./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:45,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:45,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:03:45,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:45,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:45,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:45,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:45,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:45,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:45,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:45,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:45,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:45,423 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:45,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:45,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:45,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:45,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:45,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:45,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:45,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:45,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:45,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:45,429 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:45,431 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:45,432 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:45,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:45,433 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:45,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:45,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:45,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:45,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:45,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:45,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:45,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:45,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:45,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:45,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:45,445 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:45,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:45,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:45,445 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:45,446 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_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2023-11-19 08:03:45,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:45,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:45,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:45,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:45,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:45,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-19 08:03:49,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:49,371 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:49,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-19 08:03:49,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/data/3e093c5fe/2683a68e910e41a98407eb11520c9268/FLAGb3f4a3412 [2023-11-19 08:03:49,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/data/3e093c5fe/2683a68e910e41a98407eb11520c9268 [2023-11-19 08:03:49,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:49,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:49,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:49,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:49,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:49,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:49" (1/1) ... [2023-11-19 08:03:49,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2295369d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:49, skipping insertion in model container [2023-11-19 08:03:49,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:49" (1/1) ... [2023-11-19 08:03:49,562 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:50,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:50,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:50,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:50,540 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:50,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50 WrapperNode [2023-11-19 08:03:50,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:50,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:50,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:50,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:50,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,611 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-19 08:03:50,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:50,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:50,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:50,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:50,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:50,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:50,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:50,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:50,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (1/1) ... [2023-11-19 08:03:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:50,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:03:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:03:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:03:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:03:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:03:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:03:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:50,771 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:03:50,928 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:50,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:51,292 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:51,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:51,312 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:03:51,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:51 BoogieIcfgContainer [2023-11-19 08:03:51,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:51,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:51,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:51,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:49" (1/3) ... [2023-11-19 08:03:51,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:51, skipping insertion in model container [2023-11-19 08:03:51,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:50" (2/3) ... [2023-11-19 08:03:51,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:51, skipping insertion in model container [2023-11-19 08:03:51,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:51" (3/3) ... [2023-11-19 08:03:51,329 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-11-19 08:03:51,340 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:51,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:51,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:03:51,354 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:51,533 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:03:51,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 316 flow [2023-11-19 08:03:51,769 INFO L124 PetriNetUnfolderBase]: 11/149 cut-off events. [2023-11-19 08:03:51,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:03:51,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 11/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 89. Up to 3 conditions per place. [2023-11-19 08:03:51,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 316 flow [2023-11-19 08:03:51,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 128 transitions, 265 flow [2023-11-19 08:03:51,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:51,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 128 transitions, 265 flow [2023-11-19 08:03:51,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 128 transitions, 265 flow [2023-11-19 08:03:51,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 128 transitions, 265 flow [2023-11-19 08:03:51,904 INFO L124 PetriNetUnfolderBase]: 8/128 cut-off events. [2023-11-19 08:03:51,904 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:03:51,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 128 events. 8/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 08:03:51,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-11-19 08:04:00,087 INFO L134 LiptonReduction]: Checked pairs total: 6785 [2023-11-19 08:04:00,088 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-19 08:04:00,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:00,115 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2036b5e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:00,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 08:04:00,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:00,124 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-11-19 08:04:00,125 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:04:00,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:00,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:04:00,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:00,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:00,133 INFO L85 PathProgramCache]: Analyzing trace with hash -806279147, now seen corresponding path program 1 times [2023-11-19 08:04:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:00,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607194626] [2023-11-19 08:04:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607194626] [2023-11-19 08:04:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607194626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:00,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862086979] [2023-11-19 08:04:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:00,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:00,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 259 [2023-11-19 08:04:00,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:00,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:00,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 259 [2023-11-19 08:04:00,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:00,715 INFO L124 PetriNetUnfolderBase]: 345/594 cut-off events. [2023-11-19 08:04:00,716 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 08:04:00,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2562 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2023-11-19 08:04:00,725 INFO L140 encePairwiseOnDemand]: 258/259 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-19 08:04:00,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2023-11-19 08:04:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:04:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-19 08:04:00,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5965250965250966 [2023-11-19 08:04:00,745 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-19 08:04:00,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-19 08:04:00,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:00,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-19 08:04:00,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:00,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:00,769 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:00,771 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 309 transitions. [2023-11-19 08:04:00,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2023-11-19 08:04:00,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:00,778 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2023-11-19 08:04:00,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-11-19 08:04:00,786 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-11-19 08:04:00,786 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2023-11-19 08:04:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:00,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:00,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:00,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:00,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:00,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 775062110, now seen corresponding path program 1 times [2023-11-19 08:04:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463095797] [2023-11-19 08:04:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:01,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463095797] [2023-11-19 08:04:01,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463095797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:01,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:01,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:01,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548868998] [2023-11-19 08:04:01,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:01,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 259 [2023-11-19 08:04:01,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:01,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 259 [2023-11-19 08:04:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:01,401 INFO L124 PetriNetUnfolderBase]: 696/1187 cut-off events. [2023-11-19 08:04:01,401 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 08:04:01,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1187 events. 696/1187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5580 event pairs, 71 based on Foata normal form. 12/823 useless extension candidates. Maximal degree in co-relation 2329. Up to 797 conditions per place. [2023-11-19 08:04:01,414 INFO L140 encePairwiseOnDemand]: 248/259 looper letters, 68 selfloop transitions, 12 changer transitions 3/86 dead transitions. [2023-11-19 08:04:01,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 349 flow [2023-11-19 08:04:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-11-19 08:04:01,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566023166023166 [2023-11-19 08:04:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-11-19 08:04:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-11-19 08:04:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-11-19 08:04:01,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,433 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 733 transitions. [2023-11-19 08:04:01,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 349 flow [2023-11-19 08:04:01,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:01,437 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 174 flow [2023-11-19 08:04:01,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2023-11-19 08:04:01,439 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-11-19 08:04:01,439 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 174 flow [2023-11-19 08:04:01,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:01,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:01,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:04:01,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1742873985, now seen corresponding path program 1 times [2023-11-19 08:04:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489707515] [2023-11-19 08:04:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489707515] [2023-11-19 08:04:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489707515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732728569] [2023-11-19 08:04:01,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:01,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2023-11-19 08:04:01,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:01,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2023-11-19 08:04:01,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:01,858 INFO L124 PetriNetUnfolderBase]: 551/1048 cut-off events. [2023-11-19 08:04:01,859 INFO L125 PetriNetUnfolderBase]: For 324/332 co-relation queries the response was YES. [2023-11-19 08:04:01,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 1048 events. 551/1048 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5360 event pairs, 186 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 2617. Up to 748 conditions per place. [2023-11-19 08:04:01,873 INFO L140 encePairwiseOnDemand]: 254/259 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-11-19 08:04:01,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 340 flow [2023-11-19 08:04:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-19 08:04:01,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881595881595881 [2023-11-19 08:04:01,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-19 08:04:01,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-19 08:04:01,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:01,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-19 08:04:01,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,884 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 174 flow. Second operand 3 states and 457 transitions. [2023-11-19 08:04:01,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 340 flow [2023-11-19 08:04:01,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:01,891 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 209 flow [2023-11-19 08:04:01,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2023-11-19 08:04:01,892 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2023-11-19 08:04:01,893 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 209 flow [2023-11-19 08:04:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:01,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:01,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:04:01,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:01,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1249956112, now seen corresponding path program 1 times [2023-11-19 08:04:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405927205] [2023-11-19 08:04:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405927205] [2023-11-19 08:04:02,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405927205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487856997] [2023-11-19 08:04:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:02,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:02,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:02,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:02,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:02,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487856997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 08:04:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748424957] [2023-11-19 08:04:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:02,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:02,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:02,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 259 [2023-11-19 08:04:02,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 259 [2023-11-19 08:04:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:02,782 INFO L124 PetriNetUnfolderBase]: 935/1576 cut-off events. [2023-11-19 08:04:02,782 INFO L125 PetriNetUnfolderBase]: For 741/741 co-relation queries the response was YES. [2023-11-19 08:04:02,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 1576 events. 935/1576 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6743 event pairs, 169 based on Foata normal form. 44/1278 useless extension candidates. Maximal degree in co-relation 4257. Up to 657 conditions per place. [2023-11-19 08:04:02,801 INFO L140 encePairwiseOnDemand]: 245/259 looper letters, 90 selfloop transitions, 32 changer transitions 7/131 dead transitions. [2023-11-19 08:04:02,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 131 transitions, 744 flow [2023-11-19 08:04:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:04:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:04:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1024 transitions. [2023-11-19 08:04:02,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648097076668506 [2023-11-19 08:04:02,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1024 transitions. [2023-11-19 08:04:02,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1024 transitions. [2023-11-19 08:04:02,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:02,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1024 transitions. [2023-11-19 08:04:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,820 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,821 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 209 flow. Second operand 7 states and 1024 transitions. [2023-11-19 08:04:02,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 131 transitions, 744 flow [2023-11-19 08:04:02,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 131 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:02,829 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 434 flow [2023-11-19 08:04:02,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2023-11-19 08:04:02,831 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2023-11-19 08:04:02,831 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 434 flow [2023-11-19 08:04:02,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:02,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:02,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:04:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:03,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:03,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash 113603145, now seen corresponding path program 1 times [2023-11-19 08:04:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267824523] [2023-11-19 08:04:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:03,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267824523] [2023-11-19 08:04:03,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267824523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:03,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:03,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101281096] [2023-11-19 08:04:03,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:03,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:03,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 259 [2023-11-19 08:04:03,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 259 [2023-11-19 08:04:03,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:03,442 INFO L124 PetriNetUnfolderBase]: 346/737 cut-off events. [2023-11-19 08:04:03,442 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2023-11-19 08:04:03,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 737 events. 346/737 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3432 event pairs, 102 based on Foata normal form. 52/721 useless extension candidates. Maximal degree in co-relation 2065. Up to 388 conditions per place. [2023-11-19 08:04:03,450 INFO L140 encePairwiseOnDemand]: 247/259 looper letters, 30 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2023-11-19 08:04:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 358 flow [2023-11-19 08:04:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 08:04:03,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572715572715573 [2023-11-19 08:04:03,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 08:04:03,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 08:04:03,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:03,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 08:04:03,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,459 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 434 flow. Second operand 3 states and 433 transitions. [2023-11-19 08:04:03,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 358 flow [2023-11-19 08:04:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 325 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:03,467 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 240 flow [2023-11-19 08:04:03,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-19 08:04:03,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-11-19 08:04:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 240 flow [2023-11-19 08:04:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:03,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:04:03,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:03,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1681879977, now seen corresponding path program 1 times [2023-11-19 08:04:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074331729] [2023-11-19 08:04:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:03,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074331729] [2023-11-19 08:04:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074331729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:03,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:03,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524352359] [2023-11-19 08:04:03,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:03,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:03,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:03,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 259 [2023-11-19 08:04:03,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:03,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 259 [2023-11-19 08:04:03,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:03,961 INFO L124 PetriNetUnfolderBase]: 389/798 cut-off events. [2023-11-19 08:04:03,961 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-11-19 08:04:03,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 798 events. 389/798 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3563 event pairs, 79 based on Foata normal form. 12/766 useless extension candidates. Maximal degree in co-relation 2320. Up to 311 conditions per place. [2023-11-19 08:04:03,969 INFO L140 encePairwiseOnDemand]: 248/259 looper letters, 60 selfloop transitions, 12 changer transitions 6/80 dead transitions. [2023-11-19 08:04:03,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 504 flow [2023-11-19 08:04:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2023-11-19 08:04:03,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424710424710425 [2023-11-19 08:04:03,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2023-11-19 08:04:03,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2023-11-19 08:04:03,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:03,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2023-11-19 08:04:03,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,982 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 240 flow. Second operand 6 states and 843 transitions. [2023-11-19 08:04:03,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 504 flow [2023-11-19 08:04:03,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 470 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:03,987 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 267 flow [2023-11-19 08:04:03,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-11-19 08:04:03,988 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-11-19 08:04:03,988 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 267 flow [2023-11-19 08:04:03,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:03,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:03,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:03,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:04:03,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:03,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1420159960, now seen corresponding path program 1 times [2023-11-19 08:04:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386927187] [2023-11-19 08:04:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:04,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:04,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386927187] [2023-11-19 08:04:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386927187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185350375] [2023-11-19 08:04:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:04,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2023-11-19 08:04:04,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:04,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2023-11-19 08:04:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:04,247 INFO L124 PetriNetUnfolderBase]: 334/743 cut-off events. [2023-11-19 08:04:04,247 INFO L125 PetriNetUnfolderBase]: For 614/618 co-relation queries the response was YES. [2023-11-19 08:04:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 743 events. 334/743 cut-off events. For 614/618 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3497 event pairs, 190 based on Foata normal form. 18/709 useless extension candidates. Maximal degree in co-relation 2117. Up to 496 conditions per place. [2023-11-19 08:04:04,255 INFO L140 encePairwiseOnDemand]: 254/259 looper letters, 49 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-19 08:04:04,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 437 flow [2023-11-19 08:04:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-11-19 08:04:04,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5842985842985843 [2023-11-19 08:04:04,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-11-19 08:04:04,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-11-19 08:04:04,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:04,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-11-19 08:04:04,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,264 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 267 flow. Second operand 3 states and 454 transitions. [2023-11-19 08:04:04,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 437 flow [2023-11-19 08:04:04,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 415 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:04,269 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 266 flow [2023-11-19 08:04:04,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-19 08:04:04,270 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-11-19 08:04:04,270 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 266 flow [2023-11-19 08:04:04,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:04,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:04:04,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:04,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1979640370, now seen corresponding path program 1 times [2023-11-19 08:04:04,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:04,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971601845] [2023-11-19 08:04:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:04,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971601845] [2023-11-19 08:04:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971601845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216378673] [2023-11-19 08:04:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:04,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:04,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:04,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:04,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:04:04,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:04,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216378673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:04,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:04:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-11-19 08:04:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584916314] [2023-11-19 08:04:04,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:04:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:04:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:04:04,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 259 [2023-11-19 08:04:04,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 127.91666666666667) internal successors, (1535), 12 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:04,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 259 [2023-11-19 08:04:04,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:05,095 INFO L124 PetriNetUnfolderBase]: 410/869 cut-off events. [2023-11-19 08:04:05,096 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-19 08:04:05,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 869 events. 410/869 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3926 event pairs, 71 based on Foata normal form. 46/871 useless extension candidates. Maximal degree in co-relation 2527. Up to 357 conditions per place. [2023-11-19 08:04:05,105 INFO L140 encePairwiseOnDemand]: 240/259 looper letters, 54 selfloop transitions, 26 changer transitions 3/85 dead transitions. [2023-11-19 08:04:05,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 543 flow [2023-11-19 08:04:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:04:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1193 transitions. [2023-11-19 08:04:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117975117975118 [2023-11-19 08:04:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1193 transitions. [2023-11-19 08:04:05,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1193 transitions. [2023-11-19 08:04:05,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:05,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1193 transitions. [2023-11-19 08:04:05,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.55555555555554) internal successors, (1193), 9 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:05,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:05,124 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:05,125 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 266 flow. Second operand 9 states and 1193 transitions. [2023-11-19 08:04:05,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 543 flow [2023-11-19 08:04:05,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:05,130 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 319 flow [2023-11-19 08:04:05,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-11-19 08:04:05,132 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-11-19 08:04:05,132 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 319 flow [2023-11-19 08:04:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 127.91666666666667) internal successors, (1535), 12 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:05,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:05,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:05,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:05,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:05,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1738419613, now seen corresponding path program 1 times [2023-11-19 08:04:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757709107] [2023-11-19 08:04:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757709107] [2023-11-19 08:04:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757709107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:05,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:05,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345707245] [2023-11-19 08:04:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:04:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:04:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:05,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 259 [2023-11-19 08:04:05,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:05,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:05,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 259 [2023-11-19 08:04:05,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:06,080 INFO L124 PetriNetUnfolderBase]: 516/1079 cut-off events. [2023-11-19 08:04:06,081 INFO L125 PetriNetUnfolderBase]: For 980/980 co-relation queries the response was YES. [2023-11-19 08:04:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1079 events. 516/1079 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5140 event pairs, 105 based on Foata normal form. 20/1031 useless extension candidates. Maximal degree in co-relation 3572. Up to 391 conditions per place. [2023-11-19 08:04:06,094 INFO L140 encePairwiseOnDemand]: 244/259 looper letters, 77 selfloop transitions, 18 changer transitions 3/100 dead transitions. [2023-11-19 08:04:06,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 718 flow [2023-11-19 08:04:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:04:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1209 transitions. [2023-11-19 08:04:06,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186615186615187 [2023-11-19 08:04:06,101 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1209 transitions. [2023-11-19 08:04:06,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1209 transitions. [2023-11-19 08:04:06,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:06,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1209 transitions. [2023-11-19 08:04:06,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.33333333333334) internal successors, (1209), 9 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,116 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 319 flow. Second operand 9 states and 1209 transitions. [2023-11-19 08:04:06,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 718 flow [2023-11-19 08:04:06,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 100 transitions, 645 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-19 08:04:06,127 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 374 flow [2023-11-19 08:04:06,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-19 08:04:06,129 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 08:04:06,129 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 374 flow [2023-11-19 08:04:06,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:06,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:06,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:04:06,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:06,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash -116254522, now seen corresponding path program 1 times [2023-11-19 08:04:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618886379] [2023-11-19 08:04:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:06,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618886379] [2023-11-19 08:04:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618886379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:06,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:06,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412909412] [2023-11-19 08:04:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:06,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:06,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 259 [2023-11-19 08:04:06,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:06,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 259 [2023-11-19 08:04:06,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:06,474 INFO L124 PetriNetUnfolderBase]: 424/925 cut-off events. [2023-11-19 08:04:06,474 INFO L125 PetriNetUnfolderBase]: For 1067/1069 co-relation queries the response was YES. [2023-11-19 08:04:06,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 925 events. 424/925 cut-off events. For 1067/1069 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4392 event pairs, 190 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 2991. Up to 434 conditions per place. [2023-11-19 08:04:06,492 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 57 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2023-11-19 08:04:06,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 623 flow [2023-11-19 08:04:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 08:04:06,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574002574002574 [2023-11-19 08:04:06,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 08:04:06,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 08:04:06,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:06,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 08:04:06,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,503 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 374 flow. Second operand 3 states and 446 transitions. [2023-11-19 08:04:06,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 623 flow [2023-11-19 08:04:06,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:06,513 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 365 flow [2023-11-19 08:04:06,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-19 08:04:06,514 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-19 08:04:06,514 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 365 flow [2023-11-19 08:04:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:06,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:04:06,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:06,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1713572250, now seen corresponding path program 1 times [2023-11-19 08:04:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312919337] [2023-11-19 08:04:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312919337] [2023-11-19 08:04:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312919337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521728882] [2023-11-19 08:04:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:06,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:06,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:06,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:06,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:06,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521728882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:06,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:06,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 08:04:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797088674] [2023-11-19 08:04:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:06,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2023-11-19 08:04:06,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:06,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:06,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2023-11-19 08:04:06,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:07,110 INFO L124 PetriNetUnfolderBase]: 390/839 cut-off events. [2023-11-19 08:04:07,110 INFO L125 PetriNetUnfolderBase]: For 1129/1131 co-relation queries the response was YES. [2023-11-19 08:04:07,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 839 events. 390/839 cut-off events. For 1129/1131 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3758 event pairs, 84 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 2732. Up to 528 conditions per place. [2023-11-19 08:04:07,122 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 58 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-19 08:04:07,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 571 flow [2023-11-19 08:04:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-11-19 08:04:07,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-19 08:04:07,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-11-19 08:04:07,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-11-19 08:04:07,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:07,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-11-19 08:04:07,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,134 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 365 flow. Second operand 4 states and 592 transitions. [2023-11-19 08:04:07,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 571 flow [2023-11-19 08:04:07,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:07,142 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 344 flow [2023-11-19 08:04:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-11-19 08:04:07,143 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 08:04:07,143 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 344 flow [2023-11-19 08:04:07,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:07,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:07,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:04:07,369 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:07,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash -231278571, now seen corresponding path program 1 times [2023-11-19 08:04:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:07,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448690111] [2023-11-19 08:04:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:07,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:07,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448690111] [2023-11-19 08:04:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448690111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27705528] [2023-11-19 08:04:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:07,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:07,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:07,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:07,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:07,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:07,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:07,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27705528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:07,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:07,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 08:04:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974662768] [2023-11-19 08:04:07,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:07,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2023-11-19 08:04:07,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2023-11-19 08:04:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:07,809 INFO L124 PetriNetUnfolderBase]: 352/751 cut-off events. [2023-11-19 08:04:07,809 INFO L125 PetriNetUnfolderBase]: For 991/997 co-relation queries the response was YES. [2023-11-19 08:04:07,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 751 events. 352/751 cut-off events. For 991/997 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3186 event pairs, 114 based on Foata normal form. 14/747 useless extension candidates. Maximal degree in co-relation 2406. Up to 579 conditions per place. [2023-11-19 08:04:07,818 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 47 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-19 08:04:07,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 469 flow [2023-11-19 08:04:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-11-19 08:04:07,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627413127413128 [2023-11-19 08:04:07,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-11-19 08:04:07,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-11-19 08:04:07,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:07,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-11-19 08:04:07,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 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) [2023-11-19 08:04:07,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,827 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,827 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 344 flow. Second operand 4 states and 583 transitions. [2023-11-19 08:04:07,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 469 flow [2023-11-19 08:04:07,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:07,833 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 327 flow [2023-11-19 08:04:07,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-11-19 08:04:07,833 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 08:04:07,834 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 327 flow [2023-11-19 08:04:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:07,834 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:07,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:08,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:04:08,056 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:08,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:08,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1380163619, now seen corresponding path program 1 times [2023-11-19 08:04:08,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:08,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276307027] [2023-11-19 08:04:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:08,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276307027] [2023-11-19 08:04:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276307027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:08,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749272829] [2023-11-19 08:04:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:08,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 259 [2023-11-19 08:04:08,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:08,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 259 [2023-11-19 08:04:08,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:08,348 INFO L124 PetriNetUnfolderBase]: 321/672 cut-off events. [2023-11-19 08:04:08,348 INFO L125 PetriNetUnfolderBase]: For 984/986 co-relation queries the response was YES. [2023-11-19 08:04:08,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 672 events. 321/672 cut-off events. For 984/986 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2705 event pairs, 88 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 2114. Up to 393 conditions per place. [2023-11-19 08:04:08,356 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-11-19 08:04:08,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 454 flow [2023-11-19 08:04:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-19 08:04:08,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637065637065637 [2023-11-19 08:04:08,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-19 08:04:08,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-19 08:04:08,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:08,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-19 08:04:08,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,366 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 327 flow. Second operand 3 states and 438 transitions. [2023-11-19 08:04:08,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 454 flow [2023-11-19 08:04:08,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:08,372 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 324 flow [2023-11-19 08:04:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-19 08:04:08,373 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 08:04:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 324 flow [2023-11-19 08:04:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:04:08,375 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 931775953, now seen corresponding path program 2 times [2023-11-19 08:04:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089983876] [2023-11-19 08:04:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089983876] [2023-11-19 08:04:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089983876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360127726] [2023-11-19 08:04:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:08,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:08,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 259 [2023-11-19 08:04:08,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:08,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 259 [2023-11-19 08:04:08,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:08,809 INFO L124 PetriNetUnfolderBase]: 397/794 cut-off events. [2023-11-19 08:04:08,809 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2023-11-19 08:04:08,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 794 events. 397/794 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3092 event pairs, 83 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2658. Up to 292 conditions per place. [2023-11-19 08:04:08,818 INFO L140 encePairwiseOnDemand]: 251/259 looper letters, 58 selfloop transitions, 15 changer transitions 8/83 dead transitions. [2023-11-19 08:04:08,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 625 flow [2023-11-19 08:04:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2023-11-19 08:04:08,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386100386100386 [2023-11-19 08:04:08,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2023-11-19 08:04:08,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2023-11-19 08:04:08,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:08,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2023-11-19 08:04:08,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 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) [2023-11-19 08:04:08,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,835 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 324 flow. Second operand 6 states and 837 transitions. [2023-11-19 08:04:08,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 625 flow [2023-11-19 08:04:08,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:08,843 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 371 flow [2023-11-19 08:04:08,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-11-19 08:04:08,844 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-19 08:04:08,844 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 371 flow [2023-11-19 08:04:08,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:08,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:08,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:08,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:04:08,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:04:08,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash 8629663, now seen corresponding path program 3 times [2023-11-19 08:04:08,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:08,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489689556] [2023-11-19 08:04:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:09,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489689556] [2023-11-19 08:04:09,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489689556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881294857] [2023-11-19 08:04:09,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:04:09,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:09,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:09,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:09,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:09,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 08:04:09,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:09,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:04:09,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:09,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:09,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881294857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:09,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:09,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-19 08:04:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29939320] [2023-11-19 08:04:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:04:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:04:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:09,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 259 [2023-11-19 08:04:09,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:09,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:09,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 259 [2023-11-19 08:04:09,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:09,672 INFO L124 PetriNetUnfolderBase]: 317/648 cut-off events. [2023-11-19 08:04:09,672 INFO L125 PetriNetUnfolderBase]: For 1195/1195 co-relation queries the response was YES. [2023-11-19 08:04:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 648 events. 317/648 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2374 event pairs, 82 based on Foata normal form. 10/658 useless extension candidates. Maximal degree in co-relation 2273. Up to 237 conditions per place. [2023-11-19 08:04:09,678 INFO L140 encePairwiseOnDemand]: 250/259 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-11-19 08:04:09,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 575 flow [2023-11-19 08:04:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:04:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:04:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2023-11-19 08:04:09,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2023-11-19 08:04:09,684 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2023-11-19 08:04:09,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2023-11-19 08:04:09,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2023-11-19 08:04:09,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:09,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 259.0) internal successors, (2331), 9 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:09,696 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 259.0) internal successors, (2331), 9 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:09,696 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 371 flow. Second operand 8 states and 1056 transitions. [2023-11-19 08:04:09,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 575 flow [2023-11-19 08:04:09,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 545 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:04:09,703 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-11-19 08:04:09,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-11-19 08:04:09,704 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-19 08:04:09,705 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-11-19 08:04:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:09,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-19 08:04:09,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-19 08:04:09,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-19 08:04:09,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-19 08:04:09,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-19 08:04:09,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-19 08:04:09,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-19 08:04:09,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-19 08:04:09,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-19 08:04:09,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-19 08:04:09,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-19 08:04:09,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-19 08:04:09,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-19 08:04:09,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:04:09,928 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:09,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:04:09,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:09,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:09 BasicIcfg [2023-11-19 08:04:09,938 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:09,939 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:09,939 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:09,939 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:09,940 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:51" (3/4) ... [2023-11-19 08:04:09,941 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:04:09,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 08:04:09,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 08:04:09,953 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 08:04:09,953 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:04:09,954 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:04:09,954 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:04:10,060 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:04:10,061 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:04:10,061 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:10,062 INFO L158 Benchmark]: Toolchain (without parser) took 20618.08ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 93.4MB in the beginning and 230.3MB in the end (delta: -136.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,062 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:10,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1092.99ms. Allocated memory is still 157.3MB. Free memory was 93.1MB in the beginning and 108.5MB in the end (delta: -15.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.39ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,063 INFO L158 Benchmark]: Boogie Preprocessor took 47.79ms. Allocated memory is still 157.3MB. Free memory was 106.4MB in the beginning and 104.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,064 INFO L158 Benchmark]: RCFGBuilder took 656.95ms. Allocated memory is still 157.3MB. Free memory was 104.3MB in the beginning and 86.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,064 INFO L158 Benchmark]: TraceAbstraction took 18617.40ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 86.4MB in the beginning and 235.6MB in the end (delta: -149.1MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,064 INFO L158 Benchmark]: Witness Printer took 122.54ms. Allocated memory is still 297.8MB. Free memory was 235.6MB in the beginning and 230.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:04:10,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1092.99ms. Allocated memory is still 157.3MB. Free memory was 93.1MB in the beginning and 108.5MB in the end (delta: -15.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.39ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.79ms. Allocated memory is still 157.3MB. Free memory was 106.4MB in the beginning and 104.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 656.95ms. Allocated memory is still 157.3MB. Free memory was 104.3MB in the beginning and 86.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18617.40ms. Allocated memory was 157.3MB in the beginning and 297.8MB in the end (delta: 140.5MB). Free memory was 86.4MB in the beginning and 235.6MB in the end (delta: -149.1MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. * Witness Printer took 122.54ms. Allocated memory is still 297.8MB. Free memory was 235.6MB in the beginning and 230.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 127 PlacesBefore, 38 PlacesAfterwards, 128 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 6785 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3900, independent: 3685, independent conditional: 0, independent unconditional: 3685, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1697, independent: 1653, independent conditional: 0, independent unconditional: 1653, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3900, independent: 2032, independent conditional: 0, independent unconditional: 2032, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 1697, unknown conditional: 0, unknown unconditional: 1697] , Statistics on independence cache: Total cache size (in pairs): 188, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: 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, 202 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: 18.3s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1000 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 796 mSDsluCounter, 362 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1925 IncrementalHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 125 mSDtfsCounter, 1925 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=4, InterpolantAutomatonStates: 75, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 871 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1226 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 65/90 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! [2023-11-19 08:04:10,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_521d5f03-dbf2-414d-9c4d-da1b85dab0db/bin/uautomizer-verify-uCwYo4JHxu/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