./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:48,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:48,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:50:48,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:48,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:48,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:48,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:48,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:48,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:48,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:48,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:48,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:48,983 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:48,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:48,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:50:48,985 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:48,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:48,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:48,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:48,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:50:48,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:48,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:50:48,988 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:50:48,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:50:48,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:48,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:50:48,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:48,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:48,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:48,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:48,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:48,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:48,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:48,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:50:48,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:50:48,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:50:48,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:48,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:50:48,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:48,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:48,996 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:48,997 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_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2023-11-06 22:50:49,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:49,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:49,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:49,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:49,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:49,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-06 22:50:52,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:52,835 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:52,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-06 22:50:52,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/data/bb747b0e1/519c084b12874290b22eb96d1c4a5d77/FLAG44e90808d [2023-11-06 22:50:52,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/data/bb747b0e1/519c084b12874290b22eb96d1c4a5d77 [2023-11-06 22:50:52,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:52,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:52,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:52,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:52,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:52,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:52" (1/1) ... [2023-11-06 22:50:52,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3ef6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:52, skipping insertion in model container [2023-11-06 22:50:52,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:52" (1/1) ... [2023-11-06 22:50:52,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:53,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:53,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:53,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:53,512 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:53,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53 WrapperNode [2023-11-06 22:50:53,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:53,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:53,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:53,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:53,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,594 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-11-06 22:50:53,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:53,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:53,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:53,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:53,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:53,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:53,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:53,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:53,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (1/1) ... [2023-11-06 22:50:53,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:53,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:53,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:53,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:50:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:50:53,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:50:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:50:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:50:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:50:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:50:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:53,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:53,699 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:50:53,904 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:53,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:54,182 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:54,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:54,227 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:50:54,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:54 BoogieIcfgContainer [2023-11-06 22:50:54,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:54,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:54,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:54,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:54,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:52" (1/3) ... [2023-11-06 22:50:54,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa800f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:54, skipping insertion in model container [2023-11-06 22:50:54,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:53" (2/3) ... [2023-11-06 22:50:54,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa800f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:54, skipping insertion in model container [2023-11-06 22:50:54,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:54" (3/3) ... [2023-11-06 22:50:54,240 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-11-06 22:50:54,249 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:50:54,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:54,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:50:54,261 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:50:54,339 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:50:54,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,446 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-11-06 22:50:54,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-06 22:50:54,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:54,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 192 flow [2023-11-06 22:50:54,507 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-11-06 22:50:54,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:54,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-06 22:50:54,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-11-06 22:50:58,439 INFO L134 LiptonReduction]: Checked pairs total: 1421 [2023-11-06 22:50:58,439 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-06 22:50:58,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:50:58,463 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ae91713, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:50:58,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 22:50:58,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:50:58,469 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-06 22:50:58,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:58,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:58,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:50:58,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 22:50:58,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 446249637, now seen corresponding path program 1 times [2023-11-06 22:50:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:58,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979400182] [2023-11-06 22:50:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:58,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:58,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979400182] [2023-11-06 22:50:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979400182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:58,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:58,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944597927] [2023-11-06 22:50:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:58,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:58,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-06 22:50:58,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-06 22:50:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:58,998 INFO L124 PetriNetUnfolderBase]: 11/29 cut-off events. [2023-11-06 22:50:58,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:58,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 2 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 18 conditions per place. [2023-11-06 22:50:59,000 INFO L140 encePairwiseOnDemand]: 198/203 looper letters, 9 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-11-06 22:50:59,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 50 flow [2023-11-06 22:50:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-11-06 22:50:59,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2023-11-06 22:50:59,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-11-06 22:50:59,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-11-06 22:50:59,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:59,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-11-06 22:50:59,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,038 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 252 transitions. [2023-11-06 22:50:59,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 50 flow [2023-11-06 22:50:59,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:50:59,043 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 28 flow [2023-11-06 22:50:59,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-11-06 22:50:59,050 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-11-06 22:50:59,050 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 28 flow [2023-11-06 22:50:59,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:59,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:50:59,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:50:59,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 22:50:59,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash 446249714, now seen corresponding path program 1 times [2023-11-06 22:50:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575813935] [2023-11-06 22:50:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:59,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:59,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:59,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575813935] [2023-11-06 22:50:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575813935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:59,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980471354] [2023-11-06 22:50:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:59,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-06 22:50:59,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:59,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-06 22:50:59,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:59,207 INFO L124 PetriNetUnfolderBase]: 9/25 cut-off events. [2023-11-06 22:50:59,207 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:59,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 25 events. 9/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 47 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 46. Up to 13 conditions per place. [2023-11-06 22:50:59,208 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-11-06 22:50:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 50 flow [2023-11-06 22:50:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-06 22:50:59,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072249589490969 [2023-11-06 22:50:59,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-06 22:50:59,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-06 22:50:59,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:59,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-06 22:50:59,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,218 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 28 flow. Second operand 3 states and 248 transitions. [2023-11-06 22:50:59,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 50 flow [2023-11-06 22:50:59,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:59,220 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 26 flow [2023-11-06 22:50:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2023-11-06 22:50:59,221 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2023-11-06 22:50:59,221 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 26 flow [2023-11-06 22:50:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:59,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:50:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:50:59,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 22:50:59,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 446249780, now seen corresponding path program 1 times [2023-11-06 22:50:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428746179] [2023-11-06 22:50:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:59,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428746179] [2023-11-06 22:50:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428746179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:59,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541093315] [2023-11-06 22:50:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:59,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-11-06 22:50:59,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:59,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-11-06 22:50:59,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:59,389 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-06 22:50:59,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:59,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 2 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 36. Up to 11 conditions per place. [2023-11-06 22:50:59,392 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-11-06 22:50:59,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 46 flow [2023-11-06 22:50:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-11-06 22:50:59,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40558292282430214 [2023-11-06 22:50:59,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-11-06 22:50:59,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-11-06 22:50:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:59,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-11-06 22:50:59,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,407 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 26 flow. Second operand 3 states and 247 transitions. [2023-11-06 22:50:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 46 flow [2023-11-06 22:50:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 10 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:59,409 INFO L231 Difference]: Finished difference. Result has 12 places, 8 transitions, 24 flow [2023-11-06 22:50:59,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2023-11-06 22:50:59,411 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -3 predicate places. [2023-11-06 22:50:59,411 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 24 flow [2023-11-06 22:50:59,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:59,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:59,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:50:59,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:50:59,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 22:50:59,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash 948763446, now seen corresponding path program 1 times [2023-11-06 22:50:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657506081] [2023-11-06 22:50:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:50:59,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:50:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:50:59,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:50:59,493 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:50:59,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-06 22:50:59,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-06 22:50:59,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-06 22:50:59,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-06 22:50:59,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-06 22:50:59,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-06 22:50:59,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-06 22:50:59,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-06 22:50:59,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-06 22:50:59,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:50:59,501 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:50:59,505 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:50:59,505 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:50:59,552 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:50:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,628 INFO L124 PetriNetUnfolderBase]: 19/179 cut-off events. [2023-11-06 22:50:59,628 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:59,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 19/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 383 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2023-11-06 22:50:59,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,638 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:59,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,639 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 155 transitions, 320 flow [2023-11-06 22:50:59,686 INFO L124 PetriNetUnfolderBase]: 19/179 cut-off events. [2023-11-06 22:50:59,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:59,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 19/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 383 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2023-11-06 22:50:59,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 10680 [2023-11-06 22:51:04,347 INFO L134 LiptonReduction]: Checked pairs total: 13746 [2023-11-06 22:51:04,348 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-06 22:51:04,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:04,351 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ae91713, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:04,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:51:04,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:04,356 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-06 22:51:04,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:04,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:04,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:04,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:04,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 819348012, now seen corresponding path program 1 times [2023-11-06 22:51:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643468105] [2023-11-06 22:51:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:04,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643468105] [2023-11-06 22:51:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643468105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174677397] [2023-11-06 22:51:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:04,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:04,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:04,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:04,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:04,603 INFO L124 PetriNetUnfolderBase]: 182/348 cut-off events. [2023-11-06 22:51:04,603 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-06 22:51:04,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 348 events. 182/348 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1740 event pairs, 27 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 500. Up to 211 conditions per place. [2023-11-06 22:51:04,612 INFO L140 encePairwiseOnDemand]: 318/326 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-06 22:51:04,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 143 flow [2023-11-06 22:51:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-06 22:51:04,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44171779141104295 [2023-11-06 22:51:04,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-06 22:51:04,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-06 22:51:04,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:04,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-06 22:51:04,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,625 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 78 flow. Second operand 3 states and 432 transitions. [2023-11-06 22:51:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 143 flow [2023-11-06 22:51:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 143 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:04,627 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 70 flow [2023-11-06 22:51:04,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-11-06 22:51:04,630 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-06 22:51:04,630 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 70 flow [2023-11-06 22:51:04,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:04,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:04,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:51:04,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:04,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash 819348056, now seen corresponding path program 1 times [2023-11-06 22:51:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229956044] [2023-11-06 22:51:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:04,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:04,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229956044] [2023-11-06 22:51:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229956044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:04,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069304408] [2023-11-06 22:51:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:04,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:04,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:04,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:04,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:04,871 INFO L124 PetriNetUnfolderBase]: 155/297 cut-off events. [2023-11-06 22:51:04,872 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:51:04,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 297 events. 155/297 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1390 event pairs, 35 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 454. Up to 172 conditions per place. [2023-11-06 22:51:04,875 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-06 22:51:04,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 143 flow [2023-11-06 22:51:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-06 22:51:04,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325153374233129 [2023-11-06 22:51:04,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-06 22:51:04,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-06 22:51:04,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:04,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-06 22:51:04,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,887 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 70 flow. Second operand 3 states and 423 transitions. [2023-11-06 22:51:04,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 143 flow [2023-11-06 22:51:04,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:04,890 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 68 flow [2023-11-06 22:51:04,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-06 22:51:04,892 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-06 22:51:04,893 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 68 flow [2023-11-06 22:51:04,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:04,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:51:04,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:04,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 819348216, now seen corresponding path program 1 times [2023-11-06 22:51:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698498989] [2023-11-06 22:51:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:04,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698498989] [2023-11-06 22:51:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698498989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:04,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104294729] [2023-11-06 22:51:04,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:04,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:05,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 326 [2023-11-06 22:51:05,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:05,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 326 [2023-11-06 22:51:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,118 INFO L124 PetriNetUnfolderBase]: 174/339 cut-off events. [2023-11-06 22:51:05,118 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:51:05,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 339 events. 174/339 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1610 event pairs, 111 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 362. Up to 238 conditions per place. [2023-11-06 22:51:05,122 INFO L140 encePairwiseOnDemand]: 322/326 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-06 22:51:05,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 147 flow [2023-11-06 22:51:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-06 22:51:05,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284253578732106 [2023-11-06 22:51:05,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,133 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 68 flow. Second operand 3 states and 419 transitions. [2023-11-06 22:51:05,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 147 flow [2023-11-06 22:51:05,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:05,142 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 78 flow [2023-11-06 22:51:05,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-11-06 22:51:05,145 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-06 22:51:05,148 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 78 flow [2023-11-06 22:51:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:51:05,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:51:05,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:05,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash -370008286, now seen corresponding path program 1 times [2023-11-06 22:51:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672548646] [2023-11-06 22:51:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:05,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:05,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672548646] [2023-11-06 22:51:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672548646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:05,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057195884] [2023-11-06 22:51:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:05,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:05,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:05,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:05,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:05,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:05,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,295 INFO L124 PetriNetUnfolderBase]: 155/297 cut-off events. [2023-11-06 22:51:05,296 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:51:05,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 297 events. 155/297 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1345 event pairs, 35 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 496. Up to 172 conditions per place. [2023-11-06 22:51:05,299 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-06 22:51:05,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 149 flow [2023-11-06 22:51:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-06 22:51:05,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43149284253578735 [2023-11-06 22:51:05,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-06 22:51:05,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-06 22:51:05,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-06 22:51:05,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,308 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 78 flow. Second operand 3 states and 422 transitions. [2023-11-06 22:51:05,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 149 flow [2023-11-06 22:51:05,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 145 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:05,313 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 74 flow [2023-11-06 22:51:05,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-06 22:51:05,314 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-06 22:51:05,315 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 74 flow [2023-11-06 22:51:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:05,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:51:05,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:05,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,317 INFO L85 PathProgramCache]: Analyzing trace with hash 662700844, now seen corresponding path program 1 times [2023-11-06 22:51:05,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:05,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570227593] [2023-11-06 22:51:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570227593] [2023-11-06 22:51:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570227593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85987144] [2023-11-06 22:51:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:05,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:05,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:05,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:05,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,483 INFO L124 PetriNetUnfolderBase]: 153/296 cut-off events. [2023-11-06 22:51:05,483 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-06 22:51:05,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 296 events. 153/296 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1305 event pairs, 31 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 377. Up to 162 conditions per place. [2023-11-06 22:51:05,487 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-06 22:51:05,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-11-06 22:51:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-06 22:51:05,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284253578732106 [2023-11-06 22:51:05,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-06 22:51:05,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,495 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 74 flow. Second operand 3 states and 419 transitions. [2023-11-06 22:51:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-11-06 22:51:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:05,496 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 72 flow [2023-11-06 22:51:05,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-11-06 22:51:05,497 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-06 22:51:05,497 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 72 flow [2023-11-06 22:51:05,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:05,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:51:05,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:05,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 662701090, now seen corresponding path program 1 times [2023-11-06 22:51:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826306882] [2023-11-06 22:51:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:05,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826306882] [2023-11-06 22:51:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826306882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:05,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357368821] [2023-11-06 22:51:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:05,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:05,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:05,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:05,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:05,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,683 INFO L124 PetriNetUnfolderBase]: 135/266 cut-off events. [2023-11-06 22:51:05,684 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:51:05,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 266 events. 135/266 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1114 event pairs, 31 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 214. Up to 132 conditions per place. [2023-11-06 22:51:05,686 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-06 22:51:05,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 136 flow [2023-11-06 22:51:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-06 22:51:05,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274028629856851 [2023-11-06 22:51:05,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-06 22:51:05,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-06 22:51:05,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-06 22:51:05,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,695 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 72 flow. Second operand 3 states and 418 transitions. [2023-11-06 22:51:05,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 136 flow [2023-11-06 22:51:05,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:05,697 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 70 flow [2023-11-06 22:51:05,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-06 22:51:05,698 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-11-06 22:51:05,699 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 70 flow [2023-11-06 22:51:05,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:05,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:51:05,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:05,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash 662701003, now seen corresponding path program 1 times [2023-11-06 22:51:05,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:05,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108722588] [2023-11-06 22:51:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108722588] [2023-11-06 22:51:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108722588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:05,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656490332] [2023-11-06 22:51:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:05,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:05,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-06 22:51:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:05,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-06 22:51:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,837 INFO L124 PetriNetUnfolderBase]: 117/236 cut-off events. [2023-11-06 22:51:05,837 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-06 22:51:05,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 236 events. 117/236 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 952 event pairs, 31 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 188. Up to 102 conditions per place. [2023-11-06 22:51:05,839 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-06 22:51:05,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 132 flow [2023-11-06 22:51:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-11-06 22:51:05,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263803680981595 [2023-11-06 22:51:05,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-11-06 22:51:05,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-11-06 22:51:05,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-11-06 22:51:05,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,847 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 70 flow. Second operand 3 states and 417 transitions. [2023-11-06 22:51:05,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 132 flow [2023-11-06 22:51:05,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:05,851 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 68 flow [2023-11-06 22:51:05,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-06 22:51:05,852 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-06 22:51:05,853 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 68 flow [2023-11-06 22:51:05,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,853 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:51:05,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:51:05,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:51:05,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1189905370, now seen corresponding path program 1 times [2023-11-06 22:51:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:05,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754502053] [2023-11-06 22:51:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:05,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:05,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:05,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:05,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-06 22:51:05,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-06 22:51:05,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-06 22:51:05,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-06 22:51:05,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-06 22:51:05,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-06 22:51:05,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-06 22:51:05,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-06 22:51:05,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:51:05,895 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:05,897 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:05,897 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:51:05,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:05,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:05,994 INFO L124 PetriNetUnfolderBase]: 28/253 cut-off events. [2023-11-06 22:51:05,994 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:51:05,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 28/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 724 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-11-06 22:51:05,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:06,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:06,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:06,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:06,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:06,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 216 transitions, 450 flow [2023-11-06 22:51:06,048 INFO L124 PetriNetUnfolderBase]: 28/253 cut-off events. [2023-11-06 22:51:06,048 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:51:06,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 28/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 724 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-11-06 22:51:06,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 27000 [2023-11-06 22:51:11,983 INFO L134 LiptonReduction]: Checked pairs total: 37430 [2023-11-06 22:51:11,983 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-11-06 22:51:11,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:11,986 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ae91713, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:11,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:51:11,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:11,989 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-06 22:51:11,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:11,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:11,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:11,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:11,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002059, now seen corresponding path program 1 times [2023-11-06 22:51:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907312304] [2023-11-06 22:51:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:12,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907312304] [2023-11-06 22:51:12,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907312304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:12,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:12,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149322941] [2023-11-06 22:51:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:12,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:12,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:12,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:12,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:12,568 INFO L124 PetriNetUnfolderBase]: 2072/3234 cut-off events. [2023-11-06 22:51:12,569 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-11-06 22:51:12,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 3234 events. 2072/3234 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19902 event pairs, 377 based on Foata normal form. 0/2068 useless extension candidates. Maximal degree in co-relation 1173. Up to 2059 conditions per place. [2023-11-06 22:51:12,605 INFO L140 encePairwiseOnDemand]: 452/462 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 22:51:12,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 230 flow [2023-11-06 22:51:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-11-06 22:51:12,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44083694083694086 [2023-11-06 22:51:12,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-11-06 22:51:12,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-11-06 22:51:12,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:12,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-11-06 22:51:12,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,617 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 611 transitions. [2023-11-06 22:51:12,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 230 flow [2023-11-06 22:51:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 226 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:12,620 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 100 flow [2023-11-06 22:51:12,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-06 22:51:12,621 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:51:12,621 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 100 flow [2023-11-06 22:51:12,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:12,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:51:12,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:12,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002238, now seen corresponding path program 1 times [2023-11-06 22:51:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445541538] [2023-11-06 22:51:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445541538] [2023-11-06 22:51:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445541538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:12,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165351806] [2023-11-06 22:51:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:12,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:12,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:12,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:12,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:12,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:13,124 INFO L124 PetriNetUnfolderBase]: 1797/2845 cut-off events. [2023-11-06 22:51:13,124 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-11-06 22:51:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5562 conditions, 2845 events. 1797/2845 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17106 event pairs, 377 based on Foata normal form. 0/1915 useless extension candidates. Maximal degree in co-relation 4815. Up to 1670 conditions per place. [2023-11-06 22:51:13,155 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-06 22:51:13,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 226 flow [2023-11-06 22:51:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-11-06 22:51:13,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314574314574315 [2023-11-06 22:51:13,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-11-06 22:51:13,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-11-06 22:51:13,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:13,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-11-06 22:51:13,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,166 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 100 flow. Second operand 3 states and 598 transitions. [2023-11-06 22:51:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 226 flow [2023-11-06 22:51:13,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:13,170 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 98 flow [2023-11-06 22:51:13,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-06 22:51:13,172 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-06 22:51:13,172 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 98 flow [2023-11-06 22:51:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:13,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:51:13,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:13,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002370, now seen corresponding path program 1 times [2023-11-06 22:51:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259944306] [2023-11-06 22:51:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259944306] [2023-11-06 22:51:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259944306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:13,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618983745] [2023-11-06 22:51:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:13,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 462 [2023-11-06 22:51:13,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:13,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 462 [2023-11-06 22:51:13,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:13,748 INFO L124 PetriNetUnfolderBase]: 2036/3258 cut-off events. [2023-11-06 22:51:13,748 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-11-06 22:51:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 3258 events. 2036/3258 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19409 event pairs, 1187 based on Foata normal form. 0/2232 useless extension candidates. Maximal degree in co-relation 3554. Up to 2338 conditions per place. [2023-11-06 22:51:13,783 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 22:51:13,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 230 flow [2023-11-06 22:51:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-06 22:51:13,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-06 22:51:13,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-06 22:51:13,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-06 22:51:13,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:13,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-06 22:51:13,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,795 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 98 flow. Second operand 3 states and 594 transitions. [2023-11-06 22:51:13,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 230 flow [2023-11-06 22:51:13,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:13,799 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 108 flow [2023-11-06 22:51:13,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-06 22:51:13,801 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:51:13,801 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 108 flow [2023-11-06 22:51:13,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:13,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:51:13,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:51:13,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:13,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2060597458, now seen corresponding path program 1 times [2023-11-06 22:51:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707546460] [2023-11-06 22:51:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:13,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:13,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707546460] [2023-11-06 22:51:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707546460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:13,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:13,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082993640] [2023-11-06 22:51:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:13,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:13,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:13,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:13,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:14,276 INFO L124 PetriNetUnfolderBase]: 1797/2845 cut-off events. [2023-11-06 22:51:14,277 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-11-06 22:51:14,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 2845 events. 1797/2845 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16847 event pairs, 377 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 5151. Up to 1670 conditions per place. [2023-11-06 22:51:14,307 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-06 22:51:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 232 flow [2023-11-06 22:51:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-11-06 22:51:14,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43073593073593075 [2023-11-06 22:51:14,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-11-06 22:51:14,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-11-06 22:51:14,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:14,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-11-06 22:51:14,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,319 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 108 flow. Second operand 3 states and 597 transitions. [2023-11-06 22:51:14,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 232 flow [2023-11-06 22:51:14,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 228 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:14,322 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 104 flow [2023-11-06 22:51:14,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-06 22:51:14,324 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:51:14,324 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 104 flow [2023-11-06 22:51:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:14,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:14,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:51:14,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:14,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -698186523, now seen corresponding path program 1 times [2023-11-06 22:51:14,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:14,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462529612] [2023-11-06 22:51:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462529612] [2023-11-06 22:51:14,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462529612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085634067] [2023-11-06 22:51:14,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:14,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:14,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:14,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:14,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:14,752 INFO L124 PetriNetUnfolderBase]: 1749/2703 cut-off events. [2023-11-06 22:51:14,752 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2023-11-06 22:51:14,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 2703 events. 1749/2703 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15292 event pairs, 399 based on Foata normal form. 0/1936 useless extension candidates. Maximal degree in co-relation 3661. Up to 1746 conditions per place. [2023-11-06 22:51:14,776 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 38 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-06 22:51:14,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 227 flow [2023-11-06 22:51:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-06 22:51:14,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-06 22:51:14,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-06 22:51:14,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-06 22:51:14,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:14,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-06 22:51:14,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,786 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 104 flow. Second operand 3 states and 594 transitions. [2023-11-06 22:51:14,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 227 flow [2023-11-06 22:51:14,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:14,788 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 102 flow [2023-11-06 22:51:14,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-06 22:51:14,789 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-06 22:51:14,789 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 102 flow [2023-11-06 22:51:14,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:14,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:14,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:51:14,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:14,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash -698186246, now seen corresponding path program 1 times [2023-11-06 22:51:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:14,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404211515] [2023-11-06 22:51:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:14,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:14,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:14,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404211515] [2023-11-06 22:51:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404211515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:14,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060492788] [2023-11-06 22:51:14,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:14,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:14,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:14,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:14,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:14,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:15,226 INFO L124 PetriNetUnfolderBase]: 1515/2373 cut-off events. [2023-11-06 22:51:15,226 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2023-11-06 22:51:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 2373 events. 1515/2373 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13204 event pairs, 375 based on Foata normal form. 0/1754 useless extension candidates. Maximal degree in co-relation 2138. Up to 1416 conditions per place. [2023-11-06 22:51:15,247 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 37 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-06 22:51:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 219 flow [2023-11-06 22:51:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-11-06 22:51:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42784992784992787 [2023-11-06 22:51:15,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-11-06 22:51:15,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-11-06 22:51:15,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:15,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-11-06 22:51:15,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,258 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 102 flow. Second operand 3 states and 593 transitions. [2023-11-06 22:51:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 219 flow [2023-11-06 22:51:15,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:15,261 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 100 flow [2023-11-06 22:51:15,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:51:15,263 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-11-06 22:51:15,263 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 100 flow [2023-11-06 22:51:15,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:15,264 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:15,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:51:15,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:15,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -698186402, now seen corresponding path program 1 times [2023-11-06 22:51:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189469907] [2023-11-06 22:51:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189469907] [2023-11-06 22:51:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189469907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122225801] [2023-11-06 22:51:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:15,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:15,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:15,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:15,638 INFO L124 PetriNetUnfolderBase]: 1305/2115 cut-off events. [2023-11-06 22:51:15,639 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2023-11-06 22:51:15,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2115 events. 1305/2115 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11887 event pairs, 327 based on Foata normal form. 0/1620 useless extension candidates. Maximal degree in co-relation 1867. Up to 1086 conditions per place. [2023-11-06 22:51:15,656 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 36 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-06 22:51:15,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 215 flow [2023-11-06 22:51:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-11-06 22:51:15,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42712842712842713 [2023-11-06 22:51:15,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-11-06 22:51:15,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-11-06 22:51:15,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:15,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-11-06 22:51:15,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,666 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 100 flow. Second operand 3 states and 592 transitions. [2023-11-06 22:51:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 215 flow [2023-11-06 22:51:15,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:15,668 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 98 flow [2023-11-06 22:51:15,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-06 22:51:15,669 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-06 22:51:15,669 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 98 flow [2023-11-06 22:51:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:15,670 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:51:15,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:15,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash -446568882, now seen corresponding path program 1 times [2023-11-06 22:51:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:15,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420803844] [2023-11-06 22:51:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:15,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420803844] [2023-11-06 22:51:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420803844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:15,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:15,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147830440] [2023-11-06 22:51:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:15,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:15,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:15,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:15,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:15,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:15,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:16,047 INFO L124 PetriNetUnfolderBase]: 1255/1977 cut-off events. [2023-11-06 22:51:16,048 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2023-11-06 22:51:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 1977 events. 1255/1977 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10319 event pairs, 305 based on Foata normal form. 0/1531 useless extension candidates. Maximal degree in co-relation 1795. Up to 1110 conditions per place. [2023-11-06 22:51:16,067 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 33 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-06 22:51:16,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 200 flow [2023-11-06 22:51:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-06 22:51:16,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424963924963925 [2023-11-06 22:51:16,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-06 22:51:16,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-06 22:51:16,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:16,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-06 22:51:16,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,077 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 98 flow. Second operand 3 states and 589 transitions. [2023-11-06 22:51:16,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 200 flow [2023-11-06 22:51:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:16,079 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 96 flow [2023-11-06 22:51:16,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-06 22:51:16,080 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-11-06 22:51:16,080 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 96 flow [2023-11-06 22:51:16,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:16,080 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:16,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:51:16,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:16,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -446568483, now seen corresponding path program 1 times [2023-11-06 22:51:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:16,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388980998] [2023-11-06 22:51:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388980998] [2023-11-06 22:51:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388980998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142883980] [2023-11-06 22:51:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:16,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:16,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 462 [2023-11-06 22:51:16,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:16,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 462 [2023-11-06 22:51:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:16,538 INFO L124 PetriNetUnfolderBase]: 1555/2397 cut-off events. [2023-11-06 22:51:16,538 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2023-11-06 22:51:16,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 2397 events. 1555/2397 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12466 event pairs, 945 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 2139. Up to 1678 conditions per place. [2023-11-06 22:51:16,556 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-06 22:51:16,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 204 flow [2023-11-06 22:51:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-11-06 22:51:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227994227994228 [2023-11-06 22:51:16,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-11-06 22:51:16,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-11-06 22:51:16,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:16,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-11-06 22:51:16,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,566 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 96 flow. Second operand 3 states and 586 transitions. [2023-11-06 22:51:16,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 204 flow [2023-11-06 22:51:16,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:16,569 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 106 flow [2023-11-06 22:51:16,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-06 22:51:16,569 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-06 22:51:16,570 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 106 flow [2023-11-06 22:51:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:16,570 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:16,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:51:16,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:16,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -446568630, now seen corresponding path program 1 times [2023-11-06 22:51:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295804804] [2023-11-06 22:51:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:16,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295804804] [2023-11-06 22:51:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295804804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:16,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:16,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764232615] [2023-11-06 22:51:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:16,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:16,924 INFO L124 PetriNetUnfolderBase]: 1255/1977 cut-off events. [2023-11-06 22:51:16,925 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2023-11-06 22:51:16,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 1977 events. 1255/1977 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10153 event pairs, 305 based on Foata normal form. 120/1711 useless extension candidates. Maximal degree in co-relation 1879. Up to 1110 conditions per place. [2023-11-06 22:51:16,940 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 33 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-06 22:51:16,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 204 flow [2023-11-06 22:51:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-11-06 22:51:16,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2023-11-06 22:51:16,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-11-06 22:51:16,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-11-06 22:51:16,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:16,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-11-06 22:51:16,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,968 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 106 flow. Second operand 3 states and 588 transitions. [2023-11-06 22:51:16,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 204 flow [2023-11-06 22:51:16,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:16,972 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 104 flow [2023-11-06 22:51:16,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-06 22:51:16,972 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-06 22:51:16,973 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 104 flow [2023-11-06 22:51:16,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:16,974 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:16,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:51:16,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:16,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash -958719769, now seen corresponding path program 1 times [2023-11-06 22:51:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:16,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613135541] [2023-11-06 22:51:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:16,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:17,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613135541] [2023-11-06 22:51:17,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613135541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:17,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:17,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154824577] [2023-11-06 22:51:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:17,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 462 [2023-11-06 22:51:17,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:17,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:17,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 462 [2023-11-06 22:51:17,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:17,296 INFO L124 PetriNetUnfolderBase]: 1105/1767 cut-off events. [2023-11-06 22:51:17,296 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-11-06 22:51:17,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 1767 events. 1105/1767 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8966 event pairs, 305 based on Foata normal form. 0/1463 useless extension candidates. Maximal degree in co-relation 1659. Up to 900 conditions per place. [2023-11-06 22:51:17,309 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 32 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 22:51:17,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 198 flow [2023-11-06 22:51:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2023-11-06 22:51:17,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235209235209235 [2023-11-06 22:51:17,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2023-11-06 22:51:17,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2023-11-06 22:51:17,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:17,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2023-11-06 22:51:17,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:17,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:17,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:17,319 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 104 flow. Second operand 3 states and 587 transitions. [2023-11-06 22:51:17,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 198 flow [2023-11-06 22:51:17,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:17,323 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2023-11-06 22:51:17,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-06 22:51:17,323 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-11-06 22:51:17,324 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2023-11-06 22:51:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:17,324 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:51:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:51:17,325 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:51:17,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash 329700860, now seen corresponding path program 1 times [2023-11-06 22:51:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:17,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112544277] [2023-11-06 22:51:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:17,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:17,351 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:17,351 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:17,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:51:17,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:51:17,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:51:17,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-06 22:51:17,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:51:17,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:51:17,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:51:17,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:51:17,355 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:17,356 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:17,356 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:51:17,391 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:51:17,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,457 INFO L124 PetriNetUnfolderBase]: 37/327 cut-off events. [2023-11-06 22:51:17,458 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:51:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 327 events. 37/327 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1084 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 261. Up to 10 conditions per place. [2023-11-06 22:51:17,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:17,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 277 transitions, 582 flow [2023-11-06 22:51:17,528 INFO L124 PetriNetUnfolderBase]: 37/327 cut-off events. [2023-11-06 22:51:17,528 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:51:17,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 327 events. 37/327 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1084 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 261. Up to 10 conditions per place. [2023-11-06 22:51:17,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 50640 [2023-11-06 22:51:25,734 INFO L134 LiptonReduction]: Checked pairs total: 73821 [2023-11-06 22:51:25,734 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-11-06 22:51:25,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:25,736 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ae91713, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:25,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:51:25,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:25,739 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-06 22:51:25,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:25,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:25,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:25,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:25,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463307, now seen corresponding path program 1 times [2023-11-06 22:51:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301836137] [2023-11-06 22:51:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301836137] [2023-11-06 22:51:25,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301836137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:25,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189964940] [2023-11-06 22:51:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:25,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:25,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:29,251 INFO L124 PetriNetUnfolderBase]: 20104/28240 cut-off events. [2023-11-06 22:51:29,251 INFO L125 PetriNetUnfolderBase]: For 4193/4193 co-relation queries the response was YES. [2023-11-06 22:51:29,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54858 conditions, 28240 events. 20104/28240 cut-off events. For 4193/4193 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 189667 event pairs, 4003 based on Foata normal form. 0/17894 useless extension candidates. Maximal degree in co-relation 6308. Up to 18425 conditions per place. [2023-11-06 22:51:29,541 INFO L140 encePairwiseOnDemand]: 597/609 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-06 22:51:29,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 321 flow [2023-11-06 22:51:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-11-06 22:51:29,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43240284619594965 [2023-11-06 22:51:29,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-11-06 22:51:29,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-11-06 22:51:29,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:29,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-11-06 22:51:29,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:29,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:29,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:29,556 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 152 flow. Second operand 3 states and 790 transitions. [2023-11-06 22:51:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 321 flow [2023-11-06 22:51:29,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 309 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:29,561 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 130 flow [2023-11-06 22:51:29,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-06 22:51:29,562 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-06 22:51:29,562 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 130 flow [2023-11-06 22:51:29,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:29,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:29,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:29,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:51:29,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:29,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463681, now seen corresponding path program 1 times [2023-11-06 22:51:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372304634] [2023-11-06 22:51:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372304634] [2023-11-06 22:51:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372304634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:29,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:29,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140039247] [2023-11-06 22:51:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:29,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:29,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 609 [2023-11-06 22:51:29,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:29,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:29,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 609 [2023-11-06 22:51:29,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:33,324 INFO L124 PetriNetUnfolderBase]: 25324/35786 cut-off events. [2023-11-06 22:51:33,324 INFO L125 PetriNetUnfolderBase]: For 4802/4802 co-relation queries the response was YES. [2023-11-06 22:51:33,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70662 conditions, 35786 events. 25324/35786 cut-off events. For 4802/4802 co-relation queries the response was YES. Maximal size of possible extension queue 1842. Compared 241694 event pairs, 16008 based on Foata normal form. 0/22638 useless extension candidates. Maximal degree in co-relation 39002. Up to 24679 conditions per place. [2023-11-06 22:51:33,595 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-06 22:51:33,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 321 flow [2023-11-06 22:51:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-11-06 22:51:33,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220032840722496 [2023-11-06 22:51:33,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-11-06 22:51:33,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-11-06 22:51:33,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:33,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-11-06 22:51:33,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,607 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 130 flow. Second operand 3 states and 771 transitions. [2023-11-06 22:51:33,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 321 flow [2023-11-06 22:51:33,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:33,615 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 140 flow [2023-11-06 22:51:33,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-11-06 22:51:33,616 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-06 22:51:33,616 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 140 flow [2023-11-06 22:51:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:33,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:33,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:51:33,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:33,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463485, now seen corresponding path program 1 times [2023-11-06 22:51:33,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:33,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227786597] [2023-11-06 22:51:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:33,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227786597] [2023-11-06 22:51:33,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227786597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:33,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:33,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513132679] [2023-11-06 22:51:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:33,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:33,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:33,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:33,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:33,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:33,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:36,713 INFO L124 PetriNetUnfolderBase]: 20104/28240 cut-off events. [2023-11-06 22:51:36,713 INFO L125 PetriNetUnfolderBase]: For 4069/4069 co-relation queries the response was YES. [2023-11-06 22:51:36,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58925 conditions, 28240 events. 20104/28240 cut-off events. For 4069/4069 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 188832 event pairs, 4003 based on Foata normal form. 1600/20294 useless extension candidates. Maximal degree in co-relation 52576. Up to 18425 conditions per place. [2023-11-06 22:51:36,913 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-06 22:51:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 321 flow [2023-11-06 22:51:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-11-06 22:51:36,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42309797482211275 [2023-11-06 22:51:36,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-11-06 22:51:36,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-11-06 22:51:36,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:36,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-11-06 22:51:36,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:36,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:36,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:36,925 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 140 flow. Second operand 3 states and 773 transitions. [2023-11-06 22:51:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 321 flow [2023-11-06 22:51:36,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:36,931 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 138 flow [2023-11-06 22:51:36,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-06 22:51:36,932 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-06 22:51:36,932 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 138 flow [2023-11-06 22:51:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:36,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:36,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:51:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:51:36,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:36,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash 396835730, now seen corresponding path program 1 times [2023-11-06 22:51:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620910117] [2023-11-06 22:51:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:36,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620910117] [2023-11-06 22:51:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620910117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353185636] [2023-11-06 22:51:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:36,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:36,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:36,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:36,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:36,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:39,415 INFO L124 PetriNetUnfolderBase]: 16891/23251 cut-off events. [2023-11-06 22:51:39,415 INFO L125 PetriNetUnfolderBase]: For 4874/4874 co-relation queries the response was YES. [2023-11-06 22:51:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49440 conditions, 23251 events. 16891/23251 cut-off events. For 4874/4874 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 140113 event pairs, 5501 based on Foata normal form. 0/15965 useless extension candidates. Maximal degree in co-relation 46422. Up to 14900 conditions per place. [2023-11-06 22:51:39,620 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 56 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-06 22:51:39,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 315 flow [2023-11-06 22:51:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-11-06 22:51:39,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225506294471812 [2023-11-06 22:51:39,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-11-06 22:51:39,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-11-06 22:51:39,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:39,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-11-06 22:51:39,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:39,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:39,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:39,634 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 138 flow. Second operand 3 states and 772 transitions. [2023-11-06 22:51:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 315 flow [2023-11-06 22:51:39,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:39,640 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 134 flow [2023-11-06 22:51:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-11-06 22:51:39,641 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-06 22:51:39,641 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 134 flow [2023-11-06 22:51:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:39,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:39,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:51:39,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:39,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1260547317, now seen corresponding path program 1 times [2023-11-06 22:51:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640118579] [2023-11-06 22:51:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640118579] [2023-11-06 22:51:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640118579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:39,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164899909] [2023-11-06 22:51:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:39,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:39,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:39,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:39,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:39,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:42,036 INFO L124 PetriNetUnfolderBase]: 16917/23271 cut-off events. [2023-11-06 22:51:42,036 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2023-11-06 22:51:42,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49460 conditions, 23271 events. 16917/23271 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 141239 event pairs, 4547 based on Foata normal form. 0/15974 useless extension candidates. Maximal degree in co-relation 31877. Up to 15774 conditions per place. [2023-11-06 22:51:42,161 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 54 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-06 22:51:42,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 310 flow [2023-11-06 22:51:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2023-11-06 22:51:42,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42090859332238645 [2023-11-06 22:51:42,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2023-11-06 22:51:42,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2023-11-06 22:51:42,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:42,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2023-11-06 22:51:42,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,172 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 134 flow. Second operand 3 states and 769 transitions. [2023-11-06 22:51:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 310 flow [2023-11-06 22:51:42,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:42,177 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 132 flow [2023-11-06 22:51:42,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-06 22:51:42,177 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2023-11-06 22:51:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 132 flow [2023-11-06 22:51:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:51:42,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:42,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1260547672, now seen corresponding path program 1 times [2023-11-06 22:51:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:42,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880495516] [2023-11-06 22:51:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880495516] [2023-11-06 22:51:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880495516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067506191] [2023-11-06 22:51:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:42,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:42,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:42,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:42,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:44,420 INFO L124 PetriNetUnfolderBase]: 14895/21189 cut-off events. [2023-11-06 22:51:44,420 INFO L125 PetriNetUnfolderBase]: For 3326/3326 co-relation queries the response was YES. [2023-11-06 22:51:44,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43642 conditions, 21189 events. 14895/21189 cut-off events. For 3326/3326 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 137979 event pairs, 3407 based on Foata normal form. 0/14918 useless extension candidates. Maximal degree in co-relation 19400. Up to 12756 conditions per place. [2023-11-06 22:51:44,553 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 53 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-06 22:51:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 302 flow [2023-11-06 22:51:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-11-06 22:51:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42036124794745483 [2023-11-06 22:51:44,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-11-06 22:51:44,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-11-06 22:51:44,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:44,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-11-06 22:51:44,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:44,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:44,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:44,564 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 132 flow. Second operand 3 states and 768 transitions. [2023-11-06 22:51:44,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 302 flow [2023-11-06 22:51:44,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:44,572 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 130 flow [2023-11-06 22:51:44,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-11-06 22:51:44,573 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-11-06 22:51:44,573 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 130 flow [2023-11-06 22:51:44,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:44,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:44,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:44,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:51:44,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:44,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1260547474, now seen corresponding path program 1 times [2023-11-06 22:51:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:44,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522594031] [2023-11-06 22:51:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:44,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522594031] [2023-11-06 22:51:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522594031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:44,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:44,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302115586] [2023-11-06 22:51:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:44,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:44,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:44,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:46,291 INFO L124 PetriNetUnfolderBase]: 12561/18171 cut-off events. [2023-11-06 22:51:46,291 INFO L125 PetriNetUnfolderBase]: For 2954/2954 co-relation queries the response was YES. [2023-11-06 22:51:46,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37120 conditions, 18171 events. 12561/18171 cut-off events. For 2954/2954 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 117887 event pairs, 3407 based on Foata normal form. 0/13238 useless extension candidates. Maximal degree in co-relation 16538. Up to 9738 conditions per place. [2023-11-06 22:51:46,405 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 52 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:51:46,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 298 flow [2023-11-06 22:51:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-11-06 22:51:46,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41981390257252327 [2023-11-06 22:51:46,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-11-06 22:51:46,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-11-06 22:51:46,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:46,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-11-06 22:51:46,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:46,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:46,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:46,417 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 130 flow. Second operand 3 states and 767 transitions. [2023-11-06 22:51:46,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 298 flow [2023-11-06 22:51:46,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:46,426 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 128 flow [2023-11-06 22:51:46,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-06 22:51:46,427 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-06 22:51:46,427 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 128 flow [2023-11-06 22:51:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:46,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:46,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 22:51:46,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:46,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1126128877, now seen corresponding path program 1 times [2023-11-06 22:51:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622349548] [2023-11-06 22:51:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622349548] [2023-11-06 22:51:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622349548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:46,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862997302] [2023-11-06 22:51:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:46,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:46,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:46,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:46,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:46,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:46,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:48,355 INFO L124 PetriNetUnfolderBase]: 12295/17313 cut-off events. [2023-11-06 22:51:48,355 INFO L125 PetriNetUnfolderBase]: For 3532/3532 co-relation queries the response was YES. [2023-11-06 22:51:48,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36262 conditions, 17313 events. 12295/17313 cut-off events. For 3532/3532 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 107539 event pairs, 2457 based on Foata normal form. 0/12669 useless extension candidates. Maximal degree in co-relation 16106. Up to 11130 conditions per place. [2023-11-06 22:51:48,454 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 49 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 22:51:48,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 283 flow [2023-11-06 22:51:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-11-06 22:51:48,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181718664477285 [2023-11-06 22:51:48,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-11-06 22:51:48,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-11-06 22:51:48,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:48,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-11-06 22:51:48,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:48,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:48,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:48,463 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 128 flow. Second operand 3 states and 764 transitions. [2023-11-06 22:51:48,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 283 flow [2023-11-06 22:51:48,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:48,468 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 126 flow [2023-11-06 22:51:48,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:51:48,470 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2023-11-06 22:51:48,470 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 126 flow [2023-11-06 22:51:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:48,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:48,470 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:48,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 22:51:48,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:48,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1126128373, now seen corresponding path program 1 times [2023-11-06 22:51:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560166606] [2023-11-06 22:51:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560166606] [2023-11-06 22:51:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560166606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:48,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:48,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17554569] [2023-11-06 22:51:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:48,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:48,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:48,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 609 [2023-11-06 22:51:48,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:48,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:48,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 609 [2023-11-06 22:51:48,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:50,423 INFO L124 PetriNetUnfolderBase]: 15415/21633 cut-off events. [2023-11-06 22:51:50,424 INFO L125 PetriNetUnfolderBase]: For 4275/4275 co-relation queries the response was YES. [2023-11-06 22:51:50,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45094 conditions, 21633 events. 15415/21633 cut-off events. For 4275/4275 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 133862 event pairs, 9527 based on Foata normal form. 0/15737 useless extension candidates. Maximal degree in co-relation 19962. Up to 15118 conditions per place. [2023-11-06 22:51:50,606 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 51 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-06 22:51:50,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 287 flow [2023-11-06 22:51:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-06 22:51:50,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165298303229338 [2023-11-06 22:51:50,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-06 22:51:50,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-06 22:51:50,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:50,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-06 22:51:50,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:50,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:50,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:50,617 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 126 flow. Second operand 3 states and 761 transitions. [2023-11-06 22:51:50,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 287 flow [2023-11-06 22:51:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:50,631 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 136 flow [2023-11-06 22:51:50,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-06 22:51:50,632 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-06 22:51:50,632 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 136 flow [2023-11-06 22:51:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:50,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:50,633 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:50,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 22:51:50,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:50,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1126128554, now seen corresponding path program 1 times [2023-11-06 22:51:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928644875] [2023-11-06 22:51:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928644875] [2023-11-06 22:51:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928644875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664265686] [2023-11-06 22:51:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:50,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:50,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:50,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:50,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:50,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:52,241 INFO L124 PetriNetUnfolderBase]: 12295/17313 cut-off events. [2023-11-06 22:51:52,241 INFO L125 PetriNetUnfolderBase]: For 3571/3571 co-relation queries the response was YES. [2023-11-06 22:51:52,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37775 conditions, 17313 events. 12295/17313 cut-off events. For 3571/3571 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 107169 event pairs, 2457 based on Foata normal form. 960/14109 useless extension candidates. Maximal degree in co-relation 16862. Up to 11130 conditions per place. [2023-11-06 22:51:52,376 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 49 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 22:51:52,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 287 flow [2023-11-06 22:51:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-11-06 22:51:52,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41762452107279696 [2023-11-06 22:51:52,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-11-06 22:51:52,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-11-06 22:51:52,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:52,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-11-06 22:51:52,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,387 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 136 flow. Second operand 3 states and 763 transitions. [2023-11-06 22:51:52,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 287 flow [2023-11-06 22:51:52,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 283 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:52,402 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 134 flow [2023-11-06 22:51:52,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-06 22:51:52,403 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-06 22:51:52,403 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 134 flow [2023-11-06 22:51:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:52,404 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 22:51:52,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:52,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash -550237763, now seen corresponding path program 1 times [2023-11-06 22:51:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159674280] [2023-11-06 22:51:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159674280] [2023-11-06 22:51:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159674280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827202602] [2023-11-06 22:51:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:52,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:52,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:51:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:52,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:51:52,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:51:52,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827202602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:52,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:51:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:51:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216242334] [2023-11-06 22:51:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:52,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:51:52,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:52,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:54,411 INFO L124 PetriNetUnfolderBase]: 10645/15183 cut-off events. [2023-11-06 22:51:54,412 INFO L125 PetriNetUnfolderBase]: For 3321/3321 co-relation queries the response was YES. [2023-11-06 22:51:54,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32705 conditions, 15183 events. 10645/15183 cut-off events. For 3321/3321 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 93346 event pairs, 2337 based on Foata normal form. 0/11855 useless extension candidates. Maximal degree in co-relation 14607. Up to 6870 conditions per place. [2023-11-06 22:51:54,517 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 67 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-11-06 22:51:54,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 86 transitions, 372 flow [2023-11-06 22:51:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:51:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:51:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1020 transitions. [2023-11-06 22:51:54,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187192118226601 [2023-11-06 22:51:54,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1020 transitions. [2023-11-06 22:51:54,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1020 transitions. [2023-11-06 22:51:54,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:54,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1020 transitions. [2023-11-06 22:51:54,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:54,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:54,529 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:54,529 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 134 flow. Second operand 4 states and 1020 transitions. [2023-11-06 22:51:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 86 transitions, 372 flow [2023-11-06 22:51:54,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:54,547 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 132 flow [2023-11-06 22:51:54,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-06 22:51:54,548 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-06 22:51:54,548 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 132 flow [2023-11-06 22:51:54,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:54,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:54,549 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:54,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:51:54,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2be9bea5-6fd9-4a3a-a163-755e264cfeaf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-06 22:51:54,755 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:54,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash 663541683, now seen corresponding path program 1 times [2023-11-06 22:51:54,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927404264] [2023-11-06 22:51:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:54,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:54,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:54,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927404264] [2023-11-06 22:51:54,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927404264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:54,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:54,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171238446] [2023-11-06 22:51:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:54,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:54,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:54,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:54,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:54,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:54,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:54,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:56,669 INFO L124 PetriNetUnfolderBase]: 10465/14793 cut-off events. [2023-11-06 22:51:56,669 INFO L125 PetriNetUnfolderBase]: For 5133/5133 co-relation queries the response was YES. [2023-11-06 22:51:56,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32795 conditions, 14793 events. 10465/14793 cut-off events. For 5133/5133 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 86885 event pairs, 2773 based on Foata normal form. 0/11621 useless extension candidates. Maximal degree in co-relation 14652. Up to 8460 conditions per place. [2023-11-06 22:51:56,783 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-06 22:51:56,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 280 flow [2023-11-06 22:51:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-11-06 22:51:56,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154351395730706 [2023-11-06 22:51:56,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-11-06 22:51:56,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-11-06 22:51:56,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:56,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-11-06 22:51:56,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:56,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:56,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:56,795 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 132 flow. Second operand 3 states and 759 transitions. [2023-11-06 22:51:56,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 280 flow [2023-11-06 22:51:56,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:51:56,816 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 128 flow [2023-11-06 22:51:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-06 22:51:56,817 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-11-06 22:51:56,817 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 128 flow [2023-11-06 22:51:56,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:56,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:56,818 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-06 22:51:56,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:56,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 663542137, now seen corresponding path program 1 times [2023-11-06 22:51:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630853151] [2023-11-06 22:51:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630853151] [2023-11-06 22:51:56,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630853151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628195863] [2023-11-06 22:51:56,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:56,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:56,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:56,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:58,203 INFO L124 PetriNetUnfolderBase]: 9205/13173 cut-off events. [2023-11-06 22:51:58,203 INFO L125 PetriNetUnfolderBase]: For 3315/3315 co-relation queries the response was YES. [2023-11-06 22:51:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28475 conditions, 13173 events. 9205/13173 cut-off events. For 3315/3315 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 77171 event pairs, 2773 based on Foata normal form. 0/10553 useless extension candidates. Maximal degree in co-relation 12702. Up to 6840 conditions per place. [2023-11-06 22:51:58,314 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 45 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-06 22:51:58,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 268 flow [2023-11-06 22:51:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 758 transitions. [2023-11-06 22:51:58,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41488779419813904 [2023-11-06 22:51:58,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 758 transitions. [2023-11-06 22:51:58,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 758 transitions. [2023-11-06 22:51:58,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:58,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 758 transitions. [2023-11-06 22:51:58,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:58,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:58,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:58,327 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 128 flow. Second operand 3 states and 758 transitions. [2023-11-06 22:51:58,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 268 flow [2023-11-06 22:51:58,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:58,362 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 126 flow [2023-11-06 22:51:58,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-06 22:51:58,362 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-11-06 22:51:58,363 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 126 flow [2023-11-06 22:51:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:58,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:58,363 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 22:51:58,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:51:58,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash 663541963, now seen corresponding path program 1 times [2023-11-06 22:51:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129422866] [2023-11-06 22:51:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:58,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:58,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129422866] [2023-11-06 22:51:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129422866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374791722] [2023-11-06 22:51:58,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:58,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:58,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:58,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:58,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 609 [2023-11-06 22:51:58,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:58,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:58,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 609 [2023-11-06 22:51:58,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand