./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:11:16,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:11:16,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:11:16,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:11:16,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:11:16,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:11:16,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:11:16,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:11:16,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:11:16,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:11:16,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:11:16,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:11:16,623 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:11:16,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:11:16,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:11:16,627 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:11:16,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:11:16,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:11:16,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:11:16,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:11:16,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:11:16,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:11:16,636 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:11:16,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:11:16,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:11:16,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:11:16,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:11:16,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:11:16,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:11:16,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:11:16,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:11:16,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:11:16,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:11:16,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:11:16,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:11:16,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:11:16,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:11:16,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:11:16,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:11:16,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:11:16,645 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:11:16,645 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_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2023-11-06 23:11:16,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:11:17,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:11:17,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:11:17,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:11:17,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:11:17,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-06 23:11:20,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:11:20,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:11:20,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-06 23:11:20,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/data/44636ad2d/6b50e916e7b94b56a66543e8b26c27c0/FLAG84385b387 [2023-11-06 23:11:20,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/data/44636ad2d/6b50e916e7b94b56a66543e8b26c27c0 [2023-11-06 23:11:20,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:11:20,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:11:20,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:11:20,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:11:20,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:11:20,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:20" (1/1) ... [2023-11-06 23:11:20,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7054b100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:20, skipping insertion in model container [2023-11-06 23:11:20,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:20" (1/1) ... [2023-11-06 23:11:20,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:11:21,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:11:21,055 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:11:21,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:11:21,142 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:11:21,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21 WrapperNode [2023-11-06 23:11:21,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:11:21,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:11:21,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:11:21,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:11:21,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,233 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 499 [2023-11-06 23:11:21,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:11:21,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:11:21,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:11:21,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:11:21,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:11:21,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:11:21,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:11:21,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:11:21,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (1/1) ... [2023-11-06 23:11:21,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:11:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:21,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:11:21,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:11:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:11:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:11:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:11:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:11:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:11:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:11:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:11:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:11:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:11:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:11:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:11:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:11:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:11:21,444 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:11:21,628 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:11:21,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:11:22,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:11:22,660 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:11:22,660 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:11:22,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:22 BoogieIcfgContainer [2023-11-06 23:11:22,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:11:22,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:11:22,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:11:22,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:11:22,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:11:20" (1/3) ... [2023-11-06 23:11:22,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3028fa0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:22, skipping insertion in model container [2023-11-06 23:11:22,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:21" (2/3) ... [2023-11-06 23:11:22,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3028fa0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:22, skipping insertion in model container [2023-11-06 23:11:22,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:22" (3/3) ... [2023-11-06 23:11:22,680 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-06 23:11:22,690 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:11:22,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:11:22,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-06 23:11:22,704 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:11:22,953 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:11:23,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 624 places, 678 transitions, 1370 flow [2023-11-06 23:11:23,465 INFO L124 PetriNetUnfolderBase]: 61/676 cut-off events. [2023-11-06 23:11:23,465 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:11:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 676 events. 61/676 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2422 event pairs, 0 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 489. Up to 2 conditions per place. [2023-11-06 23:11:23,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 624 places, 678 transitions, 1370 flow [2023-11-06 23:11:23,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 602 places, 655 transitions, 1322 flow [2023-11-06 23:11:23,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:11:23,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 602 places, 655 transitions, 1322 flow [2023-11-06 23:11:23,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 602 places, 655 transitions, 1322 flow [2023-11-06 23:11:23,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 602 places, 655 transitions, 1322 flow [2023-11-06 23:11:23,801 INFO L124 PetriNetUnfolderBase]: 60/655 cut-off events. [2023-11-06 23:11:23,802 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:11:23,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 655 events. 60/655 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2307 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 489. Up to 2 conditions per place. [2023-11-06 23:11:23,876 INFO L119 LiptonReduction]: Number of co-enabled transitions 121412 [2023-11-06 23:12:17,963 INFO L134 LiptonReduction]: Checked pairs total: 119027 [2023-11-06 23:12:17,964 INFO L136 LiptonReduction]: Total number of compositions: 894 [2023-11-06 23:12:17,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:12:17,992 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c8ffb9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:12:17,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-06 23:12:17,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:12:17,996 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:12:17,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:12:17,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:17,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:12:17,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:18,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash 96082, now seen corresponding path program 1 times [2023-11-06 23:12:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:18,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051383705] [2023-11-06 23:12:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051383705] [2023-11-06 23:12:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051383705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:18,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:12:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770499508] [2023-11-06 23:12:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:18,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:18,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1572 [2023-11-06 23:12:18,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:18,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:18,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1572 [2023-11-06 23:12:18,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:19,244 INFO L124 PetriNetUnfolderBase]: 1397/2245 cut-off events. [2023-11-06 23:12:19,244 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-06 23:12:19,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 2245 events. 