./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:57:34,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:57:34,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:57:34,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:57:34,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:57:34,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:57:34,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:57:34,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:57:34,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:57:34,447 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:57:34,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:57:34,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:57:34,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:57:34,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:57:34,450 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:57:34,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:57:34,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:57:34,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:57:34,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:57:34,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:57:34,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:57:34,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:57:34,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:57:34,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:57:34,455 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:57:34,456 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:57:34,456 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:57:34,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:57:34,457 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:57:34,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:57:34,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:57:34,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:57:34,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:57:34,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:57:34,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:57:34,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:57:34,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:57:34,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:57:34,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:57:34,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:57:34,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:57:34,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:57:34,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:57:34,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:57:34,461 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_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2023-11-29 06:57:34,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:57:34,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:57:34,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:57:34,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:57:34,707 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:57:34,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-1.i [2023-11-29 06:57:37,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:57:37,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:57:37,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/sv-benchmarks/c/pthread/triangular-1.i [2023-11-29 06:57:37,763 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/data/f58da90a2/fe36eccd037a4714ab4c49226a3d37c0/FLAGb543c2de5 [2023-11-29 06:57:37,777 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/data/f58da90a2/fe36eccd037a4714ab4c49226a3d37c0 [2023-11-29 06:57:37,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:57:37,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:57:37,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:57:37,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:57:37,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:57:37,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:37" (1/1) ... [2023-11-29 06:57:37,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa7bce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:37, skipping insertion in model container [2023-11-29 06:57:37,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:37" (1/1) ... [2023-11-29 06:57:37,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:57:38,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:57:38,155 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:57:38,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:57:38,231 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:57:38,231 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:57:38,240 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:57:38,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38 WrapperNode [2023-11-29 06:57:38,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:57:38,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:57:38,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:57:38,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:57:38,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,284 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-29 06:57:38,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:57:38,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:57:38,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:57:38,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:57:38,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,316 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 06:57:38,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:57:38,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:57:38,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:57:38,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:57:38,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (1/1) ... [2023-11-29 06:57:38,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:57:38,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:38,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:57:38,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:57:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 06:57:38,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 06:57:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 06:57:38,396 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 06:57:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:57:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:57:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:57:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:57:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:57:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:57:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:57:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:57:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:57:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:57:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:57:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:57:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:57:38,400 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:57:38,549 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:57:38,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:57:38,706 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:57:38,815 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:57:38,815 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:57:38,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:38 BoogieIcfgContainer [2023-11-29 06:57:38,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:57:38,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:57:38,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:57:38,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:57:38,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:57:37" (1/3) ... [2023-11-29 06:57:38,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7770f707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:38, skipping insertion in model container [2023-11-29 06:57:38,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:38" (2/3) ... [2023-11-29 06:57:38,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7770f707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:38, skipping insertion in model container [2023-11-29 06:57:38,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:38" (3/3) ... [2023-11-29 06:57:38,824 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-29 06:57:38,831 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:57:38,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:57:38,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 06:57:38,839 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:57:38,875 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:57:38,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2023-11-29 06:57:38,937 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2023-11-29 06:57:38,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:57:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 06:57:38,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2023-11-29 06:57:38,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2023-11-29 06:57:38,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:57:38,961 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d1fdb73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:57:38,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 06:57:38,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:57:38,966 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 06:57:38,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:57:38,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:38,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:57:38,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:38,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash 223253781, now seen corresponding path program 1 times [2023-11-29 06:57:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737651972] [2023-11-29 06:57:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737651972] [2023-11-29 06:57:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737651972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:39,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:57:39,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900526339] [2023-11-29 06:57:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:39,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:57:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:39,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:57:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:57:39,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:39,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:39,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:39,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:39,415 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2023-11-29 06:57:39,415 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:57:39,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3048 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2023-11-29 06:57:39,425 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-29 06:57:39,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2023-11-29 06:57:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:57:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-29 06:57:39,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2023-11-29 06:57:39,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-29 06:57:39,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-29 06:57:39,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:39,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-29 06:57:39,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,451 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2023-11-29 06:57:39,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2023-11-29 06:57:39,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:39,456 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-11-29 06:57:39,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-29 06:57:39,462 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-29 06:57:39,462 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-11-29 06:57:39,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:39,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:57:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:57:39,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 223253782, now seen corresponding path program 1 times [2023-11-29 06:57:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:39,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646075097] [2023-11-29 06:57:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:39,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646075097] [2023-11-29 06:57:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646075097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:39,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:39,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:57:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828091872] [2023-11-29 06:57:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:39,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:57:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:57:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:57:39,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:39,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:39,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:39,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:39,647 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2023-11-29 06:57:39,647 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 06:57:39,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3039 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2023-11-29 06:57:39,654 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-29 06:57:39,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2023-11-29 06:57:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:57:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 06:57:39,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 06:57:39,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 06:57:39,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 06:57:39,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:39,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 06:57:39,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,659 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2023-11-29 06:57:39,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2023-11-29 06:57:39,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:39,662 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2023-11-29 06:57:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-29 06:57:39,664 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-29 06:57:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2023-11-29 06:57:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:39,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:57:39,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -201472424, now seen corresponding path program 1 times [2023-11-29 06:57:39,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:39,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376198213] [2023-11-29 06:57:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376198213] [2023-11-29 06:57:39,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376198213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:39,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:39,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:57:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140158441] [2023-11-29 06:57:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:39,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 06:57:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 06:57:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:39,989 INFO L124 PetriNetUnfolderBase]: 661/1319 cut-off events. [2023-11-29 06:57:39,989 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-29 06:57:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1319 events. 661/1319 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8393 event pairs, 376 based on Foata normal form. 64/1222 useless extension candidates. Maximal degree in co-relation 2731. Up to 721 conditions per place. [2023-11-29 06:57:39,998 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-29 06:57:39,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2023-11-29 06:57:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:57:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:57:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-29 06:57:40,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2023-11-29 06:57:40,001 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-29 06:57:40,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-29 06:57:40,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:40,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-29 06:57:40,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,004 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2023-11-29 06:57:40,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2023-11-29 06:57:40,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:57:40,007 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2023-11-29 06:57:40,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-29 06:57:40,008 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-29 06:57:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2023-11-29 06:57:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:40,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:57:40,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:40,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -205369086, now seen corresponding path program 1 times [2023-11-29 06:57:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959101713] [2023-11-29 06:57:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:40,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:40,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959101713] [2023-11-29 06:57:40,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959101713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:40,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:40,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:57:40,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166591942] [2023-11-29 06:57:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:40,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:57:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:57:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:57:40,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:40,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:40,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:40,188 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2023-11-29 06:57:40,188 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-29 06:57:40,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6809 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2023-11-29 06:57:40,196 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-29 06:57:40,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2023-11-29 06:57:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:57:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-29 06:57:40,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.78125 [2023-11-29 06:57:40,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-29 06:57:40,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-29 06:57:40,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:40,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-29 06:57:40,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,200 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2023-11-29 06:57:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2023-11-29 06:57:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:57:40,204 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2023-11-29 06:57:40,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-29 06:57:40,206 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-29 06:57:40,206 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2023-11-29 06:57:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:40,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:57:40,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:40,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -205369085, now seen corresponding path program 1 times [2023-11-29 06:57:40,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481012355] [2023-11-29 06:57:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:40,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:40,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481012355] [2023-11-29 06:57:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481012355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:40,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:40,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:57:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432152463] [2023-11-29 06:57:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:57:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:57:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:57:40,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:40,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:40,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:40,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:40,402 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2023-11-29 06:57:40,402 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-29 06:57:40,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6807 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2023-11-29 06:57:40,409 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-29 06:57:40,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2023-11-29 06:57:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:57:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-29 06:57:40,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2023-11-29 06:57:40,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-29 06:57:40,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-29 06:57:40,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:40,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-29 06:57:40,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,413 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2023-11-29 06:57:40,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2023-11-29 06:57:40,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:40,417 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2023-11-29 06:57:40,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-29 06:57:40,418 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-11-29 06:57:40,418 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2023-11-29 06:57:40,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:40,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:57:40,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 208813157, now seen corresponding path program 1 times [2023-11-29 06:57:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469096104] [2023-11-29 06:57:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:40,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469096104] [2023-11-29 06:57:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469096104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:57:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938098558] [2023-11-29 06:57:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:40,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 06:57:40,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:40,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 06:57:40,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:40,670 INFO L124 PetriNetUnfolderBase]: 661/1351 cut-off events. [2023-11-29 06:57:40,670 INFO L125 PetriNetUnfolderBase]: For 1041/1157 co-relation queries the response was YES. [2023-11-29 06:57:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1351 events. 661/1351 cut-off events. For 1041/1157 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8864 event pairs, 292 based on Foata normal form. 87/1388 useless extension candidates. Maximal degree in co-relation 3357. Up to 853 conditions per place. [2023-11-29 06:57:40,682 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-29 06:57:40,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2023-11-29 06:57:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:57:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:57:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-29 06:57:40,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2023-11-29 06:57:40,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-29 06:57:40,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-29 06:57:40,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:40,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-29 06:57:40,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,686 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2023-11-29 06:57:40,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2023-11-29 06:57:40,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:57:40,691 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2023-11-29 06:57:40,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-29 06:57:40,692 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-29 06:57:40,692 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2023-11-29 06:57:40,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:40,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:57:40,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:40,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1172991260, now seen corresponding path program 1 times [2023-11-29 06:57:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381479168] [2023-11-29 06:57:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:40,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:40,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381479168] [2023-11-29 06:57:40,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381479168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:40,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:40,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:57:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352461716] [2023-11-29 06:57:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:40,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:40,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:40,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:40,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:40,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:40,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:40,997 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2023-11-29 06:57:40,997 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2023-11-29 06:57:41,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9383 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2023-11-29 06:57:41,010 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-29 06:57:41,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2023-11-29 06:57:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:57:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:57:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-29 06:57:41,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2023-11-29 06:57:41,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-29 06:57:41,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-29 06:57:41,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:41,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-29 06:57:41,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,014 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2023-11-29 06:57:41,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2023-11-29 06:57:41,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:57:41,019 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2023-11-29 06:57:41,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-29 06:57:41,020 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-11-29 06:57:41,021 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2023-11-29 06:57:41,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:41,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:41,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:57:41,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:41,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1191038841, now seen corresponding path program 1 times [2023-11-29 06:57:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240814744] [2023-11-29 06:57:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:41,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240814744] [2023-11-29 06:57:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240814744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:41,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:57:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462231154] [2023-11-29 06:57:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:41,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:41,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:41,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:41,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:41,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:41,320 INFO L124 PetriNetUnfolderBase]: 608/1490 cut-off events. [2023-11-29 06:57:41,321 INFO L125 PetriNetUnfolderBase]: For 1762/1878 co-relation queries the response was YES. [2023-11-29 06:57:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1490 events. 608/1490 cut-off events. For 1762/1878 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10785 event pairs, 81 based on Foata normal form. 69/1523 useless extension candidates. Maximal degree in co-relation 4048. Up to 509 conditions per place. [2023-11-29 06:57:41,335 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-29 06:57:41,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2023-11-29 06:57:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:57:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:57:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2023-11-29 06:57:41,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2023-11-29 06:57:41,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2023-11-29 06:57:41,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2023-11-29 06:57:41,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:41,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2023-11-29 06:57:41,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,340 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2023-11-29 06:57:41,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2023-11-29 06:57:41,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 06:57:41,349 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2023-11-29 06:57:41,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-29 06:57:41,350 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-11-29 06:57:41,350 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2023-11-29 06:57:41,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:41,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:41,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:57:41,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:41,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1865249180, now seen corresponding path program 1 times [2023-11-29 06:57:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:41,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593855544] [2023-11-29 06:57:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:41,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593855544] [2023-11-29 06:57:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593855544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:57:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767967376] [2023-11-29 06:57:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:41,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:41,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:41,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:41,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:41,591 INFO L124 PetriNetUnfolderBase]: 503/1205 cut-off events. [2023-11-29 06:57:41,591 INFO L125 PetriNetUnfolderBase]: For 2149/2256 co-relation queries the response was YES. [2023-11-29 06:57:41,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1205 events. 503/1205 cut-off events. For 2149/2256 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8108 event pairs, 378 based on Foata normal form. 84/1229 useless extension candidates. Maximal degree in co-relation 3375. Up to 846 conditions per place. [2023-11-29 06:57:41,603 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 30 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-29 06:57:41,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 319 flow [2023-11-29 06:57:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:57:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-29 06:57:41,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-29 06:57:41,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-29 06:57:41,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-29 06:57:41,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:41,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-29 06:57:41,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,606 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 3 states and 60 transitions. [2023-11-29 06:57:41,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 319 flow [2023-11-29 06:57:41,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 304 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 06:57:41,613 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 244 flow [2023-11-29 06:57:41,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-29 06:57:41,614 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-11-29 06:57:41,614 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 244 flow [2023-11-29 06:57:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:41,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:41,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:57:41,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:41,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1191045681, now seen corresponding path program 1 times [2023-11-29 06:57:41,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:41,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977510411] [2023-11-29 06:57:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:41,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977510411] [2023-11-29 06:57:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977510411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:41,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:57:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103028859] [2023-11-29 06:57:41,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:41,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:41,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:41,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:41,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:41,885 INFO L124 PetriNetUnfolderBase]: 558/1374 cut-off events. [2023-11-29 06:57:41,885 INFO L125 PetriNetUnfolderBase]: For 1496/1607 co-relation queries the response was YES. [2023-11-29 06:57:41,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1374 events. 558/1374 cut-off events. For 1496/1607 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9446 event pairs, 119 based on Foata normal form. 66/1395 useless extension candidates. Maximal degree in co-relation 3646. Up to 674 conditions per place. [2023-11-29 06:57:41,898 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 50 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-29 06:57:41,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 444 flow [2023-11-29 06:57:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:57:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:57:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2023-11-29 06:57:41,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69375 [2023-11-29 06:57:41,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2023-11-29 06:57:41,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2023-11-29 06:57:41,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:41,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2023-11-29 06:57:41,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,902 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 244 flow. Second operand 5 states and 111 transitions. [2023-11-29 06:57:41,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 444 flow [2023-11-29 06:57:41,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:57:41,907 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 269 flow [2023-11-29 06:57:41,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-11-29 06:57:41,908 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 06:57:41,908 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 269 flow [2023-11-29 06:57:41,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:41,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:41,909 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:41,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:57:41,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:41,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2045990776, now seen corresponding path program 1 times [2023-11-29 06:57:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:41,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028570932] [2023-11-29 06:57:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:41,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028570932] [2023-11-29 06:57:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028570932] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265502445] [2023-11-29 06:57:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:41,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:41,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:57:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:42,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:57:42,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:42,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:42,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265502445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:57:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248090362] [2023-11-29 06:57:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:57:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:57:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:57:42,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 06:57:42,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:42,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 06:57:42,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:42,501 INFO L124 PetriNetUnfolderBase]: 851/1803 cut-off events. [2023-11-29 06:57:42,501 INFO L125 PetriNetUnfolderBase]: For 2364/2520 co-relation queries the response was YES. [2023-11-29 06:57:42,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 1803 events. 851/1803 cut-off events. For 2364/2520 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12205 event pairs, 69 based on Foata normal form. 121/1846 useless extension candidates. Maximal degree in co-relation 5050. Up to 572 conditions per place. [2023-11-29 06:57:42,519 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-29 06:57:42,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 700 flow [2023-11-29 06:57:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:57:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:57:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-29 06:57:42,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-29 06:57:42,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-29 06:57:42,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-29 06:57:42,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:42,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-29 06:57:42,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,525 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 269 flow. Second operand 6 states and 124 transitions. [2023-11-29 06:57:42,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 700 flow [2023-11-29 06:57:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 678 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:42,532 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 267 flow [2023-11-29 06:57:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-11-29 06:57:42,533 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-11-29 06:57:42,533 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 267 flow [2023-11-29 06:57:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 06:57:42,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:42,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:42,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:42,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 998795634, now seen corresponding path program 1 times [2023-11-29 06:57:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:42,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083647391] [2023-11-29 06:57:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:57:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083647391] [2023-11-29 06:57:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083647391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:42,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:57:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499490498] [2023-11-29 06:57:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:42,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:42,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 06:57:42,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:42,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:42,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 06:57:42,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:43,080 INFO L124 PetriNetUnfolderBase]: 883/1815 cut-off events. [2023-11-29 06:57:43,081 INFO L125 PetriNetUnfolderBase]: For 2603/2696 co-relation queries the response was YES. [2023-11-29 06:57:43,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1815 events. 883/1815 cut-off events. For 2603/2696 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12013 event pairs, 175 based on Foata normal form. 113/1897 useless extension candidates. Maximal degree in co-relation 5372. Up to 726 conditions per place. [2023-11-29 06:57:43,097 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-11-29 06:57:43,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 534 flow [2023-11-29 06:57:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:57:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:57:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2023-11-29 06:57:43,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2023-11-29 06:57:43,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 78 transitions. [2023-11-29 06:57:43,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 78 transitions. [2023-11-29 06:57:43,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:43,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 78 transitions. [2023-11-29 06:57:43,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,100 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2023-11-29 06:57:43,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 534 flow [2023-11-29 06:57:43,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 518 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 06:57:43,108 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2023-11-29 06:57:43,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-29 06:57:43,109 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 06:57:43,109 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2023-11-29 06:57:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:43,110 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:57:43,110 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:43,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash 146874342, now seen corresponding path program 1 times [2023-11-29 06:57:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:43,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107254048] [2023-11-29 06:57:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:43,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107254048] [2023-11-29 06:57:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107254048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026691004] [2023-11-29 06:57:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:43,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:43,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:57:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:43,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:57:43,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:43,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026691004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 06:57:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972002228] [2023-11-29 06:57:43,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:43,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:57:43,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:57:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:57:43,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 06:57:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:43,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 06:57:43,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:43,610 INFO L124 PetriNetUnfolderBase]: 1026/1892 cut-off events. [2023-11-29 06:57:43,610 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2023-11-29 06:57:43,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1892 events. 1026/1892 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11856 event pairs, 153 based on Foata normal form. 69/1875 useless extension candidates. Maximal degree in co-relation 5727. Up to 765 conditions per place. [2023-11-29 06:57:43,623 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 52 selfloop transitions, 6 changer transitions 1/67 dead transitions. [2023-11-29 06:57:43,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 524 flow [2023-11-29 06:57:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:57:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:57:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-29 06:57:43,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-29 06:57:43,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-29 06:57:43,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-29 06:57:43,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:43,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-29 06:57:43,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,626 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,626 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 74 transitions. [2023-11-29 06:57:43,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 524 flow [2023-11-29 06:57:43,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:43,634 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 267 flow [2023-11-29 06:57:43,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-29 06:57:43,635 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 06:57:43,635 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 267 flow [2023-11-29 06:57:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:43,635 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:43,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:57:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:43,836 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:43,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1612175747, now seen corresponding path program 1 times [2023-11-29 06:57:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261852990] [2023-11-29 06:57:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:43,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261852990] [2023-11-29 06:57:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261852990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72525152] [2023-11-29 06:57:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:43,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:43,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:43,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:43,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:57:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:43,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:57:43,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:44,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:44,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72525152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:44,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:44,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 06:57:44,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856833094] [2023-11-29 06:57:44,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:44,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:57:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:57:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:57:44,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:44,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:44,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:44,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:44,382 INFO L124 PetriNetUnfolderBase]: 747/1709 cut-off events. [2023-11-29 06:57:44,382 INFO L125 PetriNetUnfolderBase]: For 3499/3544 co-relation queries the response was YES. [2023-11-29 06:57:44,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1709 events. 747/1709 cut-off events. For 3499/3544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10738 event pairs, 71 based on Foata normal form. 132/1816 useless extension candidates. Maximal degree in co-relation 5068. Up to 289 conditions per place. [2023-11-29 06:57:44,394 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2023-11-29 06:57:44,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 643 flow [2023-11-29 06:57:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:57:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:57:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-29 06:57:44,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 06:57:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-29 06:57:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-29 06:57:44,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:44,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-29 06:57:44,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,398 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 267 flow. Second operand 7 states and 160 transitions. [2023-11-29 06:57:44,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 643 flow [2023-11-29 06:57:44,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 611 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 06:57:44,407 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 371 flow [2023-11-29 06:57:44,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-29 06:57:44,408 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-11-29 06:57:44,408 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 371 flow [2023-11-29 06:57:44,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:44,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:44,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:57:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:57:44,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:44,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 258137567, now seen corresponding path program 1 times [2023-11-29 06:57:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308594039] [2023-11-29 06:57:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:57:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308594039] [2023-11-29 06:57:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308594039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:57:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242347889] [2023-11-29 06:57:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:57:44,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 06:57:44,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:44,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:44,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 06:57:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:44,992 INFO L124 PetriNetUnfolderBase]: 1190/2257 cut-off events. [2023-11-29 06:57:44,993 INFO L125 PetriNetUnfolderBase]: For 5438/5438 co-relation queries the response was YES. [2023-11-29 06:57:44,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2257 events. 1190/2257 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13425 event pairs, 275 based on Foata normal form. 0/2223 useless extension candidates. Maximal degree in co-relation 7254. Up to 893 conditions per place. [2023-11-29 06:57:45,008 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-29 06:57:45,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 732 flow [2023-11-29 06:57:45,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:57:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:57:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-29 06:57:45,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-29 06:57:45,009 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-29 06:57:45,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-29 06:57:45,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:45,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-29 06:57:45,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,011 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 371 flow. Second operand 4 states and 74 transitions. [2023-11-29 06:57:45,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 732 flow [2023-11-29 06:57:45,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 701 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:45,021 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2023-11-29 06:57:45,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-29 06:57:45,022 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-11-29 06:57:45,022 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2023-11-29 06:57:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:45,023 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:57:45,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:45,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1371124197, now seen corresponding path program 1 times [2023-11-29 06:57:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198122976] [2023-11-29 06:57:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:45,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198122976] [2023-11-29 06:57:45,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198122976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:45,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140814586] [2023-11-29 06:57:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:45,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:45,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:45,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:45,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:57:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:45,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:57:45,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:45,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140814586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:45,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:45,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 06:57:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155484308] [2023-11-29 06:57:45,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:57:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:57:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:57:45,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:45,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:45,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:45,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:45,828 INFO L124 PetriNetUnfolderBase]: 972/2188 cut-off events. [2023-11-29 06:57:45,829 INFO L125 PetriNetUnfolderBase]: For 7406/7424 co-relation queries the response was YES. [2023-11-29 06:57:45,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2188 events. 972/2188 cut-off events. For 7406/7424 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12998 event pairs, 35 based on Foata normal form. 120/2299 useless extension candidates. Maximal degree in co-relation 6991. Up to 262 conditions per place. [2023-11-29 06:57:45,843 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2023-11-29 06:57:45,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 947 flow [2023-11-29 06:57:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:57:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2023-11-29 06:57:45,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.703125 [2023-11-29 06:57:45,845 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 270 transitions. [2023-11-29 06:57:45,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 270 transitions. [2023-11-29 06:57:45,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:45,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 270 transitions. [2023-11-29 06:57:45,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,848 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,848 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2023-11-29 06:57:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 947 flow [2023-11-29 06:57:45,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 910 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 06:57:45,861 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2023-11-29 06:57:45,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2023-11-29 06:57:45,862 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-11-29 06:57:45,862 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2023-11-29 06:57:45,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:45,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:45,862 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:45,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:57:46,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:46,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash 19604967, now seen corresponding path program 1 times [2023-11-29 06:57:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:46,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858357314] [2023-11-29 06:57:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:46,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:46,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858357314] [2023-11-29 06:57:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858357314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:46,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195126259] [2023-11-29 06:57:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:46,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:46,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:46,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:57:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:46,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:57:46,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:46,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195126259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:46,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-29 06:57:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804880831] [2023-11-29 06:57:46,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:46,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:57:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:57:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:57:46,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 06:57:46,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:46,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:46,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 06:57:46,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:47,181 INFO L124 PetriNetUnfolderBase]: 1422/3158 cut-off events. [2023-11-29 06:57:47,181 INFO L125 PetriNetUnfolderBase]: For 11400/11418 co-relation queries the response was YES. [2023-11-29 06:57:47,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3158 events. 1422/3158 cut-off events. For 11400/11418 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 18950 event pairs, 71 based on Foata normal form. 108/3247 useless extension candidates. Maximal degree in co-relation 10090. Up to 406 conditions per place. [2023-11-29 06:57:47,232 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2023-11-29 06:57:47,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1220 flow [2023-11-29 06:57:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:57:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:57:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2023-11-29 06:57:47,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 06:57:47,235 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 336 transitions. [2023-11-29 06:57:47,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 336 transitions. [2023-11-29 06:57:47,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:47,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 336 transitions. [2023-11-29 06:57:47,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.4) internal successors, (336), 15 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:47,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:47,238 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:47,238 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2023-11-29 06:57:47,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1220 flow [2023-11-29 06:57:47,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1207 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 06:57:47,256 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2023-11-29 06:57:47,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2023-11-29 06:57:47,257 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-11-29 06:57:47,257 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2023-11-29 06:57:47,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:47,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:57:47,257 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:47,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:57:47,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:57:47,458 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:57:47,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:47,458 INFO L85 PathProgramCache]: Analyzing trace with hash 117045895, now seen corresponding path program 2 times [2023-11-29 06:57:47,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308878735] [2023-11-29 06:57:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:47,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:57:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:47,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308878735] [2023-11-29 06:57:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308878735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570488126] [2023-11-29 06:57:47,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:57:47,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:47,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:47,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:47,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:57:47,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:57:47,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:57:47,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:57:47,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:57:48,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570488126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 26 [2023-11-29 06:57:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287851228] [2023-11-29 06:57:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:48,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:57:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:57:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:57:48,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 06:57:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:57:48,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 06:57:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:57:49,235 INFO L124 PetriNetUnfolderBase]: 4078/7404 cut-off events. [2023-11-29 06:57:49,235 INFO L125 PetriNetUnfolderBase]: For 18014/18014 co-relation queries the response was YES. [2023-11-29 06:57:49,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24290 conditions, 7404 events. 4078/7404 cut-off events. For 18014/18014 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 51374 event pairs, 153 based on Foata normal form. 186/7577 useless extension candidates. Maximal degree in co-relation 24253. Up to 1260 conditions per place. [2023-11-29 06:57:49,260 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 221/221 dead transitions. [2023-11-29 06:57:49,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 221 transitions, 2341 flow [2023-11-29 06:57:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:57:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:57:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2023-11-29 06:57:49,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5600961538461539 [2023-11-29 06:57:49,263 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 233 transitions. [2023-11-29 06:57:49,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 233 transitions. [2023-11-29 06:57:49,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:57:49,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 233 transitions. [2023-11-29 06:57:49,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 17.923076923076923) internal successors, (233), 13 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:49,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 32.0) internal successors, (448), 14 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:49,266 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 32.0) internal successors, (448), 14 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:49,267 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 13 states and 233 transitions. [2023-11-29 06:57:49,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 221 transitions, 2341 flow [2023-11-29 06:57:49,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 221 transitions, 1815 flow, removed 4 selfloop flow, removed 30 redundant places. [2023-11-29 06:57:49,310 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2023-11-29 06:57:49,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2023-11-29 06:57:49,311 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2023-11-29 06:57:49,311 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2023-11-29 06:57:49,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:57:49,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-29 06:57:49,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-29 06:57:49,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-29 06:57:49,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-29 06:57:49,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-29 06:57:49,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:57:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:57:49,517 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:49,523 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 06:57:49,523 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:57:49,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:57:49 BasicIcfg [2023-11-29 06:57:49,528 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:57:49,529 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:57:49,529 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:57:49,529 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:57:49,530 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:38" (3/4) ... [2023-11-29 06:57:49,532 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:57:49,535 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-29 06:57:49,535 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-29 06:57:49,539 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-11-29 06:57:49,540 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 06:57:49,540 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:57:49,540 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 06:57:49,622 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:57:49,623 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:57:49,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:57:49,624 INFO L158 Benchmark]: Toolchain (without parser) took 11843.03ms. Allocated memory was 153.1MB in the beginning and 297.8MB in the end (delta: 144.7MB). Free memory was 115.5MB in the beginning and 145.6MB in the end (delta: -30.0MB). Peak memory consumption was 115.4MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,624 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:57:49,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.70ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 95.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.51ms. Allocated memory is still 153.1MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:57:49,625 INFO L158 Benchmark]: Boogie Preprocessor took 48.15ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,626 INFO L158 Benchmark]: RCFGBuilder took 482.14ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 107.4MB in the end (delta: -15.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,626 INFO L158 Benchmark]: TraceAbstraction took 10709.87ms. Allocated memory was 153.1MB in the beginning and 297.8MB in the end (delta: 144.7MB). Free memory was 106.6MB in the beginning and 149.6MB in the end (delta: -43.0MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,627 INFO L158 Benchmark]: Witness Printer took 94.33ms. Allocated memory is still 297.8MB. Free memory was 149.6MB in the beginning and 145.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:57:49,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 458.70ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 95.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.51ms. Allocated memory is still 153.1MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.15ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.14ms. Allocated memory is still 153.1MB. Free memory was 92.1MB in the beginning and 107.4MB in the end (delta: -15.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10709.87ms. Allocated memory was 153.1MB in the beginning and 297.8MB in the end (delta: 144.7MB). Free memory was 106.6MB in the beginning and 149.6MB in the end (delta: -43.0MB). Peak memory consumption was 194.3MB. Max. memory is 16.1GB. * Witness Printer took 94.33ms. Allocated memory is still 297.8MB. Free memory was 149.6MB in the beginning and 145.6MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.6s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1094 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1024 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1863 IncrementalHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 38 mSDtfsCounter, 1863 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=17, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 1370 SizeOfPredicates, 20 NumberOfNonLiveVariables, 842 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 165/449 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 06:57:49,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ebbb0c-076b-47b8-a417-d1bed114310d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE