./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/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_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/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_fc9d9786-9aba-4d07-8bf4-6f5316233b39/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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:27:29,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:27:29,302 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:27:29,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:27:29,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:27:29,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:27:29,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:27:29,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:27:29,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:27:29,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:27:29,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:27:29,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:27:29,354 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:27:29,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:27:29,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:27:29,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:27:29,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:27:29,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:27:29,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:27:29,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:27:29,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:27:29,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:27:29,366 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:27:29,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:27:29,367 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:27:29,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:27:29,368 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:27:29,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:27:29,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:27:29,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:27:29,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:29,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:27:29,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:27:29,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:27:29,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:27:29,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:27:29,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:27:29,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:27:29,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:27:29,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:27:29,374 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:27:29,374 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_fc9d9786-9aba-4d07-8bf4-6f5316233b39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2023-11-06 22:27:29,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:27:29,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:27:29,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:27:29,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:27:29,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:27:29,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/stack-1.i [2023-11-06 22:27:33,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:27:33,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:27:33,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/sv-benchmarks/c/pthread/stack-1.i [2023-11-06 22:27:33,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/data/5c2bb76fe/7ea02e86f1b541d5a5bd0ddca2ea6677/FLAGe9d6adf92 [2023-11-06 22:27:33,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/data/5c2bb76fe/7ea02e86f1b541d5a5bd0ddca2ea6677 [2023-11-06 22:27:33,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:27:33,533 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:27:33,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:33,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:27:33,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:27:33,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:33" (1/1) ... [2023-11-06 22:27:33,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b215dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33, skipping insertion in model container [2023-11-06 22:27:33,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:33" (1/1) ... [2023-11-06 22:27:33,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:27:34,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:34,210 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:27:34,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:34,390 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:27:34,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34 WrapperNode [2023-11-06 22:27:34,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:34,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:34,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:27:34,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:27:34,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,486 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 166 [2023-11-06 22:27:34,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:34,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:27:34,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:27:34,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:27:34,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:27:34,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:27:34,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:27:34,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:27:34,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (1/1) ... [2023-11-06 22:27:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:34,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:27:34,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:27:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:27:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:27:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:27:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:27:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:27:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:27:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:27:34,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:27:34,651 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 22:27:34,816 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:27:34,821 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:27:35,263 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:27:35,275 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:27:35,275 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:27:35,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:35 BoogieIcfgContainer [2023-11-06 22:27:35,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:27:35,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:27:35,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:27:35,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:27:35,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:33" (1/3) ... [2023-11-06 22:27:35,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e8abc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:35, skipping insertion in model container [2023-11-06 22:27:35,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:34" (2/3) ... [2023-11-06 22:27:35,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e8abc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:35, skipping insertion in model container [2023-11-06 22:27:35,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:35" (3/3) ... [2023-11-06 22:27:35,297 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-11-06 22:27:35,310 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:27:35,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:27:35,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:27:35,325 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:27:35,512 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:27:35,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 187 transitions, 388 flow [2023-11-06 22:27:35,753 INFO L124 PetriNetUnfolderBase]: 12/185 cut-off events. [2023-11-06 22:27:35,753 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:35,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 12/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-06 22:27:35,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 187 transitions, 388 flow [2023-11-06 22:27:35,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 175 transitions, 359 flow [2023-11-06 22:27:35,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:27:35,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 175 transitions, 359 flow [2023-11-06 22:27:35,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 175 transitions, 359 flow [2023-11-06 22:27:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 359 flow [2023-11-06 22:27:35,899 INFO L124 PetriNetUnfolderBase]: 12/175 cut-off events. [2023-11-06 22:27:35,899 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:27:35,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 12/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 428 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2023-11-06 22:27:35,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 10672 [2023-11-06 22:27:41,826 INFO L134 LiptonReduction]: Checked pairs total: 14892 [2023-11-06 22:27:41,828 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-06 22:27:41,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:27:41,866 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;@2e11ffa1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:27:41,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:27:41,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:27:41,875 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-06 22:27:41,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:27:41,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:41,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:41,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:41,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -619665341, now seen corresponding path program 1 times [2023-11-06 22:27:41,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:41,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330693316] [2023-11-06 22:27:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:42,370 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 22:27:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330693316] [2023-11-06 22:27:42,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330693316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:42,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:42,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93299577] [2023-11-06 22:27:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:42,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:42,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-11-06 22:27:42,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 22:27:42,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:42,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-11-06 22:27:42,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:42,849 INFO L124 PetriNetUnfolderBase]: 1181/1928 cut-off events. [2023-11-06 22:27:42,849 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:27:42,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1928 events. 1181/1928 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8667 event pairs, 459 based on Foata normal form. 0/1317 useless extension candidates. Maximal degree in co-relation 3648. Up to 1295 conditions per place. [2023-11-06 22:27:42,873 INFO L140 encePairwiseOnDemand]: 356/363 looper letters, 60 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-06 22:27:42,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 269 flow [2023-11-06 22:27:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-11-06 22:27:42,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215794306703397 [2023-11-06 22:27:42,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-11-06 22:27:42,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-11-06 22:27:42,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:42,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-11-06 22:27:42,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 22:27:42,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:42,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:42,914 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 568 transitions. [2023-11-06 22:27:42,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 269 flow [2023-11-06 22:27:42,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:27:42,922 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-11-06 22:27:42,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-06 22:27:42,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-06 22:27:42,928 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-11-06 22:27:42,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 22:27:42,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:42,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:42,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:27:42,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:42,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 542669350, now seen corresponding path program 1 times [2023-11-06 22:27:42,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389611508] [2023-11-06 22:27:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:42,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:43,060 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 22:27:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389611508] [2023-11-06 22:27:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389611508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22079258] [2023-11-06 22:27:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:43,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:43,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:43,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-06 22:27:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:27:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-06 22:27:43,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:43,549 INFO L124 PetriNetUnfolderBase]: 1798/2993 cut-off events. [2023-11-06 22:27:43,550 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-06 22:27:43,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6346 conditions, 2993 events. 1798/2993 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15276 event pairs, 910 based on Foata normal form. 0/2373 useless extension candidates. Maximal degree in co-relation 6006. Up to 1870 conditions per place. [2023-11-06 22:27:43,578 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-06 22:27:43,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 330 flow [2023-11-06 22:27:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-11-06 22:27:43,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2023-11-06 22:27:43,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-11-06 22:27:43,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-11-06 22:27:43,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:43,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-11-06 22:27:43,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 22:27:43,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:43,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:43,596 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 583 transitions. [2023-11-06 22:27:43,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 330 flow [2023-11-06 22:27:43,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:43,608 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-11-06 22:27:43,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-06 22:27:43,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-06 22:27:43,610 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-11-06 22:27:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:27:43,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:43,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:27:43,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:43,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1665313666, now seen corresponding path program 1 times [2023-11-06 22:27:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736164987] [2023-11-06 22:27:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:43,775 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 22:27:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736164987] [2023-11-06 22:27:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736164987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335787619] [2023-11-06 22:27:43,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:43,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:43,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:43,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:43,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-06 22:27:43,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 22:27:43,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:43,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-06 22:27:43,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:44,376 INFO L124 PetriNetUnfolderBase]: 2246/3651 cut-off events. [2023-11-06 22:27:44,377 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-06 22:27:44,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 3651 events. 2246/3651 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20095 event pairs, 1026 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 6322. Up to 2950 conditions per place. [2023-11-06 22:27:44,413 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 68 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:27:44,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 338 flow [2023-11-06 22:27:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-11-06 22:27:44,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325987144168962 [2023-11-06 22:27:44,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-11-06 22:27:44,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-11-06 22:27:44,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:44,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-11-06 22:27:44,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 22:27:44,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:44,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:44,426 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 580 transitions. [2023-11-06 22:27:44,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 338 flow [2023-11-06 22:27:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:44,433 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-11-06 22:27:44,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-06 22:27:44,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-06 22:27:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-11-06 22:27:44,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 22:27:44,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:44,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:44,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:27:44,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:44,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash -230202494, now seen corresponding path program 1 times [2023-11-06 22:27:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451683212] [2023-11-06 22:27:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:44,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451683212] [2023-11-06 22:27:44,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451683212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:44,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:44,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:44,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470117208] [2023-11-06 22:27:44,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:44,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:44,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-06 22:27:44,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:27:44,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:44,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-06 22:27:44,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:45,092 INFO L124 PetriNetUnfolderBase]: 1976/3327 cut-off events. [2023-11-06 22:27:45,092 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2023-11-06 22:27:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3327 events. 1976/3327 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18118 event pairs, 305 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7372. Up to 2581 conditions per place. [2023-11-06 22:27:45,125 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 58 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-06 22:27:45,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 319 flow [2023-11-06 22:27:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2023-11-06 22:27:45,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188246097337006 [2023-11-06 22:27:45,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2023-11-06 22:27:45,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2023-11-06 22:27:45,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:45,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2023-11-06 22:27:45,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 22:27:45,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:45,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:45,137 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 565 transitions. [2023-11-06 22:27:45,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 319 flow [2023-11-06 22:27:45,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:45,145 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 142 flow [2023-11-06 22:27:45,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-06 22:27:45,147 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-06 22:27:45,148 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 142 flow [2023-11-06 22:27:45,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:27:45,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:45,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:27:45,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:45,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash -230202525, now seen corresponding path program 1 times [2023-11-06 22:27:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:45,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332763445] [2023-11-06 22:27:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:45,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:45,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332763445] [2023-11-06 22:27:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332763445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:45,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668303860] [2023-11-06 22:27:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:45,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:45,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:45,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-06 22:27:45,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 22:27:45,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:45,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-06 22:27:45,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:45,721 INFO L124 PetriNetUnfolderBase]: 1863/3136 cut-off events. [2023-11-06 22:27:45,722 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2023-11-06 22:27:45,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 3136 events. 1863/3136 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16893 event pairs, 95 based on Foata normal form. 78/2904 useless extension candidates. Maximal degree in co-relation 7260. Up to 2850 conditions per place. [2023-11-06 22:27:45,752 INFO L140 encePairwiseOnDemand]: 361/363 looper letters, 60 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-06 22:27:45,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 323 flow [2023-11-06 22:27:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-11-06 22:27:45,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519742883379247 [2023-11-06 22:27:45,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-11-06 22:27:45,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-11-06 22:27:45,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:45,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-11-06 22:27:45,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 22:27:45,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:45,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:45,764 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 142 flow. Second operand 3 states and 566 transitions. [2023-11-06 22:27:45,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 323 flow [2023-11-06 22:27:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:45,771 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 136 flow [2023-11-06 22:27:45,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-06 22:27:45,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-06 22:27:45,775 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 136 flow [2023-11-06 22:27:45,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 22:27:45,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:45,776 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:27:45,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:45,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1750232177, now seen corresponding path program 1 times [2023-11-06 22:27:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84494134] [2023-11-06 22:27:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:45,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:45,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84494134] [2023-11-06 22:27:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84494134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490235745] [2023-11-06 22:27:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:45,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:45,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:46,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:27:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:27:46,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:46,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490235745] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:46,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-06 22:27:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735788683] [2023-11-06 22:27:46,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:46,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:27:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:27:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:27:46,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-06 22:27:46,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 136 flow. Second operand has 10 states, 10 states have (on average 163.7) internal successors, (1637), 10 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 22:27:46,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:46,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-06 22:27:46,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:47,892 INFO L124 PetriNetUnfolderBase]: 4162/6891 cut-off events. [2023-11-06 22:27:47,892 INFO L125 PetriNetUnfolderBase]: For 2660/2660 co-relation queries the response was YES. [2023-11-06 22:27:47,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17099 conditions, 6891 events. 4162/6891 cut-off events. For 2660/2660 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39046 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16514. Up to 2039 conditions per place. [2023-11-06 22:27:47,953 INFO L140 encePairwiseOnDemand]: 351/363 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-11-06 22:27:47,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1360 flow [2023-11-06 22:27:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:27:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:27:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2483 transitions. [2023-11-06 22:27:47,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885871704053522 [2023-11-06 22:27:47,964 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2483 transitions. [2023-11-06 22:27:47,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2483 transitions. [2023-11-06 22:27:47,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:47,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2483 transitions. [2023-11-06 22:27:47,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 177.35714285714286) internal successors, (2483), 14 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 22:27:47,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states 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 22:27:47,991 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states 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 22:27:47,991 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 136 flow. Second operand 14 states and 2483 transitions. [2023-11-06 22:27:47,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1360 flow [2023-11-06 22:27:48,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:48,010 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-11-06 22:27:48,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-11-06 22:27:48,012 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-06 22:27:48,013 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-11-06 22:27:48,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.7) internal successors, (1637), 10 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states 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 22:27:48,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:48,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:48,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:48,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:48,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1088658518, now seen corresponding path program 1 times [2023-11-06 22:27:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450622076] [2023-11-06 22:27:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:48,363 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 22:27:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450622076] [2023-11-06 22:27:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450622076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138645499] [2023-11-06 22:27:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:48,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 363 [2023-11-06 22:27:48,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 22:27:48,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:48,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 363 [2023-11-06 22:27:48,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:48,916 INFO L124 PetriNetUnfolderBase]: 1972/3341 cut-off events. [2023-11-06 22:27:48,917 INFO L125 PetriNetUnfolderBase]: For 3435/3435 co-relation queries the response was YES. [2023-11-06 22:27:48,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 3341 events. 1972/3341 cut-off events. For 3435/3435 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17470 event pairs, 419 based on Foata normal form. 212/3301 useless extension candidates. Maximal degree in co-relation 9582. Up to 2429 conditions per place. [2023-11-06 22:27:48,945 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-06 22:27:48,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 532 flow [2023-11-06 22:27:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-11-06 22:27:48,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114784205693297 [2023-11-06 22:27:48,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-11-06 22:27:48,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-11-06 22:27:48,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:48,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-11-06 22:27:48,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 22:27:48,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:48,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:48,956 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 557 transitions. [2023-11-06 22:27:48,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 532 flow [2023-11-06 22:27:48,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-06 22:27:48,986 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-11-06 22:27:48,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-06 22:27:48,987 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-11-06 22:27:48,987 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-11-06 22:27:48,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 22:27:48,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:48,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:48,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:27:48,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:48,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1578919842, now seen corresponding path program 1 times [2023-11-06 22:27:48,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:48,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563137549] [2023-11-06 22:27:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:48,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563137549] [2023-11-06 22:27:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563137549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906898943] [2023-11-06 22:27:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:49,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:49,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:27:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:49,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:49,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:49,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:49,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906898943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 22:27:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031583815] [2023-11-06 22:27:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:49,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:27:49,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:49,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:27:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:27:49,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-06 22:27:49,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 22:27:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-06 22:27:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:50,016 INFO L124 PetriNetUnfolderBase]: 1801/3184 cut-off events. [2023-11-06 22:27:50,017 INFO L125 PetriNetUnfolderBase]: For 3013/3013 co-relation queries the response was YES. [2023-11-06 22:27:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15701 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-11-06 22:27:50,042 INFO L140 encePairwiseOnDemand]: 352/363 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-11-06 22:27:50,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-11-06 22:27:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:27:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:27:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1045 transitions. [2023-11-06 22:27:50,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2023-11-06 22:27:50,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1045 transitions. [2023-11-06 22:27:50,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1045 transitions. [2023-11-06 22:27:50,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:50,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1045 transitions. [2023-11-06 22:27:50,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states 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 22:27:50,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states 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 22:27:50,060 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states 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 22:27:50,061 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 1045 transitions. [2023-11-06 22:27:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-11-06 22:27:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:50,071 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-11-06 22:27:50,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-06 22:27:50,075 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-06 22:27:50,076 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-11-06 22:27:50,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 22:27:50,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:50,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:50,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:50,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:50,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 881502384, now seen corresponding path program 1 times [2023-11-06 22:27:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:50,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036088729] [2023-11-06 22:27:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:50,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:50,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036088729] [2023-11-06 22:27:50,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036088729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:50,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762873024] [2023-11-06 22:27:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:50,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:50,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:50,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:27:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:50,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:27:50,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:50,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:50,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762873024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:50,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:27:50,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824795726] [2023-11-06 22:27:50,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:50,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:50,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 363 [2023-11-06 22:27:50,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 22:27:50,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:50,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 363 [2023-11-06 22:27:50,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:51,090 INFO L124 PetriNetUnfolderBase]: 1623/2878 cut-off events. [2023-11-06 22:27:51,090 INFO L125 PetriNetUnfolderBase]: For 3860/3864 co-relation queries the response was YES. [2023-11-06 22:27:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9035 conditions, 2878 events. 1623/2878 cut-off events. For 3860/3864 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14050 event pairs, 171 based on Foata normal form. 4/2760 useless extension candidates. Maximal degree in co-relation 8538. Up to 2499 conditions per place. [2023-11-06 22:27:51,110 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 96 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-06 22:27:51,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 766 flow [2023-11-06 22:27:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-11-06 22:27:51,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144628099173554 [2023-11-06 22:27:51,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-11-06 22:27:51,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-11-06 22:27:51,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:51,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-11-06 22:27:51,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 22:27:51,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:51,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:51,123 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 4 states and 747 transitions. [2023-11-06 22:27:51,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 766 flow [2023-11-06 22:27:51,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 758 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:51,138 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 395 flow [2023-11-06 22:27:51,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-06 22:27:51,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-06 22:27:51,140 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 395 flow [2023-11-06 22:27:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 22:27:51,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:51,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:27:51,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:51,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:51,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:51,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 881502430, now seen corresponding path program 1 times [2023-11-06 22:27:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:51,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084580829] [2023-11-06 22:27:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084580829] [2023-11-06 22:27:51,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084580829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:51,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:51,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556670684] [2023-11-06 22:27:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:51,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:51,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-06 22:27:51,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 22:27:51,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:51,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-06 22:27:51,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:51,832 INFO L124 PetriNetUnfolderBase]: 1445/2588 cut-off events. [2023-11-06 22:27:51,832 INFO L125 PetriNetUnfolderBase]: For 3483/3487 co-relation queries the response was YES. [2023-11-06 22:27:51,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 2588 events. 1445/2588 cut-off events. For 3483/3487 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12323 event pairs, 505 based on Foata normal form. 4/2586 useless extension candidates. Maximal degree in co-relation 4734. Up to 1522 conditions per place. [2023-11-06 22:27:51,853 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 82 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-11-06 22:27:51,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 702 flow [2023-11-06 22:27:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-11-06 22:27:51,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512396694214876 [2023-11-06 22:27:51,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-11-06 22:27:51,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-11-06 22:27:51,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:51,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-11-06 22:27:51,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 22:27:51,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:51,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 22:27:51,865 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 395 flow. Second operand 3 states and 558 transitions. [2023-11-06 22:27:51,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 702 flow [2023-11-06 22:27:51,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:51,877 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-11-06 22:27:51,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-06 22:27:51,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-06 22:27:51,879 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-11-06 22:27:51,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 22:27:51,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:51,881 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:51,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:27:51,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:51,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1452294431, now seen corresponding path program 1 times [2023-11-06 22:27:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893670770] [2023-11-06 22:27:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893670770] [2023-11-06 22:27:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893670770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:52,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149841661] [2023-11-06 22:27:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:52,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 363 [2023-11-06 22:27:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 22:27:52,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:52,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 363 [2023-11-06 22:27:52,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:52,534 INFO L124 PetriNetUnfolderBase]: 1424/2553 cut-off events. [2023-11-06 22:27:52,534 INFO L125 PetriNetUnfolderBase]: For 4190/4190 co-relation queries the response was YES. [2023-11-06 22:27:52,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12106 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7750. Up to 2415 conditions per place. [2023-11-06 22:27:52,552 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-11-06 22:27:52,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 597 flow [2023-11-06 22:27:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2023-11-06 22:27:52,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140495867768596 [2023-11-06 22:27:52,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2023-11-06 22:27:52,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2023-11-06 22:27:52,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:52,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2023-11-06 22:27:52,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 22:27:52,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:52,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:52,565 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 699 transitions. [2023-11-06 22:27:52,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 597 flow [2023-11-06 22:27:52,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:52,577 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-11-06 22:27:52,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-06 22:27:52,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-06 22:27:52,578 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-11-06 22:27:52,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 22:27:52,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:52,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:52,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:27:52,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:52,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1570940173, now seen corresponding path program 1 times [2023-11-06 22:27:52,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339375701] [2023-11-06 22:27:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339375701] [2023-11-06 22:27:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339375701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086698886] [2023-11-06 22:27:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:52,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:52,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:52,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:27:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:53,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:27:53,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:53,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086698886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-06 22:27:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487832533] [2023-11-06 22:27:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:27:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:27:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:27:53,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 363 [2023-11-06 22:27:53,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 22:27:53,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:53,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 363 [2023-11-06 22:27:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:53,627 INFO L124 PetriNetUnfolderBase]: 1361/2424 cut-off events. [2023-11-06 22:27:53,627 INFO L125 PetriNetUnfolderBase]: For 4092/4092 co-relation queries the response was YES. [2023-11-06 22:27:53,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8223 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10941 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7506. Up to 1340 conditions per place. [2023-11-06 22:27:53,648 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-11-06 22:27:53,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 787 flow [2023-11-06 22:27:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:27:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:27:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2023-11-06 22:27:53,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719926538108356 [2023-11-06 22:27:53,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1028 transitions. [2023-11-06 22:27:53,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1028 transitions. [2023-11-06 22:27:53,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:53,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1028 transitions. [2023-11-06 22:27:53,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.33333333333334) internal successors, (1028), 6 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 22:27:53,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states 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 22:27:53,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states 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 22:27:53,670 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 1028 transitions. [2023-11-06 22:27:53,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 787 flow [2023-11-06 22:27:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 773 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:27:53,684 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-11-06 22:27:53,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-06 22:27:53,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-06 22:27:53,686 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-11-06 22:27:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 22:27:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:53,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:53,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:53,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:53,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1311665540, now seen corresponding path program 1 times [2023-11-06 22:27:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551433893] [2023-11-06 22:27:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:54,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551433893] [2023-11-06 22:27:54,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551433893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:54,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093903462] [2023-11-06 22:27:54,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:54,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:54,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 363 [2023-11-06 22:27:54,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 22:27:54,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:54,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 363 [2023-11-06 22:27:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:54,543 INFO L124 PetriNetUnfolderBase]: 1410/2523 cut-off events. [2023-11-06 22:27:54,543 INFO L125 PetriNetUnfolderBase]: For 4812/4812 co-relation queries the response was YES. [2023-11-06 22:27:54,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8813 conditions, 2523 events. 1410/2523 cut-off events. For 4812/4812 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11606 event pairs, 453 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8076. Up to 1388 conditions per place. [2023-11-06 22:27:54,559 INFO L140 encePairwiseOnDemand]: 354/363 looper letters, 74 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-06 22:27:54,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 848 flow [2023-11-06 22:27:54,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 706 transitions. [2023-11-06 22:27:54,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48622589531680444 [2023-11-06 22:27:54,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 706 transitions. [2023-11-06 22:27:54,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 706 transitions. [2023-11-06 22:27:54,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:54,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 706 transitions. [2023-11-06 22:27:54,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 22:27:54,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:54,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states 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 22:27:54,571 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 4 states and 706 transitions. [2023-11-06 22:27:54,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 848 flow [2023-11-06 22:27:54,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 839 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:54,584 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 621 flow [2023-11-06 22:27:54,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-06 22:27:54,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-06 22:27:54,586 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 621 flow [2023-11-06 22:27:54,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 22:27:54,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:54,587 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 22:27:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:27:54,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:54,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 231081393, now seen corresponding path program 1 times [2023-11-06 22:27:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660212079] [2023-11-06 22:27:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660212079] [2023-11-06 22:27:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660212079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:54,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162468866] [2023-11-06 22:27:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:54,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:54,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:54,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:27:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:55,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:27:55,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:55,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:55,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162468866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:55,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:55,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:27:55,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272634354] [2023-11-06 22:27:55,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:55,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:27:55,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:27:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:27:55,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 363 [2023-11-06 22:27:55,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 621 flow. Second operand has 18 states, 18 states have (on average 164.05555555555554) internal successors, (2953), 18 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states 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 22:27:55,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:55,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 363 [2023-11-06 22:27:55,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:56,895 INFO L124 PetriNetUnfolderBase]: 2450/4359 cut-off events. [2023-11-06 22:27:56,896 INFO L125 PetriNetUnfolderBase]: For 15358/15358 co-relation queries the response was YES. [2023-11-06 22:27:56,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15934 conditions, 4359 events. 2450/4359 cut-off events. For 15358/15358 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19542 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 14704. Up to 873 conditions per place. [2023-11-06 22:27:56,936 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-11-06 22:27:56,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 313 transitions, 2646 flow [2023-11-06 22:27:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:27:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:27:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3295 transitions. [2023-11-06 22:27:56,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777439466434682 [2023-11-06 22:27:56,956 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3295 transitions. [2023-11-06 22:27:56,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3295 transitions. [2023-11-06 22:27:56,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:56,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3295 transitions. [2023-11-06 22:27:56,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 173.42105263157896) internal successors, (3295), 19 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 22:27:56,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 363.0) internal successors, (7260), 20 states have internal predecessors, (7260), 0 states have call successors, (0), 0 states 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 22:27:57,001 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 363.0) internal successors, (7260), 20 states have internal predecessors, (7260), 0 states have call successors, (0), 0 states 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 22:27:57,001 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 621 flow. Second operand 19 states and 3295 transitions. [2023-11-06 22:27:57,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 313 transitions, 2646 flow [2023-11-06 22:27:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 313 transitions, 2644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:57,031 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 1259 flow [2023-11-06 22:27:57,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1259, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2023-11-06 22:27:57,032 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-11-06 22:27:57,033 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 1259 flow [2023-11-06 22:27:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.05555555555554) internal successors, (2953), 18 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states 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 22:27:57,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:57,034 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:57,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:27:57,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:57,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1796627395, now seen corresponding path program 2 times [2023-11-06 22:27:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545080167] [2023-11-06 22:27:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:27:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545080167] [2023-11-06 22:27:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545080167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132767666] [2023-11-06 22:27:57,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:57,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:57,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:27:57,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:27:57,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:57,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:27:57,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:27:57,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:27:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132767666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:57,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-11-06 22:27:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121882096] [2023-11-06 22:27:57,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:27:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:27:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:27:58,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-06 22:27:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 1259 flow. Second operand has 12 states, 12 states have (on average 159.5) internal successors, (1914), 12 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:27:58,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:58,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-06 22:27:58,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:59,337 INFO L124 PetriNetUnfolderBase]: 3069/5448 cut-off events. [2023-11-06 22:27:59,338 INFO L125 PetriNetUnfolderBase]: For 21978/21978 co-relation queries the response was YES. [2023-11-06 22:27:59,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21001 conditions, 5448 events. 3069/5448 cut-off events. For 21978/21978 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 26005 event pairs, 457 based on Foata normal form. 38/5486 useless extension candidates. Maximal degree in co-relation 19562. Up to 2471 conditions per place. [2023-11-06 22:27:59,391 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 181 selfloop transitions, 64 changer transitions 0/246 dead transitions. [2023-11-06 22:27:59,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 246 transitions, 2605 flow [2023-11-06 22:27:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:27:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:27:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2314 transitions. [2023-11-06 22:27:59,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45533254624163716 [2023-11-06 22:27:59,402 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2314 transitions. [2023-11-06 22:27:59,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2314 transitions. [2023-11-06 22:27:59,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:59,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2314 transitions. [2023-11-06 22:27:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 165.28571428571428) internal successors, (2314), 14 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states 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 22:27:59,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states 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 22:27:59,425 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 363.0) internal successors, (5445), 15 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states 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 22:27:59,425 INFO L175 Difference]: Start difference. First operand has 92 places, 105 transitions, 1259 flow. Second operand 14 states and 2314 transitions. [2023-11-06 22:27:59,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 246 transitions, 2605 flow [2023-11-06 22:27:59,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 246 transitions, 2447 flow, removed 54 selfloop flow, removed 7 redundant places. [2023-11-06 22:27:59,484 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1685 flow [2023-11-06 22:27:59,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1685, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2023-11-06 22:27:59,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2023-11-06 22:27:59,485 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1685 flow [2023-11-06 22:27:59,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.5) internal successors, (1914), 12 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:27:59,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:59,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:59,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:27:59,693 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:27:59,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1796627442, now seen corresponding path program 2 times [2023-11-06 22:27:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494131082] [2023-11-06 22:27:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494131082] [2023-11-06 22:27:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494131082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:27:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332495634] [2023-11-06 22:27:59,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:59,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:27:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:27:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:27:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-06 22:27:59,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1685 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 22:27:59,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:59,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-06 22:27:59,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:01,054 INFO L124 PetriNetUnfolderBase]: 2908/5229 cut-off events. [2023-11-06 22:28:01,054 INFO L125 PetriNetUnfolderBase]: For 22328/22328 co-relation queries the response was YES. [2023-11-06 22:28:01,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19975 conditions, 5229 events. 2908/5229 cut-off events. For 22328/22328 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 25135 event pairs, 438 based on Foata normal form. 96/5325 useless extension candidates. Maximal degree in co-relation 19683. Up to 3596 conditions per place. [2023-11-06 22:28:01,095 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 73 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2023-11-06 22:28:01,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 143 transitions, 1787 flow [2023-11-06 22:28:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:28:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:28:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1138 transitions. [2023-11-06 22:28:01,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478551751279024 [2023-11-06 22:28:01,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1138 transitions. [2023-11-06 22:28:01,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1138 transitions. [2023-11-06 22:28:01,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:01,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1138 transitions. [2023-11-06 22:28:01,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.57142857142858) internal successors, (1138), 7 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 22:28:01,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states 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 22:28:01,117 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states 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 22:28:01,117 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1685 flow. Second operand 7 states and 1138 transitions. [2023-11-06 22:28:01,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 143 transitions, 1787 flow [2023-11-06 22:28:01,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 1696 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-06 22:28:01,205 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 1408 flow [2023-11-06 22:28:01,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1408, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2023-11-06 22:28:01,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-11-06 22:28:01,206 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 1408 flow [2023-11-06 22:28:01,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 22:28:01,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:01,207 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:01,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:28:01,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:28:01,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1241219237, now seen corresponding path program 3 times [2023-11-06 22:28:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227276365] [2023-11-06 22:28:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:28:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227276365] [2023-11-06 22:28:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227276365] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043965649] [2023-11-06 22:28:01,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:28:01,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:01,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:01,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:28:01,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:28:01,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:28:01,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:28:01,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:28:01,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:28:02,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043965649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:02,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:28:02,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-06 22:28:02,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802802727] [2023-11-06 22:28:02,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:02,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:28:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:28:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:28:02,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-11-06 22:28:02,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 1408 flow. Second operand has 20 states, 20 states have (on average 158.9) internal successors, (3178), 20 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states 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 22:28:02,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:02,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-11-06 22:28:02,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:04,310 INFO L124 PetriNetUnfolderBase]: 3902/6991 cut-off events. [2023-11-06 22:28:04,310 INFO L125 PetriNetUnfolderBase]: For 29110/29110 co-relation queries the response was YES. [2023-11-06 22:28:04,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27003 conditions, 6991 events. 3902/6991 cut-off events. For 29110/29110 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 36012 event pairs, 477 based on Foata normal form. 64/7055 useless extension candidates. Maximal degree in co-relation 26157. Up to 1457 conditions per place. [2023-11-06 22:28:04,466 INFO L140 encePairwiseOnDemand]: 355/363 looper letters, 268 selfloop transitions, 112 changer transitions 0/381 dead transitions. [2023-11-06 22:28:04,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 381 transitions, 3883 flow [2023-11-06 22:28:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:28:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:28:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4268 transitions. [2023-11-06 22:28:04,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522144522144522 [2023-11-06 22:28:04,482 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4268 transitions. [2023-11-06 22:28:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4268 transitions. [2023-11-06 22:28:04,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:04,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4268 transitions. [2023-11-06 22:28:04,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 164.15384615384616) internal successors, (4268), 26 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states 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 22:28:04,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 363.0) internal successors, (9801), 27 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states 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 22:28:04,517 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 363.0) internal successors, (9801), 27 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states 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 22:28:04,518 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 1408 flow. Second operand 26 states and 4268 transitions. [2023-11-06 22:28:04,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 381 transitions, 3883 flow [2023-11-06 22:28:04,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 381 transitions, 3746 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 22:28:04,641 INFO L231 Difference]: Finished difference. Result has 133 places, 158 transitions, 2321 flow [2023-11-06 22:28:04,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2321, PETRI_PLACES=133, PETRI_TRANSITIONS=158} [2023-11-06 22:28:04,642 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-11-06 22:28:04,643 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 158 transitions, 2321 flow [2023-11-06 22:28:04,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 158.9) internal successors, (3178), 20 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states 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 22:28:04,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:04,644 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-11-06 22:28:04,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:28:04,852 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:28:04,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 307660793, now seen corresponding path program 2 times [2023-11-06 22:28:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905715155] [2023-11-06 22:28:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905715155] [2023-11-06 22:28:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905715155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193674366] [2023-11-06 22:28:05,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:28:05,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:05,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:05,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:28:05,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:28:05,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:28:05,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:28:05,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:28:05,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:28:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193674366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:28:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 23 [2023-11-06 22:28:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677534561] [2023-11-06 22:28:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:28:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:28:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:28:05,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-11-06 22:28:05,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 158 transitions, 2321 flow. Second operand has 8 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 22:28:05,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:05,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-11-06 22:28:05,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:07,651 INFO L124 PetriNetUnfolderBase]: 4693/8658 cut-off events. [2023-11-06 22:28:07,651 INFO L125 PetriNetUnfolderBase]: For 30404/30416 co-relation queries the response was YES. [2023-11-06 22:28:07,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33191 conditions, 8658 events. 4693/8658 cut-off events. For 30404/30416 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 51368 event pairs, 7 based on Foata normal form. 178/8836 useless extension candidates. Maximal degree in co-relation 33155. Up to 3205 conditions per place. [2023-11-06 22:28:07,694 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 0 selfloop transitions, 0 changer transitions 393/393 dead transitions. [2023-11-06 22:28:07,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 393 transitions, 5436 flow [2023-11-06 22:28:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:28:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:28:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1496 transitions. [2023-11-06 22:28:07,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-06 22:28:07,707 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1496 transitions. [2023-11-06 22:28:07,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1496 transitions. [2023-11-06 22:28:07,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:07,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1496 transitions. [2023-11-06 22:28:07,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 22:28:07,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states 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 22:28:07,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states 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 22:28:07,720 INFO L175 Difference]: Start difference. First operand has 133 places, 158 transitions, 2321 flow. Second operand 8 states and 1496 transitions. [2023-11-06 22:28:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 393 transitions, 5436 flow [2023-11-06 22:28:07,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 393 transitions, 4769 flow, removed 140 selfloop flow, removed 19 redundant places. [2023-11-06 22:28:07,855 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2023-11-06 22:28:07,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2023-11-06 22:28:07,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2023-11-06 22:28:07,856 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2023-11-06 22:28:07,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 22:28:07,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-06 22:28:07,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-06 22:28:07,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-06 22:28:07,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-06 22:28:07,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-06 22:28:07,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-06 22:28:07,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-06 22:28:07,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-06 22:28:07,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:28:08,069 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:08,074 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:28:08,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:28:08,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:08 BasicIcfg [2023-11-06 22:28:08,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:28:08,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:28:08,081 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:28:08,081 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:28:08,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:35" (3/4) ... [2023-11-06 22:28:08,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:28:08,088 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-06 22:28:08,088 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-06 22:28:08,094 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-06 22:28:08,094 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:28:08,094 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:28:08,094 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:28:08,152 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:28:08,152 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:28:08,152 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:28:08,153 INFO L158 Benchmark]: Toolchain (without parser) took 34620.51ms. Allocated memory was 186.6MB in the beginning and 941.6MB in the end (delta: 755.0MB). Free memory was 137.7MB in the beginning and 546.2MB in the end (delta: -408.5MB). Peak memory consumption was 348.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,153 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 186.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:28:08,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 857.48ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 108.3MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.15ms. Allocated memory is still 186.6MB. Free memory was 108.3MB in the beginning and 105.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,155 INFO L158 Benchmark]: Boogie Preprocessor took 57.38ms. Allocated memory is still 186.6MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,155 INFO L158 Benchmark]: RCFGBuilder took 733.61ms. Allocated memory is still 186.6MB. Free memory was 103.7MB in the beginning and 84.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,158 INFO L158 Benchmark]: TraceAbstraction took 32796.97ms. Allocated memory was 186.6MB in the beginning and 941.6MB in the end (delta: 755.0MB). Free memory was 84.4MB in the beginning and 549.9MB in the end (delta: -465.6MB). Peak memory consumption was 358.6MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,158 INFO L158 Benchmark]: Witness Printer took 71.91ms. Allocated memory is still 941.6MB. Free memory was 549.9MB in the beginning and 546.2MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:08,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 186.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 857.48ms. Allocated memory is still 186.6MB. Free memory was 137.7MB in the beginning and 108.3MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.15ms. Allocated memory is still 186.6MB. Free memory was 108.3MB in the beginning and 105.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.38ms. Allocated memory is still 186.6MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 733.61ms. Allocated memory is still 186.6MB. Free memory was 103.7MB in the beginning and 84.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32796.97ms. Allocated memory was 186.6MB in the beginning and 941.6MB in the end (delta: 755.0MB). Free memory was 84.4MB in the beginning and 549.9MB in the end (delta: -465.6MB). Peak memory consumption was 358.6MB. Max. memory is 16.1GB. * Witness Printer took 71.91ms. Allocated memory is still 941.6MB. Free memory was 549.9MB in the beginning and 546.2MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 170 PlacesBefore, 42 PlacesAfterwards, 175 TransitionsBefore, 40 TransitionsAfterwards, 10672 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 111 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 7 ChoiceCompositions, 176 TotalNumberOfCompositions, 14892 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11101, independent: 10874, independent conditional: 0, independent unconditional: 10874, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6279, independent: 6228, independent conditional: 0, independent unconditional: 6228, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11101, independent: 4646, independent conditional: 0, independent unconditional: 4646, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 6279, unknown conditional: 0, unknown unconditional: 6279] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 213, Positive conditional cache size: 0, Positive unconditional cache size: 213, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: 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, 300 locations, 18 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: 32.5s, OverallIterations: 18, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2248 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1911 mSDsluCounter, 804 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 703 mSDsCounter, 220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4507 IncrementalHoareTripleChecker+Invalid, 4727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 220 mSolverCounterUnsat, 101 mSDtfsCounter, 4507 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2321occurred in iteration=17, InterpolantAutomatonStates: 133, 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: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 694 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 797 ConstructedInterpolants, 0 QuantifiedInterpolants, 2151 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2387 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 312/872 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:28:08,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9d9786-9aba-4d07-8bf4-6f5316233b39/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