1397/2245 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11016 event pairs, 1131 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 4398. Up to 2243 conditions per place. [2023-11-06 23:12:19,268 INFO L140 encePairwiseOnDemand]: 1550/1572 looper letters, 60 selfloop transitions, 5 changer transitions 1/66 dead transitions. [2023-11-06 23:12:19,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 276 flow [2023-11-06 23:12:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1991 transitions. [2023-11-06 23:12:19,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42217981340118743 [2023-11-06 23:12:19,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1991 transitions. [2023-11-06 23:12:19,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1991 transitions. [2023-11-06 23:12:19,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:19,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1991 transitions. [2023-11-06 23:12:19,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 663.6666666666666) internal successors, (1991), 3 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:19,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:19,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:19,358 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 162 flow. Second operand 3 states and 1991 transitions. [2023-11-06 23:12:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 276 flow [2023-11-06 23:12:19,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:12:19,369 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 169 flow [2023-11-06 23:12:19,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-11-06 23:12:19,377 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-11-06 23:12:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 169 flow [2023-11-06 23:12:19,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:19,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:19,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:12:19,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:12:19,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:19,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2988565, now seen corresponding path program 1 times [2023-11-06 23:12:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:19,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282231890] [2023-11-06 23:12:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282231890] [2023-11-06 23:12:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282231890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382221242] [2023-11-06 23:12:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:19,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:19,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:12:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:19,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:12:19,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:19,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:12:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382221242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:12:19,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:12:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:12:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382073852] [2023-11-06 23:12:19,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:12:19,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:12:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:12:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:12:19,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1572 [2023-11-06 23:12:19,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 637.1428571428571) internal successors, (4460), 7 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:19,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:19,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1572 [2023-11-06 23:12:19,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:20,740 INFO L124 PetriNetUnfolderBase]: 1409/2262 cut-off events. [2023-11-06 23:12:20,741 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:20,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 2262 events. 1409/2262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11099 event pairs, 1131 based on Foata normal form. 0/949 useless extension candidates. Maximal degree in co-relation 4490. Up to 2243 conditions per place. [2023-11-06 23:12:20,760 INFO L140 encePairwiseOnDemand]: 1563/1572 looper letters, 58 selfloop transitions, 25 changer transitions 0/83 dead transitions. [2023-11-06 23:12:20,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 413 flow [2023-11-06 23:12:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:12:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:12:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4541 transitions. [2023-11-06 23:12:20,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126681206833879 [2023-11-06 23:12:20,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4541 transitions. [2023-11-06 23:12:20,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4541 transitions. [2023-11-06 23:12:20,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:20,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4541 transitions. [2023-11-06 23:12:20,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 648.7142857142857) internal successors, (4541), 7 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:20,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1572.0) internal successors, (12576), 8 states have internal predecessors, (12576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:20,897 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1572.0) internal successors, (12576), 8 states have internal predecessors, (12576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:20,898 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 169 flow. Second operand 7 states and 4541 transitions. [2023-11-06 23:12:20,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 413 flow [2023-11-06 23:12:20,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:12:20,903 INFO L231 Difference]: Finished difference. Result has 66 places, 83 transitions, 323 flow [2023-11-06 23:12:20,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=66, PETRI_TRANSITIONS=83} [2023-11-06 23:12:20,905 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-06 23:12:20,905 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 83 transitions, 323 flow [2023-11-06 23:12:20,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 637.1428571428571) internal successors, (4460), 7 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:20,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:20,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 23:12:20,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:12:21,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:21,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:21,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 92651666, now seen corresponding path program 1 times [2023-11-06 23:12:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213751479] [2023-11-06 23:12:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:12:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213751479] [2023-11-06 23:12:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213751479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:12:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455386021] [2023-11-06 23:12:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:21,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1572 [2023-11-06 23:12:21,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 83 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:21,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:21,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1572 [2023-11-06 23:12:21,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:22,004 INFO L124 PetriNetUnfolderBase]: 1403/2254 cut-off events. [2023-11-06 23:12:22,004 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 23:12:22,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2254 events. 1403/2254 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11119 event pairs, 1131 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 4539. Up to 2237 conditions per place. [2023-11-06 23:12:22,026 INFO L140 encePairwiseOnDemand]: 1568/1572 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-06 23:12:22,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 419 flow [2023-11-06 23:12:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1969 transitions. [2023-11-06 23:12:22,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175148430873622 [2023-11-06 23:12:22,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1969 transitions. [2023-11-06 23:12:22,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1969 transitions. [2023-11-06 23:12:22,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:22,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1969 transitions. [2023-11-06 23:12:22,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 656.3333333333334) internal successors, (1969), 3 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:22,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:22,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:22,067 INFO L175 Difference]: Start difference. First operand has 66 places, 83 transitions, 323 flow. Second operand 3 states and 1969 transitions. [2023-11-06 23:12:22,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 419 flow [2023-11-06 23:12:22,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 393 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:22,076 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 255 flow [2023-11-06 23:12:22,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-11-06 23:12:22,078 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-06 23:12:22,079 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 255 flow [2023-11-06 23:12:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:22,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:22,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:12:22,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:12:22,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:22,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1421474032, now seen corresponding path program 1 times [2023-11-06 23:12:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645165095] [2023-11-06 23:12:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645165095] [2023-11-06 23:12:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645165095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:22,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:12:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189058301] [2023-11-06 23:12:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:22,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 634 out of 1572 [2023-11-06 23:12:22,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:22,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:22,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 634 of 1572 [2023-11-06 23:12:22,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:22,951 INFO L124 PetriNetUnfolderBase]: 1401/2252 cut-off events. [2023-11-06 23:12:22,951 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:12:22,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 2252 events. 1401/2252 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11081 event pairs, 1131 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 4528. Up to 2248 conditions per place. [2023-11-06 23:12:22,971 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 66 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-11-06 23:12:22,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 390 flow [2023-11-06 23:12:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1965 transitions. [2023-11-06 23:12:22,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-06 23:12:22,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1965 transitions. [2023-11-06 23:12:22,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1965 transitions. [2023-11-06 23:12:22,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:22,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1965 transitions. [2023-11-06 23:12:22,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 655.0) internal successors, (1965), 3 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:23,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:23,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:23,027 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 255 flow. Second operand 3 states and 1965 transitions. [2023-11-06 23:12:23,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 390 flow [2023-11-06 23:12:23,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:12:23,032 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 248 flow [2023-11-06 23:12:23,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2023-11-06 23:12:23,033 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-06 23:12:23,033 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 248 flow [2023-11-06 23:12:23,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:23,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:23,037 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:12:23,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:12:23,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:23,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1155745205, now seen corresponding path program 2 times [2023-11-06 23:12:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:23,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736771752] [2023-11-06 23:12:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736771752] [2023-11-06 23:12:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736771752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269158627] [2023-11-06 23:12:23,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:12:23,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:23,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:23,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:23,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:12:23,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:12:23,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:12:23,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:12:23,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:12:23,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269158627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:12:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707915390] [2023-11-06 23:12:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:23,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 640 out of 1572 [2023-11-06 23:12:23,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 641.0) internal successors, (1923), 3 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:23,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:23,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 640 of 1572 [2023-11-06 23:12:23,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:23,982 INFO L124 PetriNetUnfolderBase]: 1401/2250 cut-off events. [2023-11-06 23:12:23,982 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 23:12:23,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 2250 events. 1401/2250 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11123 event pairs, 1131 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 4530. Up to 2236 conditions per place. [2023-11-06 23:12:23,999 INFO L140 encePairwiseOnDemand]: 1568/1572 looper letters, 66 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-11-06 23:12:23,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 370 flow [2023-11-06 23:12:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1979 transitions. [2023-11-06 23:12:24,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41963528413910095 [2023-11-06 23:12:24,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1979 transitions. [2023-11-06 23:12:24,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1979 transitions. [2023-11-06 23:12:24,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:24,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1979 transitions. [2023-11-06 23:12:24,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.6666666666666) internal successors, (1979), 3 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:24,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:24,027 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 248 flow. Second operand 3 states and 1979 transitions. [2023-11-06 23:12:24,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 370 flow [2023-11-06 23:12:24,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 325 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-06 23:12:24,031 INFO L231 Difference]: Finished difference. Result has 58 places, 71 transitions, 193 flow [2023-11-06 23:12:24,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=58, PETRI_TRANSITIONS=71} [2023-11-06 23:12:24,032 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -15 predicate places. [2023-11-06 23:12:24,032 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 71 transitions, 193 flow [2023-11-06 23:12:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 641.0) internal successors, (1923), 3 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:24,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:24,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:24,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:24,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:24,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1427899956, now seen corresponding path program 1 times [2023-11-06 23:12:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288381957] [2023-11-06 23:12:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:12:24,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288381957] [2023-11-06 23:12:24,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288381957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241643625] [2023-11-06 23:12:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:24,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:24,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:24,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:12:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:24,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:12:24,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:12:24,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:12:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:12:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241643625] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:12:24,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:12:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 23:12:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403110737] [2023-11-06 23:12:24,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:12:24,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:12:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:12:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:24,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 630 out of 1572 [2023-11-06 23:12:24,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 193 flow. Second operand has 8 states, 8 states have (on average 631.625) internal successors, (5053), 8 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:24,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:24,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 630 of 1572 [2023-11-06 23:12:24,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:25,337 INFO L124 PetriNetUnfolderBase]: 1395/2244 cut-off events. [2023-11-06 23:12:25,337 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:25,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 2244 events. 1395/2244 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11109 event pairs, 1131 based on Foata normal form. 3/948 useless extension candidates. Maximal degree in co-relation 4490. Up to 2237 conditions per place. [2023-11-06 23:12:25,360 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 55 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2023-11-06 23:12:25,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 293 flow [2023-11-06 23:12:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:12:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:12:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3851 transitions. [2023-11-06 23:12:25,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40829092451229854 [2023-11-06 23:12:25,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3851 transitions. [2023-11-06 23:12:25,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3851 transitions. [2023-11-06 23:12:25,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:25,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3851 transitions. [2023-11-06 23:12:25,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 641.8333333333334) internal successors, (3851), 6 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:25,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1572.0) internal successors, (11004), 7 states have internal predecessors, (11004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:25,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1572.0) internal successors, (11004), 7 states have internal predecessors, (11004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:25,410 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 193 flow. Second operand 6 states and 3851 transitions. [2023-11-06 23:12:25,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 293 flow [2023-11-06 23:12:25,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 289 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:12:25,415 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 179 flow [2023-11-06 23:12:25,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2023-11-06 23:12:25,419 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-06 23:12:25,419 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 179 flow [2023-11-06 23:12:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 631.625) internal successors, (5053), 8 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:25,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:25,421 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-11-06 23:12:25,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:25,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:25,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:25,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -595445425, now seen corresponding path program 2 times [2023-11-06 23:12:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651587564] [2023-11-06 23:12:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:12:25,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651587564] [2023-11-06 23:12:25,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651587564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447428781] [2023-11-06 23:12:25,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:12:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:25,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:12:25,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:12:25,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:12:25,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:12:25,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:12:25,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:25,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447428781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:12:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533712576] [2023-11-06 23:12:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:25,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:25,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:25,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:25,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:25,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:26,408 INFO L124 PetriNetUnfolderBase]: 1261/2026 cut-off events. [2023-11-06 23:12:26,408 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:26,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 2026 events. 1261/2026 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9615 event pairs, 1011 based on Foata normal form. 0/873 useless extension candidates. Maximal degree in co-relation 4059. Up to 2026 conditions per place. [2023-11-06 23:12:26,418 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-11-06 23:12:26,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 301 flow [2023-11-06 23:12:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1989 transitions. [2023-11-06 23:12:26,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217557251908397 [2023-11-06 23:12:26,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1989 transitions. [2023-11-06 23:12:26,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1989 transitions. [2023-11-06 23:12:26,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:26,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1989 transitions. [2023-11-06 23:12:26,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 663.0) internal successors, (1989), 3 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:26,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:26,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:26,445 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 179 flow. Second operand 3 states and 1989 transitions. [2023-11-06 23:12:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 301 flow [2023-11-06 23:12:26,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 281 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:12:26,447 INFO L231 Difference]: Finished difference. Result has 56 places, 63 transitions, 157 flow [2023-11-06 23:12:26,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2023-11-06 23:12:26,448 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-11-06 23:12:26,448 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 157 flow [2023-11-06 23:12:26,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:26,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:26,449 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-11-06 23:12:26,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 23:12:26,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 23:12:26,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:26,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash -595445427, now seen corresponding path program 1 times [2023-11-06 23:12:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954105272] [2023-11-06 23:12:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:12:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954105272] [2023-11-06 23:12:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954105272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990648109] [2023-11-06 23:12:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:26,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:26,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:26,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:26,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:12:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:26,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:12:26,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:12:27,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:12:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:12:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990648109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:12:27,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:12:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:12:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774735934] [2023-11-06 23:12:27,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:12:27,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:12:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:12:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:12:27,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 630 out of 1572 [2023-11-06 23:12:27,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 157 flow. Second operand has 13 states, 13 states have (on average 631.3846153846154) internal successors, (8208), 13 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:27,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:27,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 630 of 1572 [2023-11-06 23:12:27,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:27,865 INFO L124 PetriNetUnfolderBase]: 1261/2028 cut-off events. [2023-11-06 23:12:27,865 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:27,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 2028 events. 1261/2028 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9650 event pairs, 1011 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 4095. Up to 2019 conditions per place. [2023-11-06 23:12:27,876 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 53 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2023-11-06 23:12:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 295 flow [2023-11-06 23:12:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:12:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:12:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4477 transitions. [2023-11-06 23:12:27,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40685205379861866 [2023-11-06 23:12:27,894 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4477 transitions. [2023-11-06 23:12:27,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4477 transitions. [2023-11-06 23:12:27,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:27,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4477 transitions. [2023-11-06 23:12:27,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 639.5714285714286) internal successors, (4477), 7 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:27,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1572.0) internal successors, (12576), 8 states have internal predecessors, (12576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:27,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1572.0) internal successors, (12576), 8 states have internal predecessors, (12576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:27,937 INFO L175 Difference]: Start difference. First operand has 56 places, 63 transitions, 157 flow. Second operand 7 states and 4477 transitions. [2023-11-06 23:12:27,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 295 flow [2023-11-06 23:12:27,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:27,939 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 198 flow [2023-11-06 23:12:27,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-11-06 23:12:27,940 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-06 23:12:27,941 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 198 flow [2023-11-06 23:12:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 631.3846153846154) internal successors, (8208), 13 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:27,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:27,947 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-11-06 23:12:27,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:28,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 23:12:28,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:28,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash 716776771, now seen corresponding path program 1 times [2023-11-06 23:12:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613061355] [2023-11-06 23:12:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613061355] [2023-11-06 23:12:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613061355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:12:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230839355] [2023-11-06 23:12:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:28,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:28,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:28,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:28,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:28,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:28,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:28,650 INFO L124 PetriNetUnfolderBase]: 1133/1820 cut-off events. [2023-11-06 23:12:28,651 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:28,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1820 events. 1133/1820 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8391 event pairs, 897 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 3694. Up to 1820 conditions per place. [2023-11-06 23:12:28,657 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-11-06 23:12:28,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 320 flow [2023-11-06 23:12:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1987 transitions. [2023-11-06 23:12:28,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213316369804919 [2023-11-06 23:12:28,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1987 transitions. [2023-11-06 23:12:28,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1987 transitions. [2023-11-06 23:12:28,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:28,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1987 transitions. [2023-11-06 23:12:28,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 662.3333333333334) internal successors, (1987), 3 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,678 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 198 flow. Second operand 3 states and 1987 transitions. [2023-11-06 23:12:28,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 320 flow [2023-11-06 23:12:28,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 300 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 23:12:28,680 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 176 flow [2023-11-06 23:12:28,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-11-06 23:12:28,681 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -15 predicate places. [2023-11-06 23:12:28,681 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 176 flow [2023-11-06 23:12:28,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:28,682 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-11-06 23:12:28,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:12:28,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:28,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 716776845, now seen corresponding path program 1 times [2023-11-06 23:12:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642194615] [2023-11-06 23:12:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642194615] [2023-11-06 23:12:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642194615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:12:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109475471] [2023-11-06 23:12:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:28,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:28,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:28,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:28,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:29,165 INFO L124 PetriNetUnfolderBase]: 1011/1622 cut-off events. [2023-11-06 23:12:29,165 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:29,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1622 events. 1011/1622 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7278 event pairs, 789 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 3288. Up to 1622 conditions per place. [2023-11-06 23:12:29,173 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-11-06 23:12:29,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 294 flow [2023-11-06 23:12:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1985 transitions. [2023-11-06 23:12:29,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209075487701442 [2023-11-06 23:12:29,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1985 transitions. [2023-11-06 23:12:29,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1985 transitions. [2023-11-06 23:12:29,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:29,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1985 transitions. [2023-11-06 23:12:29,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.6666666666666) internal successors, (1985), 3 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,196 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 176 flow. Second operand 3 states and 1985 transitions. [2023-11-06 23:12:29,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 294 flow [2023-11-06 23:12:29,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:29,198 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 173 flow [2023-11-06 23:12:29,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-06 23:12:29,200 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-11-06 23:12:29,200 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 173 flow [2023-11-06 23:12:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:29,201 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-11-06 23:12:29,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:12:29,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:29,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash 716776842, now seen corresponding path program 2 times [2023-11-06 23:12:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482699551] [2023-11-06 23:12:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482699551] [2023-11-06 23:12:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482699551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:12:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951367751] [2023-11-06 23:12:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:29,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:29,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:29,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:29,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:29,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:29,688 INFO L124 PetriNetUnfolderBase]: 895/1434 cut-off events. [2023-11-06 23:12:29,688 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:29,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 1434 events. 895/1434 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6192 event pairs, 687 based on Foata normal form. 0/671 useless extension candidates. Maximal degree in co-relation 2911. Up to 1434 conditions per place. [2023-11-06 23:12:29,694 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-11-06 23:12:29,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 287 flow [2023-11-06 23:12:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1983 transitions. [2023-11-06 23:12:29,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42048346055979646 [2023-11-06 23:12:29,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1983 transitions. [2023-11-06 23:12:29,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1983 transitions. [2023-11-06 23:12:29,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:29,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1983 transitions. [2023-11-06 23:12:29,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,714 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 173 flow. Second operand 3 states and 1983 transitions. [2023-11-06 23:12:29,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 287 flow [2023-11-06 23:12:29,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:29,716 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 170 flow [2023-11-06 23:12:29,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-06 23:12:29,717 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-11-06 23:12:29,717 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 170 flow [2023-11-06 23:12:29,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:29,718 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:12:29,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:29,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 745245034, now seen corresponding path program 1 times [2023-11-06 23:12:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452881841] [2023-11-06 23:12:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452881841] [2023-11-06 23:12:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452881841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:12:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357472674] [2023-11-06 23:12:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:29,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:29,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:29,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 640.6666666666666) internal successors, (1922), 3 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:29,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:29,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:29,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:30,431 INFO L124 PetriNetUnfolderBase]: 1391/2214 cut-off events. [2023-11-06 23:12:30,431 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:12:30,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 2214 events. 1391/2214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9542 event pairs, 687 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 4483. Up to 1435 conditions per place. [2023-11-06 23:12:30,441 INFO L140 encePairwiseOnDemand]: 1560/1572 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-06 23:12:30,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 414 flow [2023-11-06 23:12:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2004 transitions. [2023-11-06 23:12:30,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42493638676844786 [2023-11-06 23:12:30,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2004 transitions. [2023-11-06 23:12:30,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2004 transitions. [2023-11-06 23:12:30,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:30,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2004 transitions. [2023-11-06 23:12:30,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 668.0) internal successors, (2004), 3 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:30,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:30,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:30,462 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 170 flow. Second operand 3 states and 2004 transitions. [2023-11-06 23:12:30,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 414 flow [2023-11-06 23:12:30,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:30,465 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 199 flow [2023-11-06 23:12:30,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-11-06 23:12:30,466 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -15 predicate places. [2023-11-06 23:12:30,466 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 199 flow [2023-11-06 23:12:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 640.6666666666666) internal successors, (1922), 3 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:12:30,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:30,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:30,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1084141390, now seen corresponding path program 1 times [2023-11-06 23:12:30,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:30,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900813749] [2023-11-06 23:12:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:30,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:30,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:30,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900813749] [2023-11-06 23:12:30,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900813749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:30,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:30,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:12:30,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318738535] [2023-11-06 23:12:30,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:30,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:30,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:30,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:30,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 641.3333333333334) internal successors, (1924), 3 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:30,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:30,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:30,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:31,279 INFO L124 PetriNetUnfolderBase]: 1637/2608 cut-off events. [2023-11-06 23:12:31,280 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-06 23:12:31,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 2608 events. 1637/2608 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12136 event pairs, 1065 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 5635. Up to 2215 conditions per place. [2023-11-06 23:12:31,292 INFO L140 encePairwiseOnDemand]: 1563/1572 looper letters, 91 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-06 23:12:31,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 480 flow [2023-11-06 23:12:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2002 transitions. [2023-11-06 23:12:31,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245122985581001 [2023-11-06 23:12:31,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2002 transitions. [2023-11-06 23:12:31,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2002 transitions. [2023-11-06 23:12:31,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:31,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2002 transitions. [2023-11-06 23:12:31,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.3333333333334) internal successors, (2002), 3 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:31,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:31,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:31,313 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 199 flow. Second operand 3 states and 2002 transitions. [2023-11-06 23:12:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 480 flow [2023-11-06 23:12:31,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:31,316 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 221 flow [2023-11-06 23:12:31,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-11-06 23:12:31,317 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-11-06 23:12:31,317 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 221 flow [2023-11-06 23:12:31,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 641.3333333333334) internal successors, (1924), 3 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:31,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:31,318 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:31,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:12:31,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:31,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash 751358812, now seen corresponding path program 1 times [2023-11-06 23:12:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690351012] [2023-11-06 23:12:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690351012] [2023-11-06 23:12:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690351012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808459748] [2023-11-06 23:12:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:31,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:31,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:31,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:12:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:31,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:12:31,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:31,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:31,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808459748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:31,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:31,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:12:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961931934] [2023-11-06 23:12:31,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:31,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:12:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:12:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:12:31,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:31,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 640.75) internal successors, (2563), 4 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:31,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:31,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:32,379 INFO L124 PetriNetUnfolderBase]: 1317/2140 cut-off events. [2023-11-06 23:12:32,380 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-11-06 23:12:32,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 2140 events. 1317/2140 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10176 event pairs, 209 based on Foata normal form. 0/1513 useless extension candidates. Maximal degree in co-relation 5213. Up to 1256 conditions per place. [2023-11-06 23:12:32,392 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 119 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-06 23:12:32,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 631 flow [2023-11-06 23:12:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:12:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:12:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2663 transitions. [2023-11-06 23:12:32,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235050890585242 [2023-11-06 23:12:32,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2663 transitions. [2023-11-06 23:12:32,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2663 transitions. [2023-11-06 23:12:32,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:32,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2663 transitions. [2023-11-06 23:12:32,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 665.75) internal successors, (2663), 4 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:32,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1572.0) internal successors, (7860), 5 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:32,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1572.0) internal successors, (7860), 5 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:32,415 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 221 flow. Second operand 4 states and 2663 transitions. [2023-11-06 23:12:32,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 631 flow [2023-11-06 23:12:32,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 121 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:32,419 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 211 flow [2023-11-06 23:12:32,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-11-06 23:12:32,420 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-11-06 23:12:32,420 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 211 flow [2023-11-06 23:12:32,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 640.75) internal successors, (2563), 4 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:32,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:32,421 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:32,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:12:32,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:32,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 751358834, now seen corresponding path program 1 times [2023-11-06 23:12:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81155278] [2023-11-06 23:12:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 23:12:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81155278] [2023-11-06 23:12:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81155278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:32,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:12:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241711550] [2023-11-06 23:12:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:32,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:32,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:32,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:32,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:32,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:33,245 INFO L124 PetriNetUnfolderBase]: 1165/1894 cut-off events. [2023-11-06 23:12:33,245 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-11-06 23:12:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 1894 events. 1165/1894 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8071 event pairs, 931 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 4658. Up to 1894 conditions per place. [2023-11-06 23:12:33,256 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-06 23:12:33,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 315 flow [2023-11-06 23:12:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1978 transitions. [2023-11-06 23:12:33,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41942324003392706 [2023-11-06 23:12:33,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1978 transitions. [2023-11-06 23:12:33,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1978 transitions. [2023-11-06 23:12:33,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:33,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1978 transitions. [2023-11-06 23:12:33,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.3333333333334) internal successors, (1978), 3 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:33,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:33,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:33,273 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 211 flow. Second operand 3 states and 1978 transitions. [2023-11-06 23:12:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 315 flow [2023-11-06 23:12:33,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:12:33,275 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 202 flow [2023-11-06 23:12:33,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-06 23:12:33,276 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-11-06 23:12:33,276 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 202 flow [2023-11-06 23:12:33,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:33,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:33,277 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:12:33,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:33,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash 751358836, now seen corresponding path program 1 times [2023-11-06 23:12:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657541339] [2023-11-06 23:12:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657541339] [2023-11-06 23:12:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657541339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646945248] [2023-11-06 23:12:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:33,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:33,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:33,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:33,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:12:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:33,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:12:33,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:33,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:12:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646945248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:12:33,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:12:33,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:12:33,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875320127] [2023-11-06 23:12:33,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:12:33,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:12:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:12:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:12:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:33,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:33,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:33,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:35,011 INFO L124 PetriNetUnfolderBase]: 1885/3046 cut-off events. [2023-11-06 23:12:35,011 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2023-11-06 23:12:35,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 3046 events. 1885/3046 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15025 event pairs, 723 based on Foata normal form. 0/2381 useless extension candidates. Maximal degree in co-relation 7250. Up to 1511 conditions per place. [2023-11-06 23:12:35,027 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 178 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2023-11-06 23:12:35,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 183 transitions, 928 flow [2023-11-06 23:12:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:12:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:12:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4005 transitions. [2023-11-06 23:12:35,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42461832061068705 [2023-11-06 23:12:35,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4005 transitions. [2023-11-06 23:12:35,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4005 transitions. [2023-11-06 23:12:35,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:35,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4005 transitions. [2023-11-06 23:12:35,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 667.5) internal successors, (4005), 6 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:35,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1572.0) internal successors, (11004), 7 states have internal predecessors, (11004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:35,056 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1572.0) internal successors, (11004), 7 states have internal predecessors, (11004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:35,056 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 202 flow. Second operand 6 states and 4005 transitions. [2023-11-06 23:12:35,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 183 transitions, 928 flow [2023-11-06 23:12:35,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 183 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:35,061 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 249 flow [2023-11-06 23:12:35,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-06 23:12:35,062 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-06 23:12:35,062 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 249 flow [2023-11-06 23:12:35,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:35,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:35,063 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:35,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:35,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:12:35,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:35,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1635053514, now seen corresponding path program 2 times [2023-11-06 23:12:35,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:35,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544487820] [2023-11-06 23:12:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:35,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544487820] [2023-11-06 23:12:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544487820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182153772] [2023-11-06 23:12:35,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:12:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:35,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:35,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:12:35,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:12:35,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:12:35,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:12:35,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:12:36,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182153772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:36,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:12:36,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474090992] [2023-11-06 23:12:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:36,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:36,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:36,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:36,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:36,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:36,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:36,714 INFO L124 PetriNetUnfolderBase]: 1721/2780 cut-off events. [2023-11-06 23:12:36,714 INFO L125 PetriNetUnfolderBase]: For 2001/2001 co-relation queries the response was YES. [2023-11-06 23:12:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 2780 events. 1721/2780 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12800 event pairs, 1409 based on Foata normal form. 0/2319 useless extension candidates. Maximal degree in co-relation 7623. Up to 2780 conditions per place. [2023-11-06 23:12:36,727 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-06 23:12:36,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 349 flow [2023-11-06 23:12:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1976 transitions. [2023-11-06 23:12:36,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41899915182357933 [2023-11-06 23:12:36,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1976 transitions. [2023-11-06 23:12:36,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1976 transitions. [2023-11-06 23:12:36,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:36,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1976 transitions. [2023-11-06 23:12:36,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.6666666666666) internal successors, (1976), 3 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:36,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:36,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:36,745 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 249 flow. Second operand 3 states and 1976 transitions. [2023-11-06 23:12:36,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 349 flow [2023-11-06 23:12:36,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 341 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:36,750 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 229 flow [2023-11-06 23:12:36,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-06 23:12:36,751 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-06 23:12:36,751 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 229 flow [2023-11-06 23:12:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:36,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:36,752 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:36,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 23:12:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:12:36,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:36,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1635053518, now seen corresponding path program 1 times [2023-11-06 23:12:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995044288] [2023-11-06 23:12:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:37,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995044288] [2023-11-06 23:12:37,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995044288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885705430] [2023-11-06 23:12:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:37,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:37,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:37,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:12:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:37,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:12:37,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:12:37,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885705430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:12:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307036244] [2023-11-06 23:12:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:37,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:37,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:37,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:37,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:38,208 INFO L124 PetriNetUnfolderBase]: 1563/2524 cut-off events. [2023-11-06 23:12:38,208 INFO L125 PetriNetUnfolderBase]: For 1401/1401 co-relation queries the response was YES. [2023-11-06 23:12:38,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 2524 events. 1563/2524 cut-off events. For 1401/1401 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11394 event pairs, 1269 based on Foata normal form. 0/2187 useless extension candidates. Maximal degree in co-relation 6468. Up to 2524 conditions per place. [2023-11-06 23:12:38,218 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-06 23:12:38,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 325 flow [2023-11-06 23:12:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1974 transitions. [2023-11-06 23:12:38,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41857506361323155 [2023-11-06 23:12:38,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1974 transitions. [2023-11-06 23:12:38,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1974 transitions. [2023-11-06 23:12:38,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:38,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1974 transitions. [2023-11-06 23:12:38,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.0) internal successors, (1974), 3 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:38,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:38,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:38,233 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 229 flow. Second operand 3 states and 1974 transitions. [2023-11-06 23:12:38,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 325 flow [2023-11-06 23:12:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:38,237 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 216 flow [2023-11-06 23:12:38,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-11-06 23:12:38,238 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-06 23:12:38,238 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 216 flow [2023-11-06 23:12:38,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:38,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:12:38,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:38,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1635053580, now seen corresponding path program 1 times [2023-11-06 23:12:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514788395] [2023-11-06 23:12:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514788395] [2023-11-06 23:12:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514788395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133283349] [2023-11-06 23:12:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:38,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:38,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:38,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:38,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:12:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:39,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:12:39,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:12:39,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133283349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:12:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77290104] [2023-11-06 23:12:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:12:39,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1572 [2023-11-06 23:12:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:39,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1572 [2023-11-06 23:12:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:39,712 INFO L124 PetriNetUnfolderBase]: 1411/2278 cut-off events. [2023-11-06 23:12:39,712 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2023-11-06 23:12:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5655 conditions, 2278 events. 1411/2278 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10027 event pairs, 1135 based on Foata normal form. 92/2057 useless extension candidates. Maximal degree in co-relation 5633. Up to 2278 conditions per place. [2023-11-06 23:12:39,721 INFO L140 encePairwiseOnDemand]: 1569/1572 looper letters, 48 selfloop transitions, 1 changer transitions 4/53 dead transitions. [2023-11-06 23:12:39,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 308 flow [2023-11-06 23:12:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1972 transitions. [2023-11-06 23:12:39,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181509754028838 [2023-11-06 23:12:39,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1972 transitions. [2023-11-06 23:12:39,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1972 transitions. [2023-11-06 23:12:39,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:39,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1972 transitions. [2023-11-06 23:12:39,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:39,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:39,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:39,738 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 216 flow. Second operand 3 states and 1972 transitions. [2023-11-06 23:12:39,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 308 flow [2023-11-06 23:12:39,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 297 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 23:12:39,741 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 184 flow [2023-11-06 23:12:39,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-06 23:12:39,742 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2023-11-06 23:12:39,742 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 184 flow [2023-11-06 23:12:39,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.6666666666666) internal successors, (1943), 3 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:39,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:39,743 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:39,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:39,950 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:39,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1075518216, now seen corresponding path program 1 times [2023-11-06 23:12:39,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218950767] [2023-11-06 23:12:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:40,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218950767] [2023-11-06 23:12:40,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218950767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425991027] [2023-11-06 23:12:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:40,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:40,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:12:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:40,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:12:40,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:40,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425991027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:12:40,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961852640] [2023-11-06 23:12:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:12:40,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:12:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:12:40,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:40,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 642.75) internal successors, (2571), 4 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:40,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:40,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:40,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:40,976 INFO L124 PetriNetUnfolderBase]: 1147/1836 cut-off events. [2023-11-06 23:12:40,976 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-11-06 23:12:40,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 1836 events. 1147/1836 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7544 event pairs, 11 based on Foata normal form. 0/1653 useless extension candidates. Maximal degree in co-relation 4238. Up to 1000 conditions per place. [2023-11-06 23:12:40,983 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 79 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-06 23:12:40,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 432 flow [2023-11-06 23:12:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:12:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:12:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2614 transitions. [2023-11-06 23:12:40,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157124681933842 [2023-11-06 23:12:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2614 transitions. [2023-11-06 23:12:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2614 transitions. [2023-11-06 23:12:40,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:40,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2614 transitions. [2023-11-06 23:12:40,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 653.5) internal successors, (2614), 4 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1572.0) internal successors, (7860), 5 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1572.0) internal successors, (7860), 5 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,004 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 184 flow. Second operand 4 states and 2614 transitions. [2023-11-06 23:12:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 432 flow [2023-11-06 23:12:41,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:41,007 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 175 flow [2023-11-06 23:12:41,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-06 23:12:41,008 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -20 predicate places. [2023-11-06 23:12:41,008 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 175 flow [2023-11-06 23:12:41,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 642.75) internal successors, (2571), 4 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:41,009 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:41,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:41,215 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:41,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1075518215, now seen corresponding path program 1 times [2023-11-06 23:12:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87756067] [2023-11-06 23:12:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:41,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87756067] [2023-11-06 23:12:41,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87756067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:41,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:41,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:12:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310330109] [2023-11-06 23:12:41,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:12:41,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:41,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 644.3333333333334) internal successors, (1933), 3 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:41,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:41,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:41,822 INFO L124 PetriNetUnfolderBase]: 1109/1772 cut-off events. [2023-11-06 23:12:41,823 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2023-11-06 23:12:41,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 1772 events. 1109/1772 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7218 event pairs, 875 based on Foata normal form. 26/1615 useless extension candidates. Maximal degree in co-relation 4121. Up to 1772 conditions per place. [2023-11-06 23:12:41,829 INFO L140 encePairwiseOnDemand]: 1570/1572 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 23:12:41,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 261 flow [2023-11-06 23:12:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1945 transitions. [2023-11-06 23:12:41,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124257845631891 [2023-11-06 23:12:41,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1945 transitions. [2023-11-06 23:12:41,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1945 transitions. [2023-11-06 23:12:41,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:41,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1945 transitions. [2023-11-06 23:12:41,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,844 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 175 flow. Second operand 3 states and 1945 transitions. [2023-11-06 23:12:41,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 261 flow [2023-11-06 23:12:41,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:12:41,846 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 170 flow [2023-11-06 23:12:41,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-06 23:12:41,847 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -21 predicate places. [2023-11-06 23:12:41,847 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 170 flow [2023-11-06 23:12:41,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 644.3333333333334) internal successors, (1933), 3 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:41,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:12:41,848 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:41,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 23:12:41,848 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-06 23:12:41,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1514236856, now seen corresponding path program 1 times [2023-11-06 23:12:41,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:41,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980205502] [2023-11-06 23:12:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:12:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980205502] [2023-11-06 23:12:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980205502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884541605] [2023-11-06 23:12:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:41,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:41,953 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:41,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:12:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:42,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:12:42,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 23:12:42,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884541605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 23:12:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060735475] [2023-11-06 23:12:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:12:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:12:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:12:42,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1572 [2023-11-06 23:12:42,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:42,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:12:42,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1572 [2023-11-06 23:12:42,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:12:42,687 INFO L124 PetriNetUnfolderBase]: 1033/1644 cut-off events. [2023-11-06 23:12:42,687 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-06 23:12:42,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1644 events. 1033/1644 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 6732 event pairs, 47 based on Foata normal form. 26/1513 useless extension candidates. Maximal degree in co-relation 3757. Up to 1500 conditions per place. [2023-11-06 23:12:42,690 INFO L140 encePairwiseOnDemand]: 1567/1572 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-11-06 23:12:42,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 310 flow [2023-11-06 23:12:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:12:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:12:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1952 transitions. [2023-11-06 23:12:42,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41391009329940626 [2023-11-06 23:12:42,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1952 transitions. [2023-11-06 23:12:42,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1952 transitions. [2023-11-06 23:12:42,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:12:42,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1952 transitions. [2023-11-06 23:12:42,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 650.6666666666666) internal successors, (1952), 3 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:42,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:42,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1572.0) internal successors, (6288), 4 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:42,701 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 170 flow. Second operand 3 states and 1952 transitions. [2023-11-06 23:12:42,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 310 flow [2023-11-06 23:12:42,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:12:42,702 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-11-06 23:12:42,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1572, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-11-06 23:12:42,703 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -22 predicate places. [2023-11-06 23:12:42,703 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-11-06 23:12:42,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:12:42,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2023-11-06 23:12:42,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2023-11-06 23:12:42,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2023-11-06 23:12:42,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2023-11-06 23:12:42,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2023-11-06 23:12:42,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2023-11-06 23:12:42,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2023-11-06 23:12:42,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2023-11-06 23:12:42,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2023-11-06 23:12:42,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2023-11-06 23:12:42,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2023-11-06 23:12:42,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2023-11-06 23:12:42,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2023-11-06 23:12:42,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2023-11-06 23:12:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2023-11-06 23:12:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2023-11-06 23:12:42,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2023-11-06 23:12:42,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2023-11-06 23:12:42,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2023-11-06 23:12:42,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2023-11-06 23:12:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2023-11-06 23:12:42,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2023-11-06 23:12:42,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2023-11-06 23:12:42,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2023-11-06 23:12:42,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2023-11-06 23:12:42,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:42,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:42,926 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:42,932 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:12:42,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:12:42,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:12:42 BasicIcfg [2023-11-06 23:12:42,937 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:12:42,937 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:12:42,938 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:12:42,938 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:12:42,938 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:22" (3/4) ... [2023-11-06 23:12:42,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:12:42,943 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:12:42,943 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:12:42,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 23:12:42,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:12:42,951 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:12:42,951 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:12:43,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:12:43,022 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:12:43,022 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:12:43,022 INFO L158 Benchmark]: Toolchain (without parser) took 82434.32ms. Allocated memory was 138.4MB in the beginning and 813.7MB in the end (delta: 675.3MB). Free memory was 93.4MB in the beginning and 676.8MB in the end (delta: -583.5MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,023 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:12:43,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.14ms. Allocated memory is still 138.4MB. Free memory was 93.0MB in the beginning and 79.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.78ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 75.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,024 INFO L158 Benchmark]: Boogie Preprocessor took 59.09ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 73.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,024 INFO L158 Benchmark]: RCFGBuilder took 1369.45ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 73.1MB in the beginning and 132.9MB in the end (delta: -59.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,025 INFO L158 Benchmark]: TraceAbstraction took 80269.79ms. Allocated memory was 192.9MB in the beginning and 813.7MB in the end (delta: 620.8MB). Free memory was 131.9MB in the beginning and 682.1MB in the end (delta: -550.2MB). Peak memory consumption was 475.5MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,025 INFO L158 Benchmark]: Witness Printer took 84.43ms. Allocated memory is still 813.7MB. Free memory was 682.1MB in the beginning and 676.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:12:43,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.14ms. Allocated memory is still 138.4MB. Free memory was 93.0MB in the beginning and 79.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.78ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 75.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.09ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 73.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1369.45ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 73.1MB in the beginning and 132.9MB in the end (delta: -59.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 80269.79ms. Allocated memory was 192.9MB in the beginning and 813.7MB in the end (delta: 620.8MB). Free memory was 131.9MB in the beginning and 682.1MB in the end (delta: -550.2MB). Peak memory consumption was 475.5MB. Max. memory is 16.1GB. * Witness Printer took 84.43ms. Allocated memory is still 813.7MB. Free memory was 682.1MB in the beginning and 676.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.4s, 602 PlacesBefore, 73 PlacesAfterwards, 655 TransitionsBefore, 75 TransitionsAfterwards, 121412 CoEnabledTransitionPairs, 9 FixpointIterations, 158 TrivialSequentialCompositions, 512 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 151 ConcurrentYvCompositions, 51 ChoiceCompositions, 894 TotalNumberOfCompositions, 119027 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 115951, independent: 115818, independent conditional: 0, independent unconditional: 115818, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 72675, independent: 72653, independent conditional: 0, independent unconditional: 72653, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 115951, independent: 43165, independent conditional: 0, independent unconditional: 43165, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 72675, unknown conditional: 0, unknown unconditional: 72675] , Statistics on independence cache: Total cache size (in pairs): 392, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: 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: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: 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 5 procedures, 1048 locations, 80 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: 79.9s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 55.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1690 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1173 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3476 IncrementalHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 86 mSDtfsCounter, 3476 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=2, InterpolantAutomatonStates: 82, 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: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 540 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 1260 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2491 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 38 InterpolantComputations, 18 PerfectInterpolantSequences, 782/882 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 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:12:43,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d63ca9-2d02-42d3-b795-7ee19e186e6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE