponding path program 1 times [2023-11-29 05:58:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785426310] [2023-11-29 05:58:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:58:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785426310] [2023-11-29 05:58:42,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785426310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20210512] [2023-11-29 05:58:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:42,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:42,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:42,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:58:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:42,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:58:42,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:42,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:42,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20210512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:42,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:42,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-11-29 05:58:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717585072] [2023-11-29 05:58:42,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:58:42,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:58:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:58:42,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:42,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 607 flow. Second operand has 21 states, 21 states have (on average 17.285714285714285) internal successors, (363), 21 states have internal predecessors, (363), 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) [2023-11-29 05:58:42,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:42,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:42,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:43,395 INFO L124 PetriNetUnfolderBase]: 2241/3959 cut-off events. [2023-11-29 05:58:43,395 INFO L125 PetriNetUnfolderBase]: For 2213/2324 co-relation queries the response was YES. [2023-11-29 05:58:43,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 3959 events. 2241/3959 cut-off events. For 2213/2324 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 22184 event pairs, 1530 based on Foata normal form. 3/3510 useless extension candidates. Maximal degree in co-relation 9806. Up to 1564 conditions per place. [2023-11-29 05:58:43,413 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 63 selfloop transitions, 74 changer transitions 0/149 dead transitions. [2023-11-29 05:58:43,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 149 transitions, 1049 flow [2023-11-29 05:58:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:58:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:58:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2023-11-29 05:58:43,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39940387481371087 [2023-11-29 05:58:43,415 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 268 transitions. [2023-11-29 05:58:43,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 268 transitions. [2023-11-29 05:58:43,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:43,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 268 transitions. [2023-11-29 05:58:43,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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) [2023-11-29 05:58:43,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:43,418 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:43,419 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 607 flow. Second operand 11 states and 268 transitions. [2023-11-29 05:58:43,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 149 transitions, 1049 flow [2023-11-29 05:58:43,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 912 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:43,425 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 692 flow [2023-11-29 05:58:43,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=692, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2023-11-29 05:58:43,426 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 36 predicate places. [2023-11-29 05:58:43,427 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 692 flow [2023-11-29 05:58:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.285714285714285) internal successors, (363), 21 states have internal predecessors, (363), 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) [2023-11-29 05:58:43,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:43,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:43,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:58:43,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:58:43,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:43,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -877138778, now seen corresponding path program 1 times [2023-11-29 05:58:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949091451] [2023-11-29 05:58:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949091451] [2023-11-29 05:58:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949091451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666013019] [2023-11-29 05:58:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:43,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:43,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:58:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:43,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:58:43,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:43,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:58:43,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666013019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:43,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:58:43,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 05:58:43,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824444635] [2023-11-29 05:58:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:43,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:58:43,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:58:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:58:43,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:43,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-11-29 05:58:43,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:43,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:43,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:44,446 INFO L124 PetriNetUnfolderBase]: 2553/4138 cut-off events. [2023-11-29 05:58:44,446 INFO L125 PetriNetUnfolderBase]: For 1917/2053 co-relation queries the response was YES. [2023-11-29 05:58:44,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 4138 events. 2553/4138 cut-off events. For 1917/2053 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21220 event pairs, 482 based on Foata normal form. 124/3650 useless extension candidates. Maximal degree in co-relation 10505. Up to 1289 conditions per place. [2023-11-29 05:58:44,466 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 164 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2023-11-29 05:58:44,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 184 transitions, 1234 flow [2023-11-29 05:58:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:58:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:58:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2023-11-29 05:58:44,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-11-29 05:58:44,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 224 transitions. [2023-11-29 05:58:44,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 224 transitions. [2023-11-29 05:58:44,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:44,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 224 transitions. [2023-11-29 05:58:44,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2023-11-29 05:58:44,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:44,471 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:44,471 INFO L175 Difference]: Start difference. First operand has 95 places, 121 transitions, 692 flow. Second operand 6 states and 224 transitions. [2023-11-29 05:58:44,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 184 transitions, 1234 flow [2023-11-29 05:58:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 184 transitions, 1226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:44,481 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 694 flow [2023-11-29 05:58:44,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2023-11-29 05:58:44,482 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2023-11-29 05:58:44,482 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 694 flow [2023-11-29 05:58:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-11-29 05:58:44,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:44,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:44,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:58:44,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:58:44,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1421497524, now seen corresponding path program 1 times [2023-11-29 05:58:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:44,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34589957] [2023-11-29 05:58:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:44,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:44,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34589957] [2023-11-29 05:58:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34589957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730499937] [2023-11-29 05:58:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:44,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:44,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:58:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:44,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:58:44,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:44,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730499937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:44,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:44,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 05:58:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014163724] [2023-11-29 05:58:44,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:58:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:58:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:58:44,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:44,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 694 flow. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2023-11-29 05:58:44,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:44,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:44,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:45,985 INFO L124 PetriNetUnfolderBase]: 4797/7602 cut-off events. [2023-11-29 05:58:45,985 INFO L125 PetriNetUnfolderBase]: For 5761/6077 co-relation queries the response was YES. [2023-11-29 05:58:45,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21324 conditions, 7602 events. 4797/7602 cut-off events. For 5761/6077 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 40240 event pairs, 1146 based on Foata normal form. 372/6844 useless extension candidates. Maximal degree in co-relation 21209. Up to 3093 conditions per place. [2023-11-29 05:58:46,020 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 231 selfloop transitions, 13 changer transitions 0/257 dead transitions. [2023-11-29 05:58:46,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 257 transitions, 1644 flow [2023-11-29 05:58:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:58:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:58:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 375 transitions. [2023-11-29 05:58:46,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6147540983606558 [2023-11-29 05:58:46,023 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 375 transitions. [2023-11-29 05:58:46,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 375 transitions. [2023-11-29 05:58:46,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:46,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 375 transitions. [2023-11-29 05:58:46,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.5) internal successors, (375), 10 states have internal predecessors, (375), 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) [2023-11-29 05:58:46,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:46,027 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:46,027 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 694 flow. Second operand 10 states and 375 transitions. [2023-11-29 05:58:46,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 257 transitions, 1644 flow [2023-11-29 05:58:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 257 transitions, 1598 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:46,045 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 746 flow [2023-11-29 05:58:46,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=746, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2023-11-29 05:58:46,046 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 46 predicate places. [2023-11-29 05:58:46,046 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 746 flow [2023-11-29 05:58:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2023-11-29 05:58:46,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:46,047 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-29 05:58:46,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:58:46,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:58:46,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -619003382, now seen corresponding path program 2 times [2023-11-29 05:58:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665117601] [2023-11-29 05:58:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:58:46,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665117601] [2023-11-29 05:58:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665117601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806560751] [2023-11-29 05:58:46,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:46,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:46,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:46,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:46,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:58:46,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:58:46,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:46,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:58:46,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:58:46,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:58:46,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806560751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:46,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:46,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-29 05:58:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982711285] [2023-11-29 05:58:46,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:46,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:58:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:58:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:58:47,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-29 05:58:47,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 746 flow. Second operand has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2023-11-29 05:58:47,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:47,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-29 05:58:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:48,283 INFO L124 PetriNetUnfolderBase]: 4488/7481 cut-off events. [2023-11-29 05:58:48,283 INFO L125 PetriNetUnfolderBase]: For 7592/7788 co-relation queries the response was YES. [2023-11-29 05:58:48,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20622 conditions, 7481 events. 4488/7481 cut-off events. For 7592/7788 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 42520 event pairs, 3018 based on Foata normal form. 6/6749 useless extension candidates. Maximal degree in co-relation 20523. Up to 6074 conditions per place. [2023-11-29 05:58:48,321 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 37 selfloop transitions, 96 changer transitions 0/144 dead transitions. [2023-11-29 05:58:48,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 144 transitions, 1090 flow [2023-11-29 05:58:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:58:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:58:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 404 transitions. [2023-11-29 05:58:48,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485763589301122 [2023-11-29 05:58:48,324 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 404 transitions. [2023-11-29 05:58:48,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 404 transitions. [2023-11-29 05:58:48,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:48,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 404 transitions. [2023-11-29 05:58:48,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.263157894736842) internal successors, (404), 19 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:48,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 61.0) internal successors, (1220), 20 states have internal predecessors, (1220), 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) [2023-11-29 05:58:48,329 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 61.0) internal successors, (1220), 20 states have internal predecessors, (1220), 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) [2023-11-29 05:58:48,329 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 746 flow. Second operand 19 states and 404 transitions. [2023-11-29 05:58:48,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 144 transitions, 1090 flow [2023-11-29 05:58:48,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 1023 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:48,346 INFO L231 Difference]: Finished difference. Result has 114 places, 144 transitions, 949 flow [2023-11-29 05:58:48,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=949, PETRI_PLACES=114, PETRI_TRANSITIONS=144} [2023-11-29 05:58:48,346 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 55 predicate places. [2023-11-29 05:58:48,347 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 949 flow [2023-11-29 05:58:48,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2023-11-29 05:58:48,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:48,347 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:48,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:58:48,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:58:48,548 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:48,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash 558037954, now seen corresponding path program 1 times [2023-11-29 05:58:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910453919] [2023-11-29 05:58:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:48,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910453919] [2023-11-29 05:58:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910453919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687148069] [2023-11-29 05:58:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:48,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:48,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:48,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:48,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:58:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:48,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:58:48,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:48,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:58:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687148069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:58:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 05:58:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837101505] [2023-11-29 05:58:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:48,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:58:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:58:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:58:48,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:48,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 144 transitions, 949 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2023-11-29 05:58:48,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:48,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:48,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:49,721 INFO L124 PetriNetUnfolderBase]: 5176/7973 cut-off events. [2023-11-29 05:58:49,721 INFO L125 PetriNetUnfolderBase]: For 5507/5567 co-relation queries the response was YES. [2023-11-29 05:58:49,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21687 conditions, 7973 events. 5176/7973 cut-off events. For 5507/5567 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 41734 event pairs, 874 based on Foata normal form. 256/7190 useless extension candidates. Maximal degree in co-relation 21579. Up to 2131 conditions per place. [2023-11-29 05:58:49,760 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 227 selfloop transitions, 7 changer transitions 0/243 dead transitions. [2023-11-29 05:58:49,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 243 transitions, 1813 flow [2023-11-29 05:58:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:58:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:58:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2023-11-29 05:58:49,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-11-29 05:58:49,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 224 transitions. [2023-11-29 05:58:49,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 224 transitions. [2023-11-29 05:58:49,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:49,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 224 transitions. [2023-11-29 05:58:49,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2023-11-29 05:58:49,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:49,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-29 05:58:49,764 INFO L175 Difference]: Start difference. First operand has 114 places, 144 transitions, 949 flow. Second operand 6 states and 224 transitions. [2023-11-29 05:58:49,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 243 transitions, 1813 flow [2023-11-29 05:58:49,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 243 transitions, 1639 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 05:58:49,798 INFO L231 Difference]: Finished difference. Result has 108 places, 143 transitions, 785 flow [2023-11-29 05:58:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=785, PETRI_PLACES=108, PETRI_TRANSITIONS=143} [2023-11-29 05:58:49,799 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 49 predicate places. [2023-11-29 05:58:49,799 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 143 transitions, 785 flow [2023-11-29 05:58:49,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2023-11-29 05:58:49,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:49,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:49,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:58:49,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:58:50,000 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:50,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash 284767352, now seen corresponding path program 1 times [2023-11-29 05:58:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356620637] [2023-11-29 05:58:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:58:50,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356620637] [2023-11-29 05:58:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356620637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545490424] [2023-11-29 05:58:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:50,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:50,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:50,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:58:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:50,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:58:50,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:58:50,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:58:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545490424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:50,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:50,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2023-11-29 05:58:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720151108] [2023-11-29 05:58:50,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:50,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:58:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:58:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:58:50,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-29 05:58:50,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 785 flow. Second operand has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2023-11-29 05:58:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-29 05:58:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:52,124 INFO L124 PetriNetUnfolderBase]: 5106/7910 cut-off events. [2023-11-29 05:58:52,124 INFO L125 PetriNetUnfolderBase]: For 10187/10348 co-relation queries the response was YES. [2023-11-29 05:58:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23330 conditions, 7910 events. 5106/7910 cut-off events. For 10187/10348 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 41109 event pairs, 1974 based on Foata normal form. 0/6995 useless extension candidates. Maximal degree in co-relation 23237. Up to 2420 conditions per place. [2023-11-29 05:58:52,158 INFO L140 encePairwiseOnDemand]: 43/61 looper letters, 206 selfloop transitions, 66 changer transitions 12/293 dead transitions. [2023-11-29 05:58:52,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 293 transitions, 2052 flow [2023-11-29 05:58:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:58:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:58:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 352 transitions. [2023-11-29 05:58:52,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3846994535519126 [2023-11-29 05:58:52,159 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 352 transitions. [2023-11-29 05:58:52,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 352 transitions. [2023-11-29 05:58:52,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:52,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 352 transitions. [2023-11-29 05:58:52,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.466666666666665) internal successors, (352), 15 states have internal predecessors, (352), 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) [2023-11-29 05:58:52,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 61.0) internal successors, (976), 16 states have internal predecessors, (976), 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) [2023-11-29 05:58:52,162 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 61.0) internal successors, (976), 16 states have internal predecessors, (976), 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) [2023-11-29 05:58:52,162 INFO L175 Difference]: Start difference. First operand has 108 places, 143 transitions, 785 flow. Second operand 15 states and 352 transitions. [2023-11-29 05:58:52,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 293 transitions, 2052 flow [2023-11-29 05:58:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 293 transitions, 1920 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 05:58:52,181 INFO L231 Difference]: Finished difference. Result has 116 places, 146 transitions, 902 flow [2023-11-29 05:58:52,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=902, PETRI_PLACES=116, PETRI_TRANSITIONS=146} [2023-11-29 05:58:52,181 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 57 predicate places. [2023-11-29 05:58:52,181 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 146 transitions, 902 flow [2023-11-29 05:58:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2023-11-29 05:58:52,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:52,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:52,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:58:52,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:58:52,383 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:52,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 119308215, now seen corresponding path program 1 times [2023-11-29 05:58:52,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:52,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5805551] [2023-11-29 05:58:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:52,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:52,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5805551] [2023-11-29 05:58:52,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5805551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579847950] [2023-11-29 05:58:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:52,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:52,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:52,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:52,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:58:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:52,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:58:52,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:52,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:58:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579847950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:52,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 05:58:52,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488699640] [2023-11-29 05:58:52,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:58:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:58:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:58:52,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-29 05:58:52,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 146 transitions, 902 flow. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2023-11-29 05:58:52,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:52,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-29 05:58:52,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:54,556 INFO L124 PetriNetUnfolderBase]: 11434/16983 cut-off events. [2023-11-29 05:58:54,556 INFO L125 PetriNetUnfolderBase]: For 16482/16676 co-relation queries the response was YES. [2023-11-29 05:58:54,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46761 conditions, 16983 events. 11434/16983 cut-off events. For 16482/16676 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 93962 event pairs, 2650 based on Foata normal form. 846/15395 useless extension candidates. Maximal degree in co-relation 46666. Up to 6679 conditions per place. [2023-11-29 05:58:54,650 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 382 selfloop transitions, 13 changer transitions 0/403 dead transitions. [2023-11-29 05:58:54,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 403 transitions, 2778 flow [2023-11-29 05:58:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:58:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:58:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 373 transitions. [2023-11-29 05:58:54,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114754098360655 [2023-11-29 05:58:54,652 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 373 transitions. [2023-11-29 05:58:54,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 373 transitions. [2023-11-29 05:58:54,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:54,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 373 transitions. [2023-11-29 05:58:54,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.3) internal successors, (373), 10 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:54,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:54,656 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-29 05:58:54,656 INFO L175 Difference]: Start difference. First operand has 116 places, 146 transitions, 902 flow. Second operand 10 states and 373 transitions. [2023-11-29 05:58:54,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 403 transitions, 2778 flow [2023-11-29 05:58:54,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 403 transitions, 2672 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 05:58:54,700 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 870 flow [2023-11-29 05:58:54,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=870, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2023-11-29 05:58:54,701 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 59 predicate places. [2023-11-29 05:58:54,701 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 870 flow [2023-11-29 05:58:54,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2023-11-29 05:58:54,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:54,701 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:54,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:58:54,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:54,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1664365187, now seen corresponding path program 2 times [2023-11-29 05:58:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464084214] [2023-11-29 05:58:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:58:55,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464084214] [2023-11-29 05:58:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464084214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602448241] [2023-11-29 05:58:55,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:55,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:55,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:55,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:58:55,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:58:55,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:55,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:58:55,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:55,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602448241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:55,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-29 05:58:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584365558] [2023-11-29 05:58:55,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:58:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:58:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:58:55,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-29 05:58:55,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 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) [2023-11-29 05:58:55,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:55,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-29 05:58:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:56,862 INFO L124 PetriNetUnfolderBase]: 7850/12075 cut-off events. [2023-11-29 05:58:56,862 INFO L125 PetriNetUnfolderBase]: For 16774/16784 co-relation queries the response was YES. [2023-11-29 05:58:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36476 conditions, 12075 events. 7850/12075 cut-off events. For 16774/16784 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 64831 event pairs, 2722 based on Foata normal form. 268/11195 useless extension candidates. Maximal degree in co-relation 36380. Up to 5029 conditions per place. [2023-11-29 05:58:56,925 INFO L140 encePairwiseOnDemand]: 43/61 looper letters, 180 selfloop transitions, 67 changer transitions 30/285 dead transitions. [2023-11-29 05:58:56,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 285 transitions, 2028 flow [2023-11-29 05:58:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:58:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 05:58:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 333 transitions. [2023-11-29 05:58:56,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38992974238875877 [2023-11-29 05:58:56,927 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 333 transitions. [2023-11-29 05:58:56,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 333 transitions. [2023-11-29 05:58:56,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:56,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 333 transitions. [2023-11-29 05:58:56,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.785714285714285) internal successors, (333), 14 states have internal predecessors, (333), 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) [2023-11-29 05:58:56,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-29 05:58:56,930 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-29 05:58:56,930 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 870 flow. Second operand 14 states and 333 transitions. [2023-11-29 05:58:56,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 285 transitions, 2028 flow [2023-11-29 05:58:57,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 285 transitions, 1950 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-11-29 05:58:57,117 INFO L231 Difference]: Finished difference. Result has 127 places, 154 transitions, 988 flow [2023-11-29 05:58:57,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=988, PETRI_PLACES=127, PETRI_TRANSITIONS=154} [2023-11-29 05:58:57,118 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 68 predicate places. [2023-11-29 05:58:57,118 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 154 transitions, 988 flow [2023-11-29 05:58:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 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) [2023-11-29 05:58:57,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:57,118 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:57,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:58:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:57,319 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 05:58:57,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1210639103, now seen corresponding path program 2 times [2023-11-29 05:58:57,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:57,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655095990] [2023-11-29 05:58:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:58:57,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655095990] [2023-11-29 05:58:57,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655095990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150869411] [2023-11-29 05:58:57,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:58:57,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:57,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:57,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:58:57,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:58:57,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:57,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:58:57,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:57,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:58:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150869411] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:57,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 11 [2023-11-29 05:58:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363166415] [2023-11-29 05:58:57,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:58:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:58:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:58:57,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-29 05:58:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 154 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2023-11-29 05:58:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:57,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-29 05:58:57,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:59,123 INFO L124 PetriNetUnfolderBase]: 5414/8563 cut-off events. [2023-11-29 05:58:59,123 INFO L125 PetriNetUnfolderBase]: For 13672/13672 co-relation queries the response was YES. [2023-11-29 05:58:59,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26462 conditions, 8563 events. 5414/8563 cut-off events. For 13672/13672 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46448 event pairs, 1914 based on Foata normal form. 212/8151 useless extension candidates. Maximal degree in co-relation 26364. Up to 3677 conditions per place. [2023-11-29 05:58:59,142 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 0 selfloop transitions, 0 changer transitions 233/233 dead transitions. [2023-11-29 05:58:59,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 233 transitions, 1787 flow [2023-11-29 05:58:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:58:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 05:58:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 330 transitions. [2023-11-29 05:58:59,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864168618266979 [2023-11-29 05:58:59,143 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 330 transitions. [2023-11-29 05:58:59,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 330 transitions. [2023-11-29 05:58:59,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:59,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 330 transitions. [2023-11-29 05:58:59,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 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) [2023-11-29 05:58:59,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-29 05:58:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-29 05:58:59,147 INFO L175 Difference]: Start difference. First operand has 127 places, 154 transitions, 988 flow. Second operand 14 states and 330 transitions. [2023-11-29 05:58:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 233 transitions, 1787 flow [2023-11-29 05:58:59,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 233 transitions, 1695 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-29 05:58:59,202 INFO L231 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2023-11-29 05:58:59,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2023-11-29 05:58:59,203 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 68 predicate places. [2023-11-29 05:58:59,203 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2023-11-29 05:58:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2023-11-29 05:58:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-29 05:58:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-11-29 05:58:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-29 05:58:59,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-29 05:58:59,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-29 05:58:59,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-29 05:58:59,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-29 05:58:59,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-29 05:58:59,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:58:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:59,409 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:59,413 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 05:58:59,413 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:58:59,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:58:59 BasicIcfg [2023-11-29 05:58:59,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:58:59,417 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:58:59,417 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:58:59,417 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:58:59,418 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:58:34" (3/4) ... [2023-11-29 05:58:59,419 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 05:58:59,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 05:58:59,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 05:58:59,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 05:58:59,430 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 204 nodes and edges [2023-11-29 05:58:59,430 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-29 05:58:59,431 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-29 05:58:59,431 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 05:58:59,540 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:58:59,540 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 05:58:59,541 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:58:59,541 INFO L158 Benchmark]: Toolchain (without parser) took 26470.81ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 968.9MB). Free memory was 112.9MB in the beginning and 465.9MB in the end (delta: -353.0MB). Peak memory consumption was 617.5MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,542 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:58:59,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.97ms. Allocated memory is still 159.4MB. Free memory was 112.9MB in the beginning and 101.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.21ms. Allocated memory is still 159.4MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,543 INFO L158 Benchmark]: Boogie Preprocessor took 64.95ms. Allocated memory is still 159.4MB. Free memory was 98.8MB in the beginning and 95.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,543 INFO L158 Benchmark]: RCFGBuilder took 951.73ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 95.5MB in the beginning and 131.9MB in the end (delta: -36.4MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,544 INFO L158 Benchmark]: TraceAbstraction took 25037.82ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 130.9MB in the beginning and 473.2MB in the end (delta: -342.4MB). Peak memory consumption was 855.1MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,544 INFO L158 Benchmark]: Witness Printer took 123.75ms. Allocated memory is still 1.1GB. Free memory was 473.2MB in the beginning and 465.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 05:58:59,546 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.97ms. Allocated memory is still 159.4MB. Free memory was 112.9MB in the beginning and 101.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.21ms. Allocated memory is still 159.4MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.95ms. Allocated memory is still 159.4MB. Free memory was 98.8MB in the beginning and 95.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 951.73ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 95.5MB in the beginning and 131.9MB in the end (delta: -36.4MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * TraceAbstraction took 25037.82ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 130.9MB in the beginning and 473.2MB in the end (delta: -342.4MB). Peak memory consumption was 855.1MB. Max. memory is 16.1GB. * Witness Printer took 123.75ms. Allocated memory is still 1.1GB. Free memory was 473.2MB in the beginning and 465.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 79 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.9s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2323 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2179 mSDsluCounter, 1861 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1769 mSDsCounter, 633 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7301 IncrementalHoareTripleChecker+Invalid, 7934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 633 mSolverCounterUnsat, 92 mSDtfsCounter, 7301 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 422 SyntacticMatches, 5 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1327occurred in iteration=10, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 640 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 2174 SizeOfPredicates, 39 NumberOfNonLiveVariables, 2286 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 40 InterpolantComputations, 11 PerfectInterpolantSequences, 538/718 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 05:58:59,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d10c7fd7-e99f-488a-861a-f559cf656ace/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE