./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:57,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:57,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:09:57,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:57,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:57,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:57,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:57,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:57,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:57,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:57,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:57,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:57,405 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:57,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:57,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:57,408 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:57,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:57,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:57,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:57,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:57,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:57,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:57,411 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:09:57,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:57,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:57,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:57,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:57,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:57,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:57,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:57,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:57,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:57,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:57,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:57,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:57,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:57,418 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:57,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:57,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:57,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:57,420 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:57,421 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_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2023-11-06 22:09:57,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:57,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:57,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:57,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:57,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:57,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 22:10:01,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:10:01,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:10:01,393 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 22:10:01,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/data/795d7af4c/fc825ef68f1d4d0893b6b54260987bea/FLAG0dd2c6a4f [2023-11-06 22:10:01,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/data/795d7af4c/fc825ef68f1d4d0893b6b54260987bea [2023-11-06 22:10:01,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:10:01,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:10:01,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:01,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:10:01,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:10:01,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afcb988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01, skipping insertion in model container [2023-11-06 22:10:01,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:10:01,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:01,767 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:10:01,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:01,820 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:10:01,820 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:10:01,828 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:10:01,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01 WrapperNode [2023-11-06 22:10:01,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:01,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:01,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:10:01,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:10:01,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,891 INFO L138 Inliner]: procedures = 28, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 441 [2023-11-06 22:10:01,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:01,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:10:01,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:10:01,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:10:01,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:10:01,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:10:01,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:10:01,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:10:01,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (1/1) ... [2023-11-06 22:10:01,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:01,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:01,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:02,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:10:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:10:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:10:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:10:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:10:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:10:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:10:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:10:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:02,041 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:10:02,180 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:02,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:02,957 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:03,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:03,289 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-06 22:10:03,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03 BoogieIcfgContainer [2023-11-06 22:10:03,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:03,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:03,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:03,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:03,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:01" (1/3) ... [2023-11-06 22:10:03,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb5f326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:03, skipping insertion in model container [2023-11-06 22:10:03,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:01" (2/3) ... [2023-11-06 22:10:03,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb5f326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:03, skipping insertion in model container [2023-11-06 22:10:03,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03" (3/3) ... [2023-11-06 22:10:03,307 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-11-06 22:10:03,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:03,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:03,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-06 22:10:03,333 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:03,491 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:10:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 440 places, 467 transitions, 955 flow [2023-11-06 22:10:03,717 INFO L124 PetriNetUnfolderBase]: 37/464 cut-off events. [2023-11-06 22:10:03,718 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:10:03,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 464 events. 37/464 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 375. Up to 2 conditions per place. [2023-11-06 22:10:03,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 440 places, 467 transitions, 955 flow [2023-11-06 22:10:03,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 440 transitions, 895 flow [2023-11-06 22:10:03,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:03,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 440 transitions, 895 flow [2023-11-06 22:10:03,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 440 transitions, 895 flow [2023-11-06 22:10:03,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 440 transitions, 895 flow [2023-11-06 22:10:03,914 INFO L124 PetriNetUnfolderBase]: 36/440 cut-off events. [2023-11-06 22:10:03,914 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:03,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 440 events. 36/440 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 569 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 375. Up to 2 conditions per place. [2023-11-06 22:10:03,927 INFO L119 LiptonReduction]: Number of co-enabled transitions 7238 [2023-11-06 22:10:24,408 INFO L134 LiptonReduction]: Checked pairs total: 8856 [2023-11-06 22:10:24,408 INFO L136 LiptonReduction]: Total number of compositions: 506 [2023-11-06 22:10:24,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:10:24,431 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40e5df3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:10:24,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-06 22:10:24,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:10:24,434 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:10:24,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:10:24,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:24,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:10:24,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:24,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:24,442 INFO L85 PathProgramCache]: Analyzing trace with hash 64252, now seen corresponding path program 1 times [2023-11-06 22:10:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386323611] [2023-11-06 22:10:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386323611] [2023-11-06 22:10:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386323611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:24,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:24,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898202215] [2023-11-06 22:10:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:24,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:25,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:10:25,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:25,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:10:25,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:25,444 INFO L124 PetriNetUnfolderBase]: 588/898 cut-off events. [2023-11-06 22:10:25,444 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-06 22:10:25,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 898 events. 588/898 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4085 event pairs, 445 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 1678. Up to 879 conditions per place. [2023-11-06 22:10:25,454 INFO L140 encePairwiseOnDemand]: 947/973 looper letters, 45 selfloop transitions, 12 changer transitions 2/61 dead transitions. [2023-11-06 22:10:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 255 flow [2023-11-06 22:10:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-11-06 22:10:25,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350805070229531 [2023-11-06 22:10:25,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-11-06 22:10:25,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-11-06 22:10:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:25,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-11-06 22:10:25,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,527 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 3 states and 1270 transitions. [2023-11-06 22:10:25,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 255 flow [2023-11-06 22:10:25,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 246 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:25,540 INFO L231 Difference]: Finished difference. Result has 51 places, 59 transitions, 207 flow [2023-11-06 22:10:25,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=59} [2023-11-06 22:10:25,548 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-06 22:10:25,548 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 59 transitions, 207 flow [2023-11-06 22:10:25,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 399.6666666666667) internal successors, (1199), 3 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:25,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:10:25,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:25,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1994498, now seen corresponding path program 1 times [2023-11-06 22:10:25,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518873034] [2023-11-06 22:10:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:25,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:25,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:25,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518873034] [2023-11-06 22:10:25,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518873034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:25,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:25,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:25,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222252127] [2023-11-06 22:10:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:25,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:10:25,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 59 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:25,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:25,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:10:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:26,061 INFO L124 PetriNetUnfolderBase]: 584/886 cut-off events. [2023-11-06 22:10:26,061 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:10:26,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 886 events. 584/886 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4059 event pairs, 443 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1795. Up to 855 conditions per place. [2023-11-06 22:10:26,070 INFO L140 encePairwiseOnDemand]: 963/973 looper letters, 43 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2023-11-06 22:10:26,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 297 flow [2023-11-06 22:10:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1244 transitions. [2023-11-06 22:10:26,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261733470366564 [2023-11-06 22:10:26,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1244 transitions. [2023-11-06 22:10:26,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1244 transitions. [2023-11-06 22:10:26,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:26,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1244 transitions. [2023-11-06 22:10:26,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:26,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:26,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:26,100 INFO L175 Difference]: Start difference. First operand has 51 places, 59 transitions, 207 flow. Second operand 3 states and 1244 transitions. [2023-11-06 22:10:26,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 297 flow [2023-11-06 22:10:26,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:26,111 INFO L231 Difference]: Finished difference. Result has 45 places, 55 transitions, 187 flow [2023-11-06 22:10:26,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=45, PETRI_TRANSITIONS=55} [2023-11-06 22:10:26,112 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2023-11-06 22:10:26,112 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 55 transitions, 187 flow [2023-11-06 22:10:26,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:26,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:26,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:26,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:10:26,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:26,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1994525, now seen corresponding path program 1 times [2023-11-06 22:10:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232679830] [2023-11-06 22:10:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:26,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232679830] [2023-11-06 22:10:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232679830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:26,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104033674] [2023-11-06 22:10:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:26,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:26,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:26,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:10:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:26,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:26,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104033674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:26,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:26,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 22:10:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713380358] [2023-11-06 22:10:26,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:10:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:10:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:10:26,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:10:26,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 55 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:26,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:26,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:10:26,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:27,029 INFO L124 PetriNetUnfolderBase]: 602/916 cut-off events. [2023-11-06 22:10:27,030 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:10:27,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 916 events. 602/916 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4130 event pairs, 443 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 1795. Up to 879 conditions per place. [2023-11-06 22:10:27,038 INFO L140 encePairwiseOnDemand]: 957/973 looper letters, 41 selfloop transitions, 42 changer transitions 0/85 dead transitions. [2023-11-06 22:10:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 497 flow [2023-11-06 22:10:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2489 transitions. [2023-11-06 22:10:27,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263446385748544 [2023-11-06 22:10:27,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2489 transitions. [2023-11-06 22:10:27,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2489 transitions. [2023-11-06 22:10:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:27,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2489 transitions. [2023-11-06 22:10:27,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 414.8333333333333) internal successors, (2489), 6 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,080 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,080 INFO L175 Difference]: Start difference. First operand has 45 places, 55 transitions, 187 flow. Second operand 6 states and 2489 transitions. [2023-11-06 22:10:27,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 497 flow [2023-11-06 22:10:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:27,087 INFO L231 Difference]: Finished difference. Result has 51 places, 85 transitions, 453 flow [2023-11-06 22:10:27,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=453, PETRI_PLACES=51, PETRI_TRANSITIONS=85} [2023-11-06 22:10:27,089 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-06 22:10:27,089 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 85 transitions, 453 flow [2023-11-06 22:10:27,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:27,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:10:27,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:27,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:27,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:27,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:27,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1918808045, now seen corresponding path program 1 times [2023-11-06 22:10:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338197280] [2023-11-06 22:10:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:27,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338197280] [2023-11-06 22:10:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338197280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:27,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:27,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:27,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364509985] [2023-11-06 22:10:27,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:27,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:27,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 85 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:27,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:27,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:27,724 INFO L124 PetriNetUnfolderBase]: 603/918 cut-off events. [2023-11-06 22:10:27,724 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:10:27,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 918 events. 603/918 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4165 event pairs, 443 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 1925. Up to 900 conditions per place. [2023-11-06 22:10:27,732 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 78 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-06 22:10:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 627 flow [2023-11-06 22:10:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1289 transitions. [2023-11-06 22:10:27,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415895854744776 [2023-11-06 22:10:27,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1289 transitions. [2023-11-06 22:10:27,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1289 transitions. [2023-11-06 22:10:27,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:27,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1289 transitions. [2023-11-06 22:10:27,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.6666666666667) internal successors, (1289), 3 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,756 INFO L175 Difference]: Start difference. First operand has 51 places, 85 transitions, 453 flow. Second operand 3 states and 1289 transitions. [2023-11-06 22:10:27,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 627 flow [2023-11-06 22:10:27,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 87 transitions, 561 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:27,768 INFO L231 Difference]: Finished difference. Result has 53 places, 87 transitions, 420 flow [2023-11-06 22:10:27,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=53, PETRI_TRANSITIONS=87} [2023-11-06 22:10:27,770 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2023-11-06 22:10:27,770 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 87 transitions, 420 flow [2023-11-06 22:10:27,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:27,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:27,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:10:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:10:27,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:27,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash -646489130, now seen corresponding path program 1 times [2023-11-06 22:10:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363579696] [2023-11-06 22:10:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363579696] [2023-11-06 22:10:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363579696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486073290] [2023-11-06 22:10:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:27,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:27,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:27,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:10:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:28,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:10:28,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:28,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486073290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:28,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-06 22:10:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456162187] [2023-11-06 22:10:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:10:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:10:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:28,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 973 [2023-11-06 22:10:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 87 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 388.2) internal successors, (1941), 5 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 973 [2023-11-06 22:10:28,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:28,873 INFO L124 PetriNetUnfolderBase]: 1103/1718 cut-off events. [2023-11-06 22:10:28,874 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 22:10:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 1718 events. 1103/1718 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9293 event pairs, 886 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 3599. Up to 899 conditions per place. [2023-11-06 22:10:28,891 INFO L140 encePairwiseOnDemand]: 960/973 looper letters, 122 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2023-11-06 22:10:28,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 143 transitions, 958 flow [2023-11-06 22:10:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2407 transitions. [2023-11-06 22:10:28,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41229873244261733 [2023-11-06 22:10:28,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2407 transitions. [2023-11-06 22:10:28,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2407 transitions. [2023-11-06 22:10:28,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:28,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2407 transitions. [2023-11-06 22:10:28,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 401.1666666666667) internal successors, (2407), 6 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:28,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:28,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:28,927 INFO L175 Difference]: Start difference. First operand has 53 places, 87 transitions, 420 flow. Second operand 6 states and 2407 transitions. [2023-11-06 22:10:28,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 143 transitions, 958 flow [2023-11-06 22:10:28,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 143 transitions, 943 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:28,934 INFO L231 Difference]: Finished difference. Result has 60 places, 99 transitions, 574 flow [2023-11-06 22:10:28,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=574, PETRI_PLACES=60, PETRI_TRANSITIONS=99} [2023-11-06 22:10:28,935 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-06 22:10:28,936 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 99 transitions, 574 flow [2023-11-06 22:10:28,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 388.2) internal successors, (1941), 5 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:28,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:28,937 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:10:28,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:10:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:29,143 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -708785001, now seen corresponding path program 2 times [2023-11-06 22:10:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265804359] [2023-11-06 22:10:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265804359] [2023-11-06 22:10:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265804359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836754453] [2023-11-06 22:10:29,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:29,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:29,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:29,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:29,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:10:29,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:29,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:29,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:29,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:10:29,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836754453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:29,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:29,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:10:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952299022] [2023-11-06 22:10:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:29,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 973 [2023-11-06 22:10:29,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 99 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 408.0) internal successors, (1224), 3 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:29,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:29,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 973 [2023-11-06 22:10:29,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:29,917 INFO L124 PetriNetUnfolderBase]: 1103/1717 cut-off events. [2023-11-06 22:10:29,917 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-06 22:10:29,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 1717 events. 1103/1717 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9305 event pairs, 886 based on Foata normal form. 1/1056 useless extension candidates. Maximal degree in co-relation 3721. Up to 1684 conditions per place. [2023-11-06 22:10:29,933 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 90 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-11-06 22:10:29,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 756 flow [2023-11-06 22:10:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-11-06 22:10:29,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43302500856457693 [2023-11-06 22:10:29,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-11-06 22:10:29,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-11-06 22:10:29,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:29,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-11-06 22:10:29,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:29,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:29,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:29,952 INFO L175 Difference]: Start difference. First operand has 60 places, 99 transitions, 574 flow. Second operand 3 states and 1264 transitions. [2023-11-06 22:10:29,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 756 flow [2023-11-06 22:10:29,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 746 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:29,958 INFO L231 Difference]: Finished difference. Result has 60 places, 98 transitions, 566 flow [2023-11-06 22:10:29,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=60, PETRI_TRANSITIONS=98} [2023-11-06 22:10:29,959 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-06 22:10:29,959 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 98 transitions, 566 flow [2023-11-06 22:10:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.0) internal successors, (1224), 3 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:29,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:29,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:29,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:30,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:30,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1494961659, now seen corresponding path program 1 times [2023-11-06 22:10:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094348163] [2023-11-06 22:10:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094348163] [2023-11-06 22:10:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094348163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:30,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982601082] [2023-11-06 22:10:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:30,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:30,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 98 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:30,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:30,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:30,774 INFO L124 PetriNetUnfolderBase]: 1115/1743 cut-off events. [2023-11-06 22:10:30,775 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-06 22:10:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 1743 events. 1115/1743 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9436 event pairs, 886 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 3975. Up to 1699 conditions per place. [2023-11-06 22:10:30,792 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 102 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2023-11-06 22:10:30,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 114 transitions, 896 flow [2023-11-06 22:10:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1291 transitions. [2023-11-06 22:10:30,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422747516272696 [2023-11-06 22:10:30,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1291 transitions. [2023-11-06 22:10:30,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1291 transitions. [2023-11-06 22:10:30,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:30,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1291 transitions. [2023-11-06 22:10:30,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:30,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:30,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:30,812 INFO L175 Difference]: Start difference. First operand has 60 places, 98 transitions, 566 flow. Second operand 3 states and 1291 transitions. [2023-11-06 22:10:30,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 114 transitions, 896 flow [2023-11-06 22:10:30,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:30,818 INFO L231 Difference]: Finished difference. Result has 61 places, 105 transitions, 661 flow [2023-11-06 22:10:30,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=661, PETRI_PLACES=61, PETRI_TRANSITIONS=105} [2023-11-06 22:10:30,820 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-06 22:10:30,821 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 105 transitions, 661 flow [2023-11-06 22:10:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:30,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:30,822 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:10:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:10:30,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:30,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1387255765, now seen corresponding path program 1 times [2023-11-06 22:10:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:30,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510225896] [2023-11-06 22:10:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:30,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510225896] [2023-11-06 22:10:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510225896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223140954] [2023-11-06 22:10:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:30,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:31,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:10:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:31,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:10:31,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:31,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223140954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:31,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:10:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123514389] [2023-11-06 22:10:31,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:31,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:10:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:10:31,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:10:31,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:10:31,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 105 transitions, 661 flow. Second operand has 13 states, 13 states have (on average 400.15384615384613) internal successors, (5202), 13 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:31,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:31,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:10:31,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:32,152 INFO L124 PetriNetUnfolderBase]: 1187/1863 cut-off events. [2023-11-06 22:10:32,153 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-06 22:10:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 1863 events. 1187/1863 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10125 event pairs, 886 based on Foata normal form. 42/1211 useless extension candidates. Maximal degree in co-relation 3816. Up to 1737 conditions per place. [2023-11-06 22:10:32,171 INFO L140 encePairwiseOnDemand]: 958/973 looper letters, 46 selfloop transitions, 129 changer transitions 0/177 dead transitions. [2023-11-06 22:10:32,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 177 transitions, 1551 flow [2023-11-06 22:10:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:10:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:10:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4948 transitions. [2023-11-06 22:10:32,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237752655018842 [2023-11-06 22:10:32,231 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4948 transitions. [2023-11-06 22:10:32,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4948 transitions. [2023-11-06 22:10:32,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:32,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4948 transitions. [2023-11-06 22:10:32,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 412.3333333333333) internal successors, (4948), 12 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:32,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 973.0) internal successors, (12649), 13 states have internal predecessors, (12649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:32,271 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 973.0) internal successors, (12649), 13 states have internal predecessors, (12649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:32,271 INFO L175 Difference]: Start difference. First operand has 61 places, 105 transitions, 661 flow. Second operand 12 states and 4948 transitions. [2023-11-06 22:10:32,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 177 transitions, 1551 flow [2023-11-06 22:10:32,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 177 transitions, 1535 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:32,281 INFO L231 Difference]: Finished difference. Result has 77 places, 177 transitions, 1595 flow [2023-11-06 22:10:32,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1595, PETRI_PLACES=77, PETRI_TRANSITIONS=177} [2023-11-06 22:10:32,282 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-11-06 22:10:32,282 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 177 transitions, 1595 flow [2023-11-06 22:10:32,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 400.15384615384613) internal successors, (5202), 13 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:32,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:32,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:32,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:32,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:10:32,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:32,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1388753171, now seen corresponding path program 1 times [2023-11-06 22:10:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053534839] [2023-11-06 22:10:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:32,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:32,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053534839] [2023-11-06 22:10:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053534839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120680328] [2023-11-06 22:10:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:32,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:32,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:32,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:32,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:10:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:32,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:32,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:32,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:32,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120680328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:32,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:10:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704690585] [2023-11-06 22:10:32,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:32,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:10:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:10:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:32,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:32,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 177 transitions, 1595 flow. Second operand has 7 states, 7 states have (on average 415.7142857142857) internal successors, (2910), 7 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:32,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:32,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:32,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:33,378 INFO L124 PetriNetUnfolderBase]: 1193/1872 cut-off events. [2023-11-06 22:10:33,379 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2023-11-06 22:10:33,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5054 conditions, 1872 events. 1193/1872 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10192 event pairs, 886 based on Foata normal form. 0/1185 useless extension candidates. Maximal degree in co-relation 4659. Up to 1816 conditions per place. [2023-11-06 22:10:33,400 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 149 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2023-11-06 22:10:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 186 transitions, 2005 flow [2023-11-06 22:10:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:10:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:10:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2954 transitions. [2023-11-06 22:10:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43371017471736895 [2023-11-06 22:10:33,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2954 transitions. [2023-11-06 22:10:33,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2954 transitions. [2023-11-06 22:10:33,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:33,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2954 transitions. [2023-11-06 22:10:33,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:33,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 973.0) internal successors, (7784), 8 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:33,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 973.0) internal successors, (7784), 8 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:33,438 INFO L175 Difference]: Start difference. First operand has 77 places, 177 transitions, 1595 flow. Second operand 7 states and 2954 transitions. [2023-11-06 22:10:33,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 186 transitions, 2005 flow [2023-11-06 22:10:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 186 transitions, 1607 flow, removed 130 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:33,456 INFO L231 Difference]: Finished difference. Result has 81 places, 186 transitions, 1331 flow [2023-11-06 22:10:33,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1331, PETRI_PLACES=81, PETRI_TRANSITIONS=186} [2023-11-06 22:10:33,458 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-06 22:10:33,458 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 186 transitions, 1331 flow [2023-11-06 22:10:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 415.7142857142857) internal successors, (2910), 7 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:33,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:33,460 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:33,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:10:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:10:33,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:33,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 101678928, now seen corresponding path program 1 times [2023-11-06 22:10:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552807967] [2023-11-06 22:10:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:33,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552807967] [2023-11-06 22:10:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552807967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:33,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461185683] [2023-11-06 22:10:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:33,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:33,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:33,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 186 transitions, 1331 flow. Second operand has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:33,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:33,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:34,294 INFO L124 PetriNetUnfolderBase]: 1190/1868 cut-off events. [2023-11-06 22:10:34,294 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2023-11-06 22:10:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 1868 events. 1190/1868 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10184 event pairs, 886 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 4703. Up to 1813 conditions per place. [2023-11-06 22:10:34,315 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 152 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2023-11-06 22:10:34,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 182 transitions, 1664 flow [2023-11-06 22:10:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1284 transitions. [2023-11-06 22:10:34,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398766700924974 [2023-11-06 22:10:34,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1284 transitions. [2023-11-06 22:10:34,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1284 transitions. [2023-11-06 22:10:34,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:34,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1284 transitions. [2023-11-06 22:10:34,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,333 INFO L175 Difference]: Start difference. First operand has 81 places, 186 transitions, 1331 flow. Second operand 3 states and 1284 transitions. [2023-11-06 22:10:34,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 182 transitions, 1664 flow [2023-11-06 22:10:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 182 transitions, 1621 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:34,347 INFO L231 Difference]: Finished difference. Result has 80 places, 182 transitions, 1317 flow [2023-11-06 22:10:34,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1317, PETRI_PLACES=80, PETRI_TRANSITIONS=182} [2023-11-06 22:10:34,348 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2023-11-06 22:10:34,348 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 182 transitions, 1317 flow [2023-11-06 22:10:34,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:34,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:10:34,349 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:34,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1494845970, now seen corresponding path program 1 times [2023-11-06 22:10:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553728390] [2023-11-06 22:10:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:34,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553728390] [2023-11-06 22:10:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553728390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:34,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050795342] [2023-11-06 22:10:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:34,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 973 [2023-11-06 22:10:34,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 182 transitions, 1317 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:34,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 973 [2023-11-06 22:10:34,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:35,010 INFO L124 PetriNetUnfolderBase]: 1788/2624 cut-off events. [2023-11-06 22:10:35,010 INFO L125 PetriNetUnfolderBase]: For 582/582 co-relation queries the response was YES. [2023-11-06 22:10:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 2624 events. 1788/2624 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13079 event pairs, 426 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 6259. Up to 2035 conditions per place. [2023-11-06 22:10:35,031 INFO L140 encePairwiseOnDemand]: 966/973 looper letters, 189 selfloop transitions, 2 changer transitions 3/196 dead transitions. [2023-11-06 22:10:35,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 196 transitions, 1739 flow [2023-11-06 22:10:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2023-11-06 22:10:35,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501541623843782 [2023-11-06 22:10:35,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2023-11-06 22:10:35,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2023-11-06 22:10:35,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:35,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2023-11-06 22:10:35,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,051 INFO L175 Difference]: Start difference. First operand has 80 places, 182 transitions, 1317 flow. Second operand 3 states and 1314 transitions. [2023-11-06 22:10:35,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 196 transitions, 1739 flow [2023-11-06 22:10:35,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 196 transitions, 1683 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:35,065 INFO L231 Difference]: Finished difference. Result has 81 places, 183 transitions, 1281 flow [2023-11-06 22:10:35,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1281, PETRI_PLACES=81, PETRI_TRANSITIONS=183} [2023-11-06 22:10:35,066 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-06 22:10:35,066 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 183 transitions, 1281 flow [2023-11-06 22:10:35,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:35,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:10:35,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:35,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1494845972, now seen corresponding path program 1 times [2023-11-06 22:10:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55857998] [2023-11-06 22:10:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:35,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55857998] [2023-11-06 22:10:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55857998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:35,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388793095] [2023-11-06 22:10:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:35,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:35,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:35,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 973 [2023-11-06 22:10:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 183 transitions, 1281 flow. Second operand has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:35,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 973 [2023-11-06 22:10:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:35,708 INFO L124 PetriNetUnfolderBase]: 1744/2610 cut-off events. [2023-11-06 22:10:35,709 INFO L125 PetriNetUnfolderBase]: For 721/723 co-relation queries the response was YES. [2023-11-06 22:10:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 2610 events. 1744/2610 cut-off events. For 721/723 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12664 event pairs, 478 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 7006. Up to 2035 conditions per place. [2023-11-06 22:10:35,737 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 188 selfloop transitions, 2 changer transitions 3/195 dead transitions. [2023-11-06 22:10:35,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 195 transitions, 1697 flow [2023-11-06 22:10:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1306 transitions. [2023-11-06 22:10:35,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44741349777321 [2023-11-06 22:10:35,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1306 transitions. [2023-11-06 22:10:35,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1306 transitions. [2023-11-06 22:10:35,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:35,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1306 transitions. [2023-11-06 22:10:35,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,757 INFO L175 Difference]: Start difference. First operand has 81 places, 183 transitions, 1281 flow. Second operand 3 states and 1306 transitions. [2023-11-06 22:10:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 195 transitions, 1697 flow [2023-11-06 22:10:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 195 transitions, 1695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:35,774 INFO L231 Difference]: Finished difference. Result has 83 places, 183 transitions, 1287 flow [2023-11-06 22:10:35,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1287, PETRI_PLACES=83, PETRI_TRANSITIONS=183} [2023-11-06 22:10:35,777 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-06 22:10:35,777 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 183 transitions, 1287 flow [2023-11-06 22:10:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:35,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:10:35,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:35,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1494845973, now seen corresponding path program 1 times [2023-11-06 22:10:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202968282] [2023-11-06 22:10:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:35,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:35,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:35,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202968282] [2023-11-06 22:10:35,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202968282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:35,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:35,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:35,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455925626] [2023-11-06 22:10:35,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:35,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:35,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:35,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:35,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 973 [2023-11-06 22:10:35,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 183 transitions, 1287 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:35,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:35,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 973 [2023-11-06 22:10:35,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:36,455 INFO L124 PetriNetUnfolderBase]: 1700/2476 cut-off events. [2023-11-06 22:10:36,455 INFO L125 PetriNetUnfolderBase]: For 781/927 co-relation queries the response was YES. [2023-11-06 22:10:36,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 2476 events. 1700/2476 cut-off events. For 781/927 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12050 event pairs, 346 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 6879. Up to 2035 conditions per place. [2023-11-06 22:10:36,475 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 187 selfloop transitions, 2 changer transitions 3/194 dead transitions. [2023-11-06 22:10:36,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 194 transitions, 1699 flow [2023-11-06 22:10:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1308 transitions. [2023-11-06 22:10:36,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44809866392600206 [2023-11-06 22:10:36,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1308 transitions. [2023-11-06 22:10:36,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1308 transitions. [2023-11-06 22:10:36,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:36,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1308 transitions. [2023-11-06 22:10:36,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.0) internal successors, (1308), 3 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:36,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:36,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:36,492 INFO L175 Difference]: Start difference. First operand has 83 places, 183 transitions, 1287 flow. Second operand 3 states and 1308 transitions. [2023-11-06 22:10:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 194 transitions, 1699 flow [2023-11-06 22:10:36,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 194 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:36,506 INFO L231 Difference]: Finished difference. Result has 84 places, 183 transitions, 1291 flow [2023-11-06 22:10:36,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1291, PETRI_PLACES=84, PETRI_TRANSITIONS=183} [2023-11-06 22:10:36,508 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2023-11-06 22:10:36,508 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 183 transitions, 1291 flow [2023-11-06 22:10:36,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:36,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:36,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:36,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:10:36,509 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:36,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:36,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2138786653, now seen corresponding path program 1 times [2023-11-06 22:10:36,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:36,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066414487] [2023-11-06 22:10:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:36,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:36,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066414487] [2023-11-06 22:10:36,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066414487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:36,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015352356] [2023-11-06 22:10:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:36,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:36,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:36,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:10:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:36,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:10:36,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:36,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:36,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015352356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:36,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 9 [2023-11-06 22:10:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528133139] [2023-11-06 22:10:36,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:36,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:10:36,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:10:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:37,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 973 [2023-11-06 22:10:37,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 183 transitions, 1291 flow. Second operand has 9 states, 9 states have (on average 382.22222222222223) internal successors, (3440), 9 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:37,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:37,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 973 [2023-11-06 22:10:37,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:38,153 INFO L124 PetriNetUnfolderBase]: 1770/2870 cut-off events. [2023-11-06 22:10:38,153 INFO L125 PetriNetUnfolderBase]: For 1125/1125 co-relation queries the response was YES. [2023-11-06 22:10:38,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8150 conditions, 2870 events. 1770/2870 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 17234 event pairs, 1388 based on Foata normal form. 156/2556 useless extension candidates. Maximal degree in co-relation 8098. Up to 1956 conditions per place. [2023-11-06 22:10:38,174 INFO L140 encePairwiseOnDemand]: 959/973 looper letters, 186 selfloop transitions, 82 changer transitions 3/273 dead transitions. [2023-11-06 22:10:38,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 273 transitions, 2448 flow [2023-11-06 22:10:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:10:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:10:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5417 transitions. [2023-11-06 22:10:38,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976655410365585 [2023-11-06 22:10:38,194 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5417 transitions. [2023-11-06 22:10:38,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5417 transitions. [2023-11-06 22:10:38,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:38,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5417 transitions. [2023-11-06 22:10:38,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 386.92857142857144) internal successors, (5417), 14 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:38,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 973.0) internal successors, (14595), 15 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:38,233 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 973.0) internal successors, (14595), 15 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:38,234 INFO L175 Difference]: Start difference. First operand has 84 places, 183 transitions, 1291 flow. Second operand 14 states and 5417 transitions. [2023-11-06 22:10:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 273 transitions, 2448 flow [2023-11-06 22:10:38,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 273 transitions, 2442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:38,251 INFO L231 Difference]: Finished difference. Result has 99 places, 233 transitions, 2056 flow [2023-11-06 22:10:38,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2056, PETRI_PLACES=99, PETRI_TRANSITIONS=233} [2023-11-06 22:10:38,252 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2023-11-06 22:10:38,253 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 233 transitions, 2056 flow [2023-11-06 22:10:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 382.22222222222223) internal successors, (3440), 9 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:38,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:38,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:38,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:38,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:38,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:38,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:38,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2139141914, now seen corresponding path program 1 times [2023-11-06 22:10:38,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745222722] [2023-11-06 22:10:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745222722] [2023-11-06 22:10:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745222722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:38,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740504956] [2023-11-06 22:10:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:38,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 233 transitions, 2056 flow. Second operand has 3 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:38,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:38,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:38,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:39,280 INFO L124 PetriNetUnfolderBase]: 1728/2828 cut-off events. [2023-11-06 22:10:39,280 INFO L125 PetriNetUnfolderBase]: For 1622/1622 co-relation queries the response was YES. [2023-11-06 22:10:39,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 2828 events. 1728/2828 cut-off events. For 1622/1622 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 17146 event pairs, 1388 based on Foata normal form. 48/2452 useless extension candidates. Maximal degree in co-relation 8389. Up to 2627 conditions per place. [2023-11-06 22:10:39,305 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 193 selfloop transitions, 10 changer transitions 0/205 dead transitions. [2023-11-06 22:10:39,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 205 transitions, 2156 flow [2023-11-06 22:10:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1283 transitions. [2023-11-06 22:10:39,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395340870161014 [2023-11-06 22:10:39,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1283 transitions. [2023-11-06 22:10:39,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1283 transitions. [2023-11-06 22:10:39,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:39,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1283 transitions. [2023-11-06 22:10:39,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:39,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:39,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:39,321 INFO L175 Difference]: Start difference. First operand has 99 places, 233 transitions, 2056 flow. Second operand 3 states and 1283 transitions. [2023-11-06 22:10:39,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 205 transitions, 2156 flow [2023-11-06 22:10:39,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 205 transitions, 2052 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:39,347 INFO L231 Difference]: Finished difference. Result has 98 places, 205 transitions, 1666 flow [2023-11-06 22:10:39,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1666, PETRI_PLACES=98, PETRI_TRANSITIONS=205} [2023-11-06 22:10:39,348 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2023-11-06 22:10:39,348 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 205 transitions, 1666 flow [2023-11-06 22:10:39,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:39,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:39,349 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:39,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:10:39,350 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:39,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1070682223, now seen corresponding path program 2 times [2023-11-06 22:10:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043907511] [2023-11-06 22:10:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:39,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:10:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043907511] [2023-11-06 22:10:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043907511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829826891] [2023-11-06 22:10:39,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:39,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:39,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:39,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:10:39,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:39,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:39,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:39,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:10:39,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829826891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-06 22:10:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778964068] [2023-11-06 22:10:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:39,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:39,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 205 transitions, 1666 flow. Second operand has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:39,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:39,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:40,413 INFO L124 PetriNetUnfolderBase]: 1728/2827 cut-off events. [2023-11-06 22:10:40,413 INFO L125 PetriNetUnfolderBase]: For 1459/1459 co-relation queries the response was YES. [2023-11-06 22:10:40,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 2827 events. 1728/2827 cut-off events. For 1459/1459 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 17202 event pairs, 1388 based on Foata normal form. 1/2404 useless extension candidates. Maximal degree in co-relation 8346. Up to 2780 conditions per place. [2023-11-06 22:10:40,435 INFO L140 encePairwiseOnDemand]: 969/973 looper letters, 173 selfloop transitions, 29 changer transitions 0/204 dead transitions. [2023-11-06 22:10:40,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 204 transitions, 2060 flow [2023-11-06 22:10:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1696 transitions. [2023-11-06 22:10:40,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357656731757451 [2023-11-06 22:10:40,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1696 transitions. [2023-11-06 22:10:40,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1696 transitions. [2023-11-06 22:10:40,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:40,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1696 transitions. [2023-11-06 22:10:40,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:40,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:40,457 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:40,458 INFO L175 Difference]: Start difference. First operand has 98 places, 205 transitions, 1666 flow. Second operand 4 states and 1696 transitions. [2023-11-06 22:10:40,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 204 transitions, 2060 flow [2023-11-06 22:10:40,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 204 transitions, 2002 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:10:40,484 INFO L231 Difference]: Finished difference. Result has 94 places, 204 transitions, 1656 flow [2023-11-06 22:10:40,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=94, PETRI_TRANSITIONS=204} [2023-11-06 22:10:40,485 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2023-11-06 22:10:40,485 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 204 transitions, 1656 flow [2023-11-06 22:10:40,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:40,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:40,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:40,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:40,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:40,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1877867346, now seen corresponding path program 1 times [2023-11-06 22:10:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845658661] [2023-11-06 22:10:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:40,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:40,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845658661] [2023-11-06 22:10:40,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845658661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:40,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044437264] [2023-11-06 22:10:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:40,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:40,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:40,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:10:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:41,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:10:41,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:41,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044437264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:41,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-06 22:10:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529456102] [2023-11-06 22:10:41,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:41,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:10:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:10:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:41,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 973 [2023-11-06 22:10:41,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 204 transitions, 1656 flow. Second operand has 9 states, 9 states have (on average 416.3333333333333) internal successors, (3747), 9 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:41,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:41,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 973 [2023-11-06 22:10:41,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:41,914 INFO L124 PetriNetUnfolderBase]: 1832/3051 cut-off events. [2023-11-06 22:10:41,914 INFO L125 PetriNetUnfolderBase]: For 1977/1977 co-relation queries the response was YES. [2023-11-06 22:10:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9624 conditions, 3051 events. 1832/3051 cut-off events. For 1977/1977 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18275 event pairs, 1388 based on Foata normal form. 0/2627 useless extension candidates. Maximal degree in co-relation 8921. Up to 2742 conditions per place. [2023-11-06 22:10:41,933 INFO L140 encePairwiseOnDemand]: 969/973 looper letters, 255 selfloop transitions, 95 changer transitions 0/352 dead transitions. [2023-11-06 22:10:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 352 transitions, 3618 flow [2023-11-06 22:10:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3385 transitions. [2023-11-06 22:10:41,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43486639260020554 [2023-11-06 22:10:41,944 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3385 transitions. [2023-11-06 22:10:41,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3385 transitions. [2023-11-06 22:10:41,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:41,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3385 transitions. [2023-11-06 22:10:41,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 423.125) internal successors, (3385), 8 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:41,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 973.0) internal successors, (8757), 9 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:41,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 973.0) internal successors, (8757), 9 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:41,961 INFO L175 Difference]: Start difference. First operand has 94 places, 204 transitions, 1656 flow. Second operand 8 states and 3385 transitions. [2023-11-06 22:10:41,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 352 transitions, 3618 flow [2023-11-06 22:10:41,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 352 transitions, 3560 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:41,998 INFO L231 Difference]: Finished difference. Result has 102 places, 264 transitions, 2618 flow [2023-11-06 22:10:41,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2618, PETRI_PLACES=102, PETRI_TRANSITIONS=264} [2023-11-06 22:10:41,999 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-11-06 22:10:42,000 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 264 transitions, 2618 flow [2023-11-06 22:10:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 416.3333333333333) internal successors, (3747), 9 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:42,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:42,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:42,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:10:42,207 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:42,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1548582297, now seen corresponding path program 1 times [2023-11-06 22:10:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700922871] [2023-11-06 22:10:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:42,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700922871] [2023-11-06 22:10:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700922871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:42,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:42,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342944214] [2023-11-06 22:10:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:42,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 973 [2023-11-06 22:10:42,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 264 transitions, 2618 flow. Second operand has 4 states, 4 states have (on average 395.75) internal successors, (1583), 4 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:42,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:42,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 973 [2023-11-06 22:10:42,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:43,488 INFO L124 PetriNetUnfolderBase]: 2206/3833 cut-off events. [2023-11-06 22:10:43,488 INFO L125 PetriNetUnfolderBase]: For 5036/5036 co-relation queries the response was YES. [2023-11-06 22:10:43,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13687 conditions, 3833 events. 2206/3833 cut-off events. For 5036/5036 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 23992 event pairs, 1528 based on Foata normal form. 68/3506 useless extension candidates. Maximal degree in co-relation 12212. Up to 3030 conditions per place. [2023-11-06 22:10:43,510 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 467 selfloop transitions, 3 changer transitions 19/491 dead transitions. [2023-11-06 22:10:43,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 491 transitions, 6008 flow [2023-11-06 22:10:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1640 transitions. [2023-11-06 22:10:43,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42137718396711205 [2023-11-06 22:10:43,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1640 transitions. [2023-11-06 22:10:43,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1640 transitions. [2023-11-06 22:10:43,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:43,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1640 transitions. [2023-11-06 22:10:43,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:43,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:43,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:43,526 INFO L175 Difference]: Start difference. First operand has 102 places, 264 transitions, 2618 flow. Second operand 4 states and 1640 transitions. [2023-11-06 22:10:43,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 491 transitions, 6008 flow [2023-11-06 22:10:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 491 transitions, 5532 flow, removed 186 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:43,607 INFO L231 Difference]: Finished difference. Result has 103 places, 264 transitions, 2391 flow [2023-11-06 22:10:43,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2391, PETRI_PLACES=103, PETRI_TRANSITIONS=264} [2023-11-06 22:10:43,608 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-11-06 22:10:43,608 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 264 transitions, 2391 flow [2023-11-06 22:10:43,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 395.75) internal successors, (1583), 4 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:43,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:43,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:43,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:10:43,609 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:43,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1966093601, now seen corresponding path program 1 times [2023-11-06 22:10:43,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:43,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108856242] [2023-11-06 22:10:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:43,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:43,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108856242] [2023-11-06 22:10:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108856242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:43,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:43,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:10:43,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035635416] [2023-11-06 22:10:43,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:43,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:43,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:43,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 973 [2023-11-06 22:10:43,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 264 transitions, 2391 flow. Second operand has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:43,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:43,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 973 [2023-11-06 22:10:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:45,010 INFO L124 PetriNetUnfolderBase]: 3312/5723 cut-off events. [2023-11-06 22:10:45,010 INFO L125 PetriNetUnfolderBase]: For 7514/7634 co-relation queries the response was YES. [2023-11-06 22:10:45,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21073 conditions, 5723 events. 3312/5723 cut-off events. For 7514/7634 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36521 event pairs, 1808 based on Foata normal form. 56/5072 useless extension candidates. Maximal degree in co-relation 18533. Up to 4196 conditions per place. [2023-11-06 22:10:45,046 INFO L140 encePairwiseOnDemand]: 969/973 looper letters, 397 selfloop transitions, 15 changer transitions 20/434 dead transitions. [2023-11-06 22:10:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 434 transitions, 4962 flow [2023-11-06 22:10:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1634 transitions. [2023-11-06 22:10:45,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198355601233299 [2023-11-06 22:10:45,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1634 transitions. [2023-11-06 22:10:45,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1634 transitions. [2023-11-06 22:10:45,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:45,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1634 transitions. [2023-11-06 22:10:45,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 408.5) internal successors, (1634), 4 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:45,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:45,061 INFO L175 Difference]: Start difference. First operand has 103 places, 264 transitions, 2391 flow. Second operand 4 states and 1634 transitions. [2023-11-06 22:10:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 434 transitions, 4962 flow [2023-11-06 22:10:45,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 434 transitions, 4956 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:45,188 INFO L231 Difference]: Finished difference. Result has 106 places, 264 transitions, 2419 flow [2023-11-06 22:10:45,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2419, PETRI_PLACES=106, PETRI_TRANSITIONS=264} [2023-11-06 22:10:45,189 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2023-11-06 22:10:45,189 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 264 transitions, 2419 flow [2023-11-06 22:10:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:45,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:45,190 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 22:10:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:10:45,190 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:45,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -892341003, now seen corresponding path program 2 times [2023-11-06 22:10:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:45,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817453318] [2023-11-06 22:10:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817453318] [2023-11-06 22:10:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817453318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075487032] [2023-11-06 22:10:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:45,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:45,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:45,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:10:45,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:45,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:45,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:45,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:10:45,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:45,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075487032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:45,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:45,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 22:10:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468864015] [2023-11-06 22:10:45,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:45,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:45,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:10:45,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 973 [2023-11-06 22:10:45,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 264 transitions, 2419 flow. Second operand has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:45,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:45,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 973 [2023-11-06 22:10:45,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:46,949 INFO L124 PetriNetUnfolderBase]: 3312/5721 cut-off events. [2023-11-06 22:10:46,949 INFO L125 PetriNetUnfolderBase]: For 7474/7594 co-relation queries the response was YES. [2023-11-06 22:10:46,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21131 conditions, 5721 events. 3312/5721 cut-off events. For 7474/7594 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 36709 event pairs, 1808 based on Foata normal form. 2/5018 useless extension candidates. Maximal degree in co-relation 18612. Up to 5596 conditions per place. [2023-11-06 22:10:46,982 INFO L140 encePairwiseOnDemand]: 970/973 looper letters, 249 selfloop transitions, 12 changer transitions 0/263 dead transitions. [2023-11-06 22:10:46,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 263 transitions, 2917 flow [2023-11-06 22:10:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1659 transitions. [2023-11-06 22:10:46,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262589928057554 [2023-11-06 22:10:46,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1659 transitions. [2023-11-06 22:10:46,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1659 transitions. [2023-11-06 22:10:46,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:46,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1659 transitions. [2023-11-06 22:10:46,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 414.75) internal successors, (1659), 4 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:46,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:46,996 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:46,996 INFO L175 Difference]: Start difference. First operand has 106 places, 264 transitions, 2419 flow. Second operand 4 states and 1659 transitions. [2023-11-06 22:10:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 263 transitions, 2917 flow [2023-11-06 22:10:47,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 263 transitions, 2827 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:47,079 INFO L231 Difference]: Finished difference. Result has 106 places, 263 transitions, 2329 flow [2023-11-06 22:10:47,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2329, PETRI_PLACES=106, PETRI_TRANSITIONS=263} [2023-11-06 22:10:47,080 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2023-11-06 22:10:47,080 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 263 transitions, 2329 flow [2023-11-06 22:10:47,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:47,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:47,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:47,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:47,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:47,286 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:47,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash 886210438, now seen corresponding path program 1 times [2023-11-06 22:10:47,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:47,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961944206] [2023-11-06 22:10:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:47,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961944206] [2023-11-06 22:10:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961944206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655754143] [2023-11-06 22:10:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:47,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:47,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:47,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:47,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:10:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:47,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:47,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:47,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655754143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:10:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010303129] [2023-11-06 22:10:47,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:47,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:47,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:10:47,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 973 [2023-11-06 22:10:47,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 263 transitions, 2329 flow. Second operand has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:47,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:47,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 973 [2023-11-06 22:10:47,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:48,960 INFO L124 PetriNetUnfolderBase]: 3678/6155 cut-off events. [2023-11-06 22:10:48,961 INFO L125 PetriNetUnfolderBase]: For 7705/7705 co-relation queries the response was YES. [2023-11-06 22:10:48,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22405 conditions, 6155 events. 3678/6155 cut-off events. For 7705/7705 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 38206 event pairs, 916 based on Foata normal form. 0/5454 useless extension candidates. Maximal degree in co-relation 19888. Up to 3715 conditions per place. [2023-11-06 22:10:48,996 INFO L140 encePairwiseOnDemand]: 966/973 looper letters, 273 selfloop transitions, 7 changer transitions 0/282 dead transitions. [2023-11-06 22:10:48,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 282 transitions, 2955 flow [2023-11-06 22:10:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1731 transitions. [2023-11-06 22:10:49,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4447584789311408 [2023-11-06 22:10:49,001 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1731 transitions. [2023-11-06 22:10:49,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1731 transitions. [2023-11-06 22:10:49,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:49,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1731 transitions. [2023-11-06 22:10:49,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 432.75) internal successors, (1731), 4 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:49,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:49,008 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:49,008 INFO L175 Difference]: Start difference. First operand has 106 places, 263 transitions, 2329 flow. Second operand 4 states and 1731 transitions. [2023-11-06 22:10:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 282 transitions, 2955 flow [2023-11-06 22:10:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 282 transitions, 2942 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:49,092 INFO L231 Difference]: Finished difference. Result has 108 places, 267 transitions, 2375 flow [2023-11-06 22:10:49,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2375, PETRI_PLACES=108, PETRI_TRANSITIONS=267} [2023-11-06 22:10:49,093 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2023-11-06 22:10:49,093 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 267 transitions, 2375 flow [2023-11-06 22:10:49,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:49,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:49,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:49,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:49,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:49,294 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:49,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 886210430, now seen corresponding path program 1 times [2023-11-06 22:10:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421923559] [2023-11-06 22:10:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421923559] [2023-11-06 22:10:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421923559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411420308] [2023-11-06 22:10:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:49,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:49,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:49,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:49,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:10:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:49,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:49,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:49,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411420308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:49,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:10:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113511049] [2023-11-06 22:10:49,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:10:49,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:10:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:49,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 973 [2023-11-06 22:10:49,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 267 transitions, 2375 flow. Second operand has 7 states, 7 states have (on average 423.14285714285717) internal successors, (2962), 7 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:49,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:49,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 973 [2023-11-06 22:10:49,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:51,995 INFO L124 PetriNetUnfolderBase]: 7718/12179 cut-off events. [2023-11-06 22:10:51,996 INFO L125 PetriNetUnfolderBase]: For 22547/22547 co-relation queries the response was YES. [2023-11-06 22:10:52,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42355 conditions, 12179 events. 7718/12179 cut-off events. For 22547/22547 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 77726 event pairs, 1152 based on Foata normal form. 132/11902 useless extension candidates. Maximal degree in co-relation 39836. Up to 3559 conditions per place. [2023-11-06 22:10:52,093 INFO L140 encePairwiseOnDemand]: 967/973 looper letters, 326 selfloop transitions, 9 changer transitions 3/340 dead transitions. [2023-11-06 22:10:52,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 340 transitions, 3333 flow [2023-11-06 22:10:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2625 transitions. [2023-11-06 22:10:52,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44964028776978415 [2023-11-06 22:10:52,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2625 transitions. [2023-11-06 22:10:52,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2625 transitions. [2023-11-06 22:10:52,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:52,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2625 transitions. [2023-11-06 22:10:52,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 437.5) internal successors, (2625), 6 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:52,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:52,111 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 973.0) internal successors, (6811), 7 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:52,112 INFO L175 Difference]: Start difference. First operand has 108 places, 267 transitions, 2375 flow. Second operand 6 states and 2625 transitions. [2023-11-06 22:10:52,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 340 transitions, 3333 flow [2023-11-06 22:10:52,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 340 transitions, 3304 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:52,255 INFO L231 Difference]: Finished difference. Result has 116 places, 274 transitions, 2474 flow [2023-11-06 22:10:52,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2474, PETRI_PLACES=116, PETRI_TRANSITIONS=274} [2023-11-06 22:10:52,256 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2023-11-06 22:10:52,256 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 274 transitions, 2474 flow [2023-11-06 22:10:52,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 423.14285714285717) internal successors, (2962), 7 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:52,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:52,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:52,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:10:52,464 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:52,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 886210433, now seen corresponding path program 1 times [2023-11-06 22:10:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191501016] [2023-11-06 22:10:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:52,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:52,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191501016] [2023-11-06 22:10:52,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191501016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:52,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390686770] [2023-11-06 22:10:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:52,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:52,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:52,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:52,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:10:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:52,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:52,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:52,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390686770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:52,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-11-06 22:10:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468074131] [2023-11-06 22:10:52,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:10:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:10:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:53,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 973 [2023-11-06 22:10:53,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 274 transitions, 2474 flow. Second operand has 8 states, 8 states have (on average 388.25) internal successors, (3106), 8 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:53,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:53,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 973 [2023-11-06 22:10:53,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:56,909 INFO L124 PetriNetUnfolderBase]: 10124/16817 cut-off events. [2023-11-06 22:10:56,910 INFO L125 PetriNetUnfolderBase]: For 50363/50363 co-relation queries the response was YES. [2023-11-06 22:10:57,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57828 conditions, 16817 events. 10124/16817 cut-off events. For 50363/50363 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 121755 event pairs, 3484 based on Foata normal form. 2600/19390 useless extension candidates. Maximal degree in co-relation 54169. Up to 6525 conditions per place. [2023-11-06 22:10:57,053 INFO L140 encePairwiseOnDemand]: 964/973 looper letters, 447 selfloop transitions, 21 changer transitions 9/479 dead transitions. [2023-11-06 22:10:57,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 479 transitions, 5301 flow [2023-11-06 22:10:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3173 transitions. [2023-11-06 22:10:57,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40763103802672146 [2023-11-06 22:10:57,058 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3173 transitions. [2023-11-06 22:10:57,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3173 transitions. [2023-11-06 22:10:57,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:57,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3173 transitions. [2023-11-06 22:10:57,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 396.625) internal successors, (3173), 8 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:57,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 973.0) internal successors, (8757), 9 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:57,293 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 973.0) internal successors, (8757), 9 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:57,293 INFO L175 Difference]: Start difference. First operand has 116 places, 274 transitions, 2474 flow. Second operand 8 states and 3173 transitions. [2023-11-06 22:10:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 479 transitions, 5301 flow [2023-11-06 22:10:57,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 479 transitions, 5290 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:57,526 INFO L231 Difference]: Finished difference. Result has 121 places, 268 transitions, 2499 flow [2023-11-06 22:10:57,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2499, PETRI_PLACES=121, PETRI_TRANSITIONS=268} [2023-11-06 22:10:57,527 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2023-11-06 22:10:57,527 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 268 transitions, 2499 flow [2023-11-06 22:10:57,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 388.25) internal successors, (3106), 8 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:57,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:57,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:57,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:10:57,728 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:57,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash 886210432, now seen corresponding path program 1 times [2023-11-06 22:10:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:57,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445239319] [2023-11-06 22:10:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:57,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:57,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445239319] [2023-11-06 22:10:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445239319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:57,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992224312] [2023-11-06 22:10:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:57,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 973 [2023-11-06 22:10:57,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 268 transitions, 2499 flow. Second operand has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:57,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 973 [2023-11-06 22:10:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:59,725 INFO L124 PetriNetUnfolderBase]: 6028/10277 cut-off events. [2023-11-06 22:10:59,725 INFO L125 PetriNetUnfolderBase]: For 26721/26721 co-relation queries the response was YES. [2023-11-06 22:10:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39639 conditions, 10277 events. 6028/10277 cut-off events. For 26721/26721 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 69231 event pairs, 456 based on Foata normal form. 688/10964 useless extension candidates. Maximal degree in co-relation 35970. Up to 6812 conditions per place. [2023-11-06 22:10:59,818 INFO L140 encePairwiseOnDemand]: 971/973 looper letters, 270 selfloop transitions, 2 changer transitions 0/274 dead transitions. [2023-11-06 22:10:59,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 274 transitions, 3055 flow [2023-11-06 22:10:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2023-11-06 22:10:59,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44021925316889343 [2023-11-06 22:10:59,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2023-11-06 22:10:59,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2023-11-06 22:10:59,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:59,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2023-11-06 22:10:59,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:59,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:59,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 973.0) internal successors, (3892), 4 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:59,825 INFO L175 Difference]: Start difference. First operand has 121 places, 268 transitions, 2499 flow. Second operand 3 states and 1285 transitions. [2023-11-06 22:10:59,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 274 transitions, 3055 flow [2023-11-06 22:10:59,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 274 transitions, 3006 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:59,969 INFO L231 Difference]: Finished difference. Result has 113 places, 266 transitions, 2441 flow [2023-11-06 22:10:59,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2441, PETRI_PLACES=113, PETRI_TRANSITIONS=266} [2023-11-06 22:10:59,970 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2023-11-06 22:10:59,970 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 266 transitions, 2441 flow [2023-11-06 22:10:59,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:59,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:59,971 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-06 22:10:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:10:59,971 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:10:59,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash 675560767, now seen corresponding path program 1 times [2023-11-06 22:10:59,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:59,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27363858] [2023-11-06 22:10:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27363858] [2023-11-06 22:11:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27363858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177635808] [2023-11-06 22:11:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:00,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:00,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:11:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:00,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:11:00,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:00,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177635808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:00,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 22:11:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879666718] [2023-11-06 22:11:00,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:11:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:11:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:11:01,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:11:01,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 266 transitions, 2441 flow. Second operand has 25 states, 25 states have (on average 400.12) internal successors, (10003), 25 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:01,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:01,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:11:01,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:04,702 INFO L124 PetriNetUnfolderBase]: 7264/12605 cut-off events. [2023-11-06 22:11:04,702 INFO L125 PetriNetUnfolderBase]: For 77361/77361 co-relation queries the response was YES. [2023-11-06 22:11:04,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52116 conditions, 12605 events. 7264/12605 cut-off events. For 77361/77361 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 85468 event pairs, 3328 based on Foata normal form. 1056/13622 useless extension candidates. Maximal degree in co-relation 40570. Up to 10205 conditions per place. [2023-11-06 22:11:04,815 INFO L140 encePairwiseOnDemand]: 960/973 looper letters, 65 selfloop transitions, 391 changer transitions 0/458 dead transitions. [2023-11-06 22:11:04,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 458 transitions, 5117 flow [2023-11-06 22:11:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:11:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:11:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 9828 transitions. [2023-11-06 22:11:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420863309352518 [2023-11-06 22:11:04,825 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 9828 transitions. [2023-11-06 22:11:04,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 9828 transitions. [2023-11-06 22:11:04,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:04,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 9828 transitions. [2023-11-06 22:11:04,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 409.5) internal successors, (9828), 24 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:04,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 973.0) internal successors, (24325), 25 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 973.0) internal successors, (24325), 25 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:04,867 INFO L175 Difference]: Start difference. First operand has 113 places, 266 transitions, 2441 flow. Second operand 24 states and 9828 transitions. [2023-11-06 22:11:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 458 transitions, 5117 flow [2023-11-06 22:11:05,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 458 transitions, 5115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:05,316 INFO L231 Difference]: Finished difference. Result has 147 places, 458 transitions, 5349 flow [2023-11-06 22:11:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5349, PETRI_PLACES=147, PETRI_TRANSITIONS=458} [2023-11-06 22:11:05,317 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 89 predicate places. [2023-11-06 22:11:05,317 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 458 transitions, 5349 flow [2023-11-06 22:11:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 400.12) internal successors, (10003), 25 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:05,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:05,319 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:05,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:05,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:11:05,519 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:11:05,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1181023178, now seen corresponding path program 2 times [2023-11-06 22:11:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589165859] [2023-11-06 22:11:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589165859] [2023-11-06 22:11:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589165859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710164331] [2023-11-06 22:11:05,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:05,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:05,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:05,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:11:06,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:11:06,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:06,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:11:06,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 22:11:06,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 22:11:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710164331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:06,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:06,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-06 22:11:06,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616410367] [2023-11-06 22:11:06,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:11:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:11:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:11:06,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 973 [2023-11-06 22:11:06,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 458 transitions, 5349 flow. Second operand has 11 states, 11 states have (on average 412.54545454545456) internal successors, (4538), 11 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:06,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:06,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 973 [2023-11-06 22:11:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:10,105 INFO L124 PetriNetUnfolderBase]: 7324/12989 cut-off events. [2023-11-06 22:11:10,105 INFO L125 PetriNetUnfolderBase]: For 51483/51483 co-relation queries the response was YES. [2023-11-06 22:11:10,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61718 conditions, 12989 events. 7324/12989 cut-off events. For 51483/51483 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 89876 event pairs, 3328 based on Foata normal form. 576/13559 useless extension candidates. Maximal degree in co-relation 55798. Up to 8177 conditions per place. [2023-11-06 22:11:10,261 INFO L140 encePairwiseOnDemand]: 967/973 looper letters, 425 selfloop transitions, 226 changer transitions 0/653 dead transitions. [2023-11-06 22:11:10,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 653 transitions, 8520 flow [2023-11-06 22:11:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:11:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:11:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4578 transitions. [2023-11-06 22:11:10,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277305428384565 [2023-11-06 22:11:10,269 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4578 transitions. [2023-11-06 22:11:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4578 transitions. [2023-11-06 22:11:10,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:10,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4578 transitions. [2023-11-06 22:11:10,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 416.1818181818182) internal successors, (4578), 11 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:10,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 973.0) internal successors, (11676), 12 states have internal predecessors, (11676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:10,296 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 973.0) internal successors, (11676), 12 states have internal predecessors, (11676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:10,296 INFO L175 Difference]: Start difference. First operand has 147 places, 458 transitions, 5349 flow. Second operand 11 states and 4578 transitions. [2023-11-06 22:11:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 653 transitions, 8520 flow [2023-11-06 22:11:10,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 653 transitions, 6349 flow, removed 619 selfloop flow, removed 17 redundant places. [2023-11-06 22:11:10,701 INFO L231 Difference]: Finished difference. Result has 140 places, 464 transitions, 4128 flow [2023-11-06 22:11:10,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4128, PETRI_PLACES=140, PETRI_TRANSITIONS=464} [2023-11-06 22:11:10,702 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 82 predicate places. [2023-11-06 22:11:10,702 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 464 transitions, 4128 flow [2023-11-06 22:11:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 412.54545454545456) internal successors, (4538), 11 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:10,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:10,703 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:10,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:11:10,904 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:11:10,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1178682989, now seen corresponding path program 2 times [2023-11-06 22:11:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:10,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593284154] [2023-11-06 22:11:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:11:11,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593284154] [2023-11-06 22:11:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593284154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380601391] [2023-11-06 22:11:11,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:11,242 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:11,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:11:11,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:11,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:11,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:11:11,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:11:11,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:11:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380601391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:12,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:12,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-11-06 22:11:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253693550] [2023-11-06 22:11:12,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:11:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:11:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:11:12,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 973 [2023-11-06 22:11:12,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 464 transitions, 4128 flow. Second operand has 18 states, 18 states have (on average 383.5) internal successors, (6903), 18 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:12,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:12,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 973 [2023-11-06 22:11:12,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:16,643 INFO L124 PetriNetUnfolderBase]: 7036/12601 cut-off events. [2023-11-06 22:11:16,644 INFO L125 PetriNetUnfolderBase]: For 44691/44691 co-relation queries the response was YES. [2023-11-06 22:11:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51982 conditions, 12601 events. 7036/12601 cut-off events. For 44691/44691 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 87479 event pairs, 312 based on Foata normal form. 256/12854 useless extension candidates. Maximal degree in co-relation 46948. Up to 3732 conditions per place. [2023-11-06 22:11:16,750 INFO L140 encePairwiseOnDemand]: 966/973 looper letters, 585 selfloop transitions, 31 changer transitions 194/810 dead transitions. [2023-11-06 22:11:16,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 810 transitions, 8715 flow [2023-11-06 22:11:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:11:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:11:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4688 transitions. [2023-11-06 22:11:16,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015073655361425 [2023-11-06 22:11:16,755 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4688 transitions. [2023-11-06 22:11:16,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4688 transitions. [2023-11-06 22:11:16,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:16,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4688 transitions. [2023-11-06 22:11:16,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 390.6666666666667) internal successors, (4688), 12 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:16,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 973.0) internal successors, (12649), 13 states have internal predecessors, (12649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:16,775 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 973.0) internal successors, (12649), 13 states have internal predecessors, (12649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:16,775 INFO L175 Difference]: Start difference. First operand has 140 places, 464 transitions, 4128 flow. Second operand 12 states and 4688 transitions. [2023-11-06 22:11:16,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 810 transitions, 8715 flow [2023-11-06 22:11:17,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 810 transitions, 7817 flow, removed 110 selfloop flow, removed 9 redundant places. [2023-11-06 22:11:17,139 INFO L231 Difference]: Finished difference. Result has 141 places, 390 transitions, 3070 flow [2023-11-06 22:11:17,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3070, PETRI_PLACES=141, PETRI_TRANSITIONS=390} [2023-11-06 22:11:17,140 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2023-11-06 22:11:17,140 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 390 transitions, 3070 flow [2023-11-06 22:11:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 383.5) internal successors, (6903), 18 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:17,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:17,141 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-11-06 22:11:17,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:11:17,342 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:11:17,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash -900003201, now seen corresponding path program 2 times [2023-11-06 22:11:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377350211] [2023-11-06 22:11:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:17,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377350211] [2023-11-06 22:11:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377350211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865707142] [2023-11-06 22:11:18,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:18,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:18,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:18,146 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:18,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:11:18,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:11:18,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:18,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:18,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:11:18,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:18,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865707142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:18,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:18,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2023-11-06 22:11:18,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054915999] [2023-11-06 22:11:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:18,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:11:18,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 973 [2023-11-06 22:11:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 390 transitions, 3070 flow. Second operand has 4 states, 4 states have (on average 406.25) internal successors, (1625), 4 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 973 [2023-11-06 22:11:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:20,449 INFO L124 PetriNetUnfolderBase]: 2304/4913 cut-off events. [2023-11-06 22:11:20,449 INFO L125 PetriNetUnfolderBase]: For 24739/24739 co-relation queries the response was YES. [2023-11-06 22:11:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24737 conditions, 4913 events. 2304/4913 cut-off events. For 24739/24739 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 30863 event pairs, 0 based on Foata normal form. 4/4916 useless extension candidates. Maximal degree in co-relation 24694. Up to 4751 conditions per place. [2023-11-06 22:11:20,482 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 296 selfloop transitions, 93 changer transitions 0/389 dead transitions. [2023-11-06 22:11:20,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 389 transitions, 3800 flow [2023-11-06 22:11:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:11:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:11:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1634 transitions. [2023-11-06 22:11:20,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198355601233299 [2023-11-06 22:11:20,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1634 transitions. [2023-11-06 22:11:20,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1634 transitions. [2023-11-06 22:11:20,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:20,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1634 transitions. [2023-11-06 22:11:20,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 408.5) internal successors, (1634), 4 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:20,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:20,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:20,492 INFO L175 Difference]: Start difference. First operand has 141 places, 390 transitions, 3070 flow. Second operand 4 states and 1634 transitions. [2023-11-06 22:11:20,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 389 transitions, 3800 flow [2023-11-06 22:11:20,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 389 transitions, 3731 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-06 22:11:20,597 INFO L231 Difference]: Finished difference. Result has 99 places, 389 transitions, 3139 flow [2023-11-06 22:11:20,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3139, PETRI_PLACES=99, PETRI_TRANSITIONS=389} [2023-11-06 22:11:20,598 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2023-11-06 22:11:20,598 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 389 transitions, 3139 flow [2023-11-06 22:11:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 406.25) internal successors, (1625), 4 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:20,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:20,598 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:20,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:11:20,805 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:11:20,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1519141124, now seen corresponding path program 1 times [2023-11-06 22:11:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730488382] [2023-11-06 22:11:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:21,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:21,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730488382] [2023-11-06 22:11:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730488382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741691768] [2023-11-06 22:11:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:21,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:21,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:21,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:21,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:11:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:21,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:11:21,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:22,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:22,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741691768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:22,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:22,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-06 22:11:22,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683490552] [2023-11-06 22:11:22,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:22,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-06 22:11:22,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-06 22:11:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 22:11:23,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 973 [2023-11-06 22:11:23,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 389 transitions, 3139 flow. Second operand has 49 states, 49 states have (on average 400.1224489795918) internal successors, (19606), 49 states have internal predecessors, (19606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:23,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 973 [2023-11-06 22:11:23,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:28,091 INFO L124 PetriNetUnfolderBase]: 4776/9857 cut-off events. [2023-11-06 22:11:28,091 INFO L125 PetriNetUnfolderBase]: For 556977/556977 co-relation queries the response was YES. [2023-11-06 22:11:28,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47589 conditions, 9857 events. 4776/9857 cut-off events. For 556977/556977 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 64295 event pairs, 0 based on Foata normal form. 2304/12161 useless extension candidates. Maximal degree in co-relation 47553. Up to 7283 conditions per place. [2023-11-06 22:11:28,156 INFO L140 encePairwiseOnDemand]: 962/973 looper letters, 30 selfloop transitions, 743 changer transitions 0/773 dead transitions. [2023-11-06 22:11:28,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 773 transitions, 7829 flow [2023-11-06 22:11:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 22:11:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 22:11:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 19556 transitions. [2023-11-06 22:11:28,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41872216512504284 [2023-11-06 22:11:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 19556 transitions. [2023-11-06 22:11:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 19556 transitions. [2023-11-06 22:11:28,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:28,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 19556 transitions. [2023-11-06 22:11:28,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 407.4166666666667) internal successors, (19556), 48 states have internal predecessors, (19556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 973.0) internal successors, (47677), 49 states have internal predecessors, (47677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,247 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 973.0) internal successors, (47677), 49 states have internal predecessors, (47677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,247 INFO L175 Difference]: Start difference. First operand has 99 places, 389 transitions, 3139 flow. Second operand 48 states and 19556 transitions. [2023-11-06 22:11:28,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 773 transitions, 7829 flow [2023-11-06 22:11:28,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 773 transitions, 7451 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:28,375 INFO L231 Difference]: Finished difference. Result has 167 places, 773 transitions, 8043 flow [2023-11-06 22:11:28,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=8043, PETRI_PLACES=167, PETRI_TRANSITIONS=773} [2023-11-06 22:11:28,376 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 109 predicate places. [2023-11-06 22:11:28,376 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 773 transitions, 8043 flow [2023-11-06 22:11:28,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 400.1224489795918) internal successors, (19606), 49 states have internal predecessors, (19606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:28,379 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:28,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:11:28,579 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:11:28,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 490088580, now seen corresponding path program 2 times [2023-11-06 22:11:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142844047] [2023-11-06 22:11:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:31,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142844047] [2023-11-06 22:11:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142844047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829501813] [2023-11-06 22:11:31,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:31,054 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:31,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:11:31,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:11:31,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:31,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:31,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-06 22:11:31,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829501813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:31,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:31,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [48] total 50 [2023-11-06 22:11:31,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453658631] [2023-11-06 22:11:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:31,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:31,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 22:11:31,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 973 [2023-11-06 22:11:31,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 773 transitions, 8043 flow. Second operand has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:31,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:31,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 973 [2023-11-06 22:11:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:35,254 INFO L124 PetriNetUnfolderBase]: 4776/9761 cut-off events. [2023-11-06 22:11:35,255 INFO L125 PetriNetUnfolderBase]: For 97229/97229 co-relation queries the response was YES. [2023-11-06 22:11:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59519 conditions, 9761 events. 4776/9761 cut-off events. For 97229/97229 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 63126 event pairs, 0 based on Foata normal form. 96/9851 useless extension candidates. Maximal degree in co-relation 59459. Up to 7283 conditions per place. [2023-11-06 22:11:35,331 INFO L140 encePairwiseOnDemand]: 968/973 looper letters, 0 selfloop transitions, 0 changer transitions 770/770 dead transitions. [2023-11-06 22:11:35,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 770 transitions, 9295 flow [2023-11-06 22:11:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:11:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:11:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1633 transitions. [2023-11-06 22:11:35,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41957862281603286 [2023-11-06 22:11:35,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1633 transitions. [2023-11-06 22:11:35,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1633 transitions. [2023-11-06 22:11:35,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:35,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1633 transitions. [2023-11-06 22:11:35,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 408.25) internal successors, (1633), 4 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:35,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:35,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 973.0) internal successors, (4865), 5 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:35,342 INFO L175 Difference]: Start difference. First operand has 167 places, 773 transitions, 8043 flow. Second operand 4 states and 1633 transitions. [2023-11-06 22:11:35,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 770 transitions, 9295 flow [2023-11-06 22:11:35,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 770 transitions, 6062 flow, removed 700 selfloop flow, removed 69 redundant places. [2023-11-06 22:11:35,626 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2023-11-06 22:11:35,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=973, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2023-11-06 22:11:35,627 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2023-11-06 22:11:35,628 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2023-11-06 22:11:35,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:35,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2023-11-06 22:11:35,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-11-06 22:11:35,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-11-06 22:11:35,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-11-06 22:11:35,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-11-06 22:11:35,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-11-06 22:11:35,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-11-06 22:11:35,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-11-06 22:11:35,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2023-11-06 22:11:35,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2023-11-06 22:11:35,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2023-11-06 22:11:35,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2023-11-06 22:11:35,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2023-11-06 22:11:35,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-11-06 22:11:35,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-11-06 22:11:35,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-11-06 22:11:35,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-11-06 22:11:35,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-11-06 22:11:35,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-11-06 22:11:35,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:35,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:35,839 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:35,845 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:11:35,845 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:11:35,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:11:35 BasicIcfg [2023-11-06 22:11:35,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:11:35,865 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:11:35,866 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:11:35,866 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:11:35,866 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03" (3/4) ... [2023-11-06 22:11:35,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:11:35,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:11:35,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:11:35,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:11:35,888 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-06 22:11:35,889 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:11:35,890 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:11:35,891 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:11:35,985 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:11:35,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:11:35,986 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:11:35,987 INFO L158 Benchmark]: Toolchain (without parser) took 94564.05ms. Allocated memory was 151.0MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 111.7MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 888.4MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,987 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:11:35,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.95ms. Allocated memory is still 151.0MB. Free memory was 111.7MB in the beginning and 115.2MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.69ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 111.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,988 INFO L158 Benchmark]: Boogie Preprocessor took 53.18ms. Allocated memory is still 151.0MB. Free memory was 111.8MB in the beginning and 109.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,988 INFO L158 Benchmark]: RCFGBuilder took 1347.08ms. Allocated memory is still 151.0MB. Free memory was 109.1MB in the beginning and 112.0MB in the end (delta: -3.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,989 INFO L158 Benchmark]: TraceAbstraction took 92567.88ms. Allocated memory was 151.0MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 111.2MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-11-06 22:11:35,989 INFO L158 Benchmark]: Witness Printer took 120.65ms. Allocated memory is still 6.1GB. Free memory was 5.2GB in the beginning and 5.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:11:35,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.95ms. Allocated memory is still 151.0MB. Free memory was 111.7MB in the beginning and 115.2MB in the end (delta: -3.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.69ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 111.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.18ms. Allocated memory is still 151.0MB. Free memory was 111.8MB in the beginning and 109.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1347.08ms. Allocated memory is still 151.0MB. Free memory was 109.1MB in the beginning and 112.0MB in the end (delta: -3.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * TraceAbstraction took 92567.88ms. Allocated memory was 151.0MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 111.2MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 120.65ms. Allocated memory is still 6.1GB. Free memory was 5.2GB in the beginning and 5.2GB in the end (delta: 6.3MB). 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: 20.6s, 414 PlacesBefore, 58 PlacesAfterwards, 440 TransitionsBefore, 57 TransitionsAfterwards, 7238 CoEnabledTransitionPairs, 8 FixpointIterations, 301 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 60 TrivialYvCompositions, 32 ConcurrentYvCompositions, 27 ChoiceCompositions, 506 TotalNumberOfCompositions, 8856 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7440, independent: 7378, independent conditional: 0, independent unconditional: 7378, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4075, independent: 4056, independent conditional: 0, independent unconditional: 4056, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7440, independent: 3322, independent conditional: 0, independent unconditional: 3322, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 4075, unknown conditional: 0, unknown unconditional: 4075] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 149]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 126]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 126]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 522 locations, 39 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: 92.3s, OverallIterations: 30, TraceHistogramMax: 46, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 52.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5044 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3979 mSDsluCounter, 1738 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1423 mSDsCounter, 2085 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9102 IncrementalHoareTripleChecker+Invalid, 11187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2085 mSolverCounterUnsat, 315 mSDtfsCounter, 9102 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 628 GetRequests, 327 SyntacticMatches, 4 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8043occurred in iteration=29, InterpolantAutomatonStates: 223, 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: 0.6s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 646 NumberOfCodeBlocks, 547 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 735 ConstructedInterpolants, 0 QuantifiedInterpolants, 2275 SizeOfPredicates, 25 NumberOfNonLiveVariables, 4974 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 59 InterpolantComputations, 19 PerfectInterpolantSequences, 1579/4053 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 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:11:36,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597c2692-7e4d-4f45-8c23-3f2dfb9a46bc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE