./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e59f443204e7aefe0ca3d3f3de602e655d8cad2a85fca6022b51e9f5ca070bcf --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:44:55,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:44:55,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:44:55,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:44:55,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:44:55,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:44:55,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:44:55,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:44:55,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:44:55,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:44:55,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:44:55,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:44:55,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:44:55,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:44:55,124 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:44:55,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:44:55,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:44:55,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:44:55,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:44:55,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:44:55,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:44:55,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:44:55,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:44:55,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:44:55,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:44:55,127 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:44:55,128 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:44:55,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:44:55,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:44:55,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:44:55,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:44:55,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:44:55,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:44:55,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:44:55,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:55,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:44:55,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:44:55,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:44:55,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:44:55,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:44:55,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:44:55,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:44:55,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:44:55,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:44:55,136 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59f443204e7aefe0ca3d3f3de602e655d8cad2a85fca6022b51e9f5ca070bcf [2024-10-14 23:44:55,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:44:55,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:44:55,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:44:55,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:44:55,472 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:44:55,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-10-14 23:44:56,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:44:57,194 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:44:57,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-10-14 23:44:57,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e457f9a/3816ea8ca550495fa328d13d8f7ad558/FLAG4c3e88ce8 [2024-10-14 23:44:57,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e457f9a/3816ea8ca550495fa328d13d8f7ad558 [2024-10-14 23:44:57,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:44:57,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:44:57,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:57,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:44:57,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:44:57,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68705197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57, skipping insertion in model container [2024-10-14 23:44:57,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:44:57,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:57,686 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:44:57,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:44:57,792 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:44:57,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57 WrapperNode [2024-10-14 23:44:57,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:44:57,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:57,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:44:57,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:44:57,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,849 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2024-10-14 23:44:57,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:44:57,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:44:57,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:44:57,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:44:57,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,882 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-10-14 23:44:57,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:44:57,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:44:57,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:44:57,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:44:57,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (1/1) ... [2024-10-14 23:44:57,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:44:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:57,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:44:57,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:44:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 23:44:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 23:44:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:44:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:44:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:44:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:44:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:44:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:44:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:44:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:44:58,012 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:44:58,263 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:44:58,265 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:44:58,471 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:44:58,472 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:44:58,632 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:44:58,633 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 23:44:58,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:58 BoogieIcfgContainer [2024-10-14 23:44:58,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:44:58,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:44:58,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:44:58,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:44:58,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:57" (1/3) ... [2024-10-14 23:44:58,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25851359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:58, skipping insertion in model container [2024-10-14 23:44:58,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:57" (2/3) ... [2024-10-14 23:44:58,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25851359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:58, skipping insertion in model container [2024-10-14 23:44:58,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:58" (3/3) ... [2024-10-14 23:44:58,643 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2024-10-14 23:44:58,661 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:44:58,661 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 23:44:58,661 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:44:58,718 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:44:58,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 23 transitions, 50 flow [2024-10-14 23:44:58,787 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-10-14 23:44:58,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:58,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 2/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-10-14 23:44:58,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 23 transitions, 50 flow [2024-10-14 23:44:58,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 23 transitions, 50 flow [2024-10-14 23:44:58,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:44:58,813 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5538a181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:44:58,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 23:44:58,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:44:58,819 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-14 23:44:58,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:58,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:58,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 23:44:58,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:44:58,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash 235472447, now seen corresponding path program 1 times [2024-10-14 23:44:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-10-14 23:44:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-10-14 23:44:59,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934696938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:59,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493412609] [2024-10-14 23:44:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:44:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:44:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:44:59,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 23 [2024-10-14 23:44:59,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 23 [2024-10-14 23:44:59,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:59,308 INFO L124 PetriNetUnfolderBase]: 19/67 cut-off events. [2024-10-14 23:44:59,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:44:59,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 67 events. 19/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 2 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 108. Up to 38 conditions per place. [2024-10-14 23:44:59,312 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 13 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2024-10-14 23:44:59,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 78 flow [2024-10-14 23:44:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:44:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:44:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-10-14 23:44:59,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2024-10-14 23:44:59,327 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 50 flow. Second operand 3 states and 40 transitions. [2024-10-14 23:44:59,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 78 flow [2024-10-14 23:44:59,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:44:59,334 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 48 flow [2024-10-14 23:44:59,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2024-10-14 23:44:59,340 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-10-14 23:44:59,340 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 48 flow [2024-10-14 23:44:59,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,341 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:44:59,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:44:59,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:44:59,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1290304518, now seen corresponding path program 1 times [2024-10-14 23:44:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574006705] [2024-10-14 23:44:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:44:59,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:44:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:44:59,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:44:59,461 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:44:59,463 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-14 23:44:59,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-10-14 23:44:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-10-14 23:44:59,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-10-14 23:44:59,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2024-10-14 23:44:59,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-10-14 23:44:59,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-10-14 23:44:59,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-10-14 23:44:59,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-10-14 23:44:59,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:44:59,471 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 23:44:59,474 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:44:59,475 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:44:59,509 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:44:59,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 92 flow [2024-10-14 23:44:59,527 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-10-14 23:44:59,530 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:44:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 4/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 3 conditions per place. [2024-10-14 23:44:59,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 92 flow [2024-10-14 23:44:59,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 41 transitions, 92 flow [2024-10-14 23:44:59,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:44:59,537 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5538a181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:44:59,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-14 23:44:59,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:44:59,543 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-14 23:44:59,544 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:44:59,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 23:44:59,544 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-14 23:44:59,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 274615833, now seen corresponding path program 1 times [2024-10-14 23:44:59,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146451670] [2024-10-14 23:44:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146451670] [2024-10-14 23:44:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146451670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115634727] [2024-10-14 23:44:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:44:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:44:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:44:59,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-10-14 23:44:59,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:59,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-10-14 23:44:59,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:59,875 INFO L124 PetriNetUnfolderBase]: 388/818 cut-off events. [2024-10-14 23:44:59,875 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-14 23:44:59,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 818 events. 388/818 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4425 event pairs, 144 based on Foata normal form. 54/812 useless extension candidates. Maximal degree in co-relation 1276. Up to 517 conditions per place. [2024-10-14 23:44:59,889 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-10-14 23:44:59,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 177 flow [2024-10-14 23:44:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:44:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:44:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-14 23:44:59,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-10-14 23:44:59,894 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 92 flow. Second operand 3 states and 84 transitions. [2024-10-14 23:44:59,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 177 flow [2024-10-14 23:44:59,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:44:59,896 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 88 flow [2024-10-14 23:44:59,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=88, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-10-14 23:44:59,898 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-10-14 23:44:59,898 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 88 flow [2024-10-14 23:44:59,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:44:59,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:59,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:44:59,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:44:59,900 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-14 23:44:59,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -76843448, now seen corresponding path program 1 times [2024-10-14 23:44:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343311702] [2024-10-14 23:44:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343311702] [2024-10-14 23:44:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343311702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:59,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:44:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:44:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799968107] [2024-10-14 23:44:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:59,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:44:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:44:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:00,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-10-14 23:45:00,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-10-14 23:45:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,169 INFO L124 PetriNetUnfolderBase]: 345/739 cut-off events. [2024-10-14 23:45:00,169 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-14 23:45:00,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 739 events. 345/739 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3874 event pairs, 126 based on Foata normal form. 27/712 useless extension candidates. Maximal degree in co-relation 1187. Up to 447 conditions per place. [2024-10-14 23:45:00,177 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-10-14 23:45:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 177 flow [2024-10-14 23:45:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-14 23:45:00,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-10-14 23:45:00,181 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 88 flow. Second operand 3 states and 78 transitions. [2024-10-14 23:45:00,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 177 flow [2024-10-14 23:45:00,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,183 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 86 flow [2024-10-14 23:45:00,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=86, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-10-14 23:45:00,185 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-10-14 23:45:00,185 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 86 flow [2024-10-14 23:45:00,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,186 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:00,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:45:00,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-14 23:45:00,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -863725506, now seen corresponding path program 1 times [2024-10-14 23:45:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576246545] [2024-10-14 23:45:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:00,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576246545] [2024-10-14 23:45:00,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576246545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:00,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:00,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:00,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152980616] [2024-10-14 23:45:00,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:00,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:00,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-10-14 23:45:00,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-10-14 23:45:00,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:00,393 INFO L124 PetriNetUnfolderBase]: 385/811 cut-off events. [2024-10-14 23:45:00,393 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-10-14 23:45:00,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 811 events. 385/811 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4417 event pairs, 72 based on Foata normal form. 24/796 useless extension candidates. Maximal degree in co-relation 1040. Up to 472 conditions per place. [2024-10-14 23:45:00,398 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-10-14 23:45:00,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 172 flow [2024-10-14 23:45:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-14 23:45:00,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-10-14 23:45:00,400 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 86 flow. Second operand 3 states and 78 transitions. [2024-10-14 23:45:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 172 flow [2024-10-14 23:45:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:00,402 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-10-14 23:45:00,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, 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=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-10-14 23:45:00,403 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2024-10-14 23:45:00,403 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-10-14 23:45:00,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-14 23:45:00,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:45:00,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-14 23:45:00,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1005702635, now seen corresponding path program 1 times [2024-10-14 23:45:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848461720] [2024-10-14 23:45:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:00,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:00,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:00,438 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:00,439 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-14 23:45:00,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-14 23:45:00,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-14 23:45:00,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-14 23:45:00,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-14 23:45:00,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-14 23:45:00,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-14 23:45:00,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-14 23:45:00,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-14 23:45:00,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-14 23:45:00,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-14 23:45:00,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-14 23:45:00,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-14 23:45:00,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:45:00,442 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 23:45:00,442 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:00,442 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 23:45:00,478 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:00,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 136 flow [2024-10-14 23:45:00,489 INFO L124 PetriNetUnfolderBase]: 6/67 cut-off events. [2024-10-14 23:45:00,489 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:45:00,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 6/67 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-10-14 23:45:00,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 59 transitions, 136 flow [2024-10-14 23:45:00,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 136 flow [2024-10-14 23:45:00,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:00,495 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5538a181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:00,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-14 23:45:00,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:00,500 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-14 23:45:00,500 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:45:00,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:00,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 23:45:00,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:00,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 330936165, now seen corresponding path program 1 times [2024-10-14 23:45:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966041914] [2024-10-14 23:45:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966041914] [2024-10-14 23:45:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966041914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:00,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:00,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4804934] [2024-10-14 23:45:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:00,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:00,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-10-14 23:45:00,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:00,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:00,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-10-14 23:45:00,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:01,425 INFO L124 PetriNetUnfolderBase]: 5068/8513 cut-off events. [2024-10-14 23:45:01,426 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-10-14 23:45:01,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15876 conditions, 8513 events. 5068/8513 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 59523 event pairs, 2492 based on Foata normal form. 678/8654 useless extension candidates. Maximal degree in co-relation 10761. Up to 5693 conditions per place. [2024-10-14 23:45:01,489 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 49 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-10-14 23:45:01,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 280 flow [2024-10-14 23:45:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-10-14 23:45:01,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7231638418079096 [2024-10-14 23:45:01,493 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 136 flow. Second operand 3 states and 128 transitions. [2024-10-14 23:45:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 280 flow [2024-10-14 23:45:01,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 276 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:01,498 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 128 flow [2024-10-14 23:45:01,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-10-14 23:45:01,499 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-10-14 23:45:01,500 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 128 flow [2024-10-14 23:45:01,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:01,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:01,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:45:01,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:45:01,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:01,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1669086903, now seen corresponding path program 1 times [2024-10-14 23:45:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565314769] [2024-10-14 23:45:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565314769] [2024-10-14 23:45:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565314769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375849983] [2024-10-14 23:45:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:01,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:01,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-10-14 23:45:01,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:01,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:01,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-10-14 23:45:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:02,372 INFO L124 PetriNetUnfolderBase]: 4505/7983 cut-off events. [2024-10-14 23:45:02,372 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-10-14 23:45:02,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14904 conditions, 7983 events. 4505/7983 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 59700 event pairs, 806 based on Foata normal form. 219/7788 useless extension candidates. Maximal degree in co-relation 13393. Up to 4911 conditions per place. [2024-10-14 23:45:02,451 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 48 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-10-14 23:45:02,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 276 flow [2024-10-14 23:45:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-10-14 23:45:02,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-10-14 23:45:02,455 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 128 flow. Second operand 3 states and 120 transitions. [2024-10-14 23:45:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 276 flow [2024-10-14 23:45:02,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:02,462 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 126 flow [2024-10-14 23:45:02,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-10-14 23:45:02,464 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-10-14 23:45:02,464 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 126 flow [2024-10-14 23:45:02,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:02,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:02,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:45:02,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1938115678, now seen corresponding path program 1 times [2024-10-14 23:45:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864414073] [2024-10-14 23:45:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864414073] [2024-10-14 23:45:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864414073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:02,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:02,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517244365] [2024-10-14 23:45:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:02,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:02,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-10-14 23:45:02,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:02,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:02,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-10-14 23:45:02,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:03,336 INFO L124 PetriNetUnfolderBase]: 5065/8767 cut-off events. [2024-10-14 23:45:03,336 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-10-14 23:45:03,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16542 conditions, 8767 events. 5065/8767 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 64748 event pairs, 824 based on Foata normal form. 216/8558 useless extension candidates. Maximal degree in co-relation 12036. Up to 5648 conditions per place. [2024-10-14 23:45:03,383 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 48 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-14 23:45:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 271 flow [2024-10-14 23:45:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-10-14 23:45:03,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-10-14 23:45:03,385 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 126 flow. Second operand 3 states and 120 transitions. [2024-10-14 23:45:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 271 flow [2024-10-14 23:45:03,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:03,387 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 124 flow [2024-10-14 23:45:03,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=124, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-14 23:45:03,390 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-10-14 23:45:03,390 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 124 flow [2024-10-14 23:45:03,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:03,390 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:03,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:45:03,391 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:03,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -47955729, now seen corresponding path program 1 times [2024-10-14 23:45:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739690394] [2024-10-14 23:45:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739690394] [2024-10-14 23:45:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739690394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296899804] [2024-10-14 23:45:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:03,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:03,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:03,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-10-14 23:45:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-10-14 23:45:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:04,167 INFO L124 PetriNetUnfolderBase]: 4505/7991 cut-off events. [2024-10-14 23:45:04,167 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-10-14 23:45:04,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14906 conditions, 7991 events. 4505/7991 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59377 event pairs, 824 based on Foata normal form. 216/7800 useless extension candidates. Maximal degree in co-relation 9230. Up to 4872 conditions per place. [2024-10-14 23:45:04,219 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-14 23:45:04,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 263 flow [2024-10-14 23:45:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-14 23:45:04,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-10-14 23:45:04,221 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 124 flow. Second operand 3 states and 119 transitions. [2024-10-14 23:45:04,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 263 flow [2024-10-14 23:45:04,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:04,226 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 122 flow [2024-10-14 23:45:04,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=122, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-14 23:45:04,226 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-10-14 23:45:04,227 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 122 flow [2024-10-14 23:45:04,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:04,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:04,227 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:04,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:45:04,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:04,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1111365222, now seen corresponding path program 1 times [2024-10-14 23:45:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:04,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366867055] [2024-10-14 23:45:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:04,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:04,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366867055] [2024-10-14 23:45:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366867055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:04,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070204253] [2024-10-14 23:45:04,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:04,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:04,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-10-14 23:45:04,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:04,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:04,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-10-14 23:45:04,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:05,078 INFO L124 PetriNetUnfolderBase]: 5017/8534 cut-off events. [2024-10-14 23:45:05,078 INFO L125 PetriNetUnfolderBase]: For 736/736 co-relation queries the response was YES. [2024-10-14 23:45:05,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 8534 events. 5017/8534 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 61244 event pairs, 1094 based on Foata normal form. 192/8365 useless extension candidates. Maximal degree in co-relation 10059. Up to 5120 conditions per place. [2024-10-14 23:45:05,149 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-14 23:45:05,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 258 flow [2024-10-14 23:45:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-14 23:45:05,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-10-14 23:45:05,151 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 122 flow. Second operand 3 states and 119 transitions. [2024-10-14 23:45:05,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 258 flow [2024-10-14 23:45:05,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:05,156 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 120 flow [2024-10-14 23:45:05,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=120, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-10-14 23:45:05,157 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-10-14 23:45:05,158 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 120 flow [2024-10-14 23:45:05,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:05,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:05,158 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-14 23:45:05,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:45:05,159 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 23:45:05,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 92567865, now seen corresponding path program 1 times [2024-10-14 23:45:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:05,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796047300] [2024-10-14 23:45:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:05,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:05,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:45:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:45:05,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:45:05,190 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:45:05,190 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-14 23:45:05,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-14 23:45:05,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-14 23:45:05,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-14 23:45:05,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-14 23:45:05,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-14 23:45:05,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-14 23:45:05,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-14 23:45:05,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-14 23:45:05,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-14 23:45:05,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-14 23:45:05,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-14 23:45:05,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-14 23:45:05,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-14 23:45:05,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-14 23:45:05,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-14 23:45:05,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-14 23:45:05,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:45:05,196 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-14 23:45:05,196 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:45:05,197 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 23:45:05,251 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:45:05,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 182 flow [2024-10-14 23:45:05,268 INFO L124 PetriNetUnfolderBase]: 8/88 cut-off events. [2024-10-14 23:45:05,269 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:45:05,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 88 events. 8/88 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 254 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2024-10-14 23:45:05,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 182 flow [2024-10-14 23:45:05,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 77 transitions, 182 flow [2024-10-14 23:45:05,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:45:05,274 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5538a181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:45:05,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 23:45:05,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:45:05,276 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-14 23:45:05,276 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:45:05,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:05,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 23:45:05,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:05,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 404434531, now seen corresponding path program 1 times [2024-10-14 23:45:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986189640] [2024-10-14 23:45:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:05,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:05,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986189640] [2024-10-14 23:45:05,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986189640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:05,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:05,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:05,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071420599] [2024-10-14 23:45:05,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:05,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:05,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:05,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:05,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:05,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:05,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:11,130 INFO L124 PetriNetUnfolderBase]: 56332/84118 cut-off events. [2024-10-14 23:45:11,130 INFO L125 PetriNetUnfolderBase]: For 6419/6419 co-relation queries the response was YES. [2024-10-14 23:45:11,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159450 conditions, 84118 events. 56332/84118 cut-off events. For 6419/6419 co-relation queries the response was YES. Maximal size of possible extension queue 3710. Compared 672684 event pairs, 31380 based on Foata normal form. 7398/87068 useless extension candidates. Maximal degree in co-relation 92390. Up to 57853 conditions per place. [2024-10-14 23:45:12,058 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 67 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-14 23:45:12,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 387 flow [2024-10-14 23:45:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-10-14 23:45:12,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7445887445887446 [2024-10-14 23:45:12,062 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 182 flow. Second operand 3 states and 172 transitions. [2024-10-14 23:45:12,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 387 flow [2024-10-14 23:45:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 375 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 23:45:12,068 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 168 flow [2024-10-14 23:45:12,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-10-14 23:45:12,069 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2024-10-14 23:45:12,069 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 168 flow [2024-10-14 23:45:12,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:12,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:12,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:45:12,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:45:12,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:12,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash -347430953, now seen corresponding path program 1 times [2024-10-14 23:45:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:12,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564136223] [2024-10-14 23:45:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564136223] [2024-10-14 23:45:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564136223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:12,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465999972] [2024-10-14 23:45:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:12,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:12,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:12,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:12,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:12,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:16,959 INFO L124 PetriNetUnfolderBase]: 50073/74907 cut-off events. [2024-10-14 23:45:16,959 INFO L125 PetriNetUnfolderBase]: For 5479/5479 co-relation queries the response was YES. [2024-10-14 23:45:17,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144293 conditions, 74907 events. 50073/74907 cut-off events. For 5479/5479 co-relation queries the response was YES. Maximal size of possible extension queue 3292. Compared 589752 event pairs, 27618 based on Foata normal form. 1755/72634 useless extension candidates. Maximal degree in co-relation 143597. Up to 49839 conditions per place. [2024-10-14 23:45:17,687 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 66 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-10-14 23:45:17,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 375 flow [2024-10-14 23:45:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-10-14 23:45:17,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012987012987013 [2024-10-14 23:45:17,689 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 168 flow. Second operand 3 states and 162 transitions. [2024-10-14 23:45:17,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 375 flow [2024-10-14 23:45:17,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:17,696 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 166 flow [2024-10-14 23:45:17,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-10-14 23:45:17,697 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-10-14 23:45:17,697 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 166 flow [2024-10-14 23:45:17,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:17,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:17,697 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:17,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:45:17,698 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:17,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1078503262, now seen corresponding path program 1 times [2024-10-14 23:45:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219104377] [2024-10-14 23:45:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:17,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219104377] [2024-10-14 23:45:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219104377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:17,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733819046] [2024-10-14 23:45:17,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:17,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:17,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:17,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:17,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:17,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:17,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:23,590 INFO L124 PetriNetUnfolderBase]: 56329/85957 cut-off events. [2024-10-14 23:45:23,590 INFO L125 PetriNetUnfolderBase]: For 6263/6263 co-relation queries the response was YES. [2024-10-14 23:45:23,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164005 conditions, 85957 events. 56329/85957 cut-off events. For 6263/6263 co-relation queries the response was YES. Maximal size of possible extension queue 3509. Compared 728156 event pairs, 9528 based on Foata normal form. 1752/84253 useless extension candidates. Maximal degree in co-relation 120042. Up to 57808 conditions per place. [2024-10-14 23:45:24,179 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 66 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-10-14 23:45:24,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 370 flow [2024-10-14 23:45:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-10-14 23:45:24,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012987012987013 [2024-10-14 23:45:24,181 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 166 flow. Second operand 3 states and 162 transitions. [2024-10-14 23:45:24,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 370 flow [2024-10-14 23:45:24,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:24,189 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 164 flow [2024-10-14 23:45:24,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-10-14 23:45:24,190 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-14 23:45:24,190 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 164 flow [2024-10-14 23:45:24,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:24,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:24,191 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:24,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 23:45:24,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:24,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash -926136755, now seen corresponding path program 1 times [2024-10-14 23:45:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:24,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245037987] [2024-10-14 23:45:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:24,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:45:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245037987] [2024-10-14 23:45:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245037987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:24,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760508076] [2024-10-14 23:45:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:24,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:24,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:24,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:24,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:24,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:24,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:29,611 INFO L124 PetriNetUnfolderBase]: 50073/77955 cut-off events. [2024-10-14 23:45:29,612 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-10-14 23:45:29,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147335 conditions, 77955 events. 50073/77955 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 3188. Compared 671241 event pairs, 9528 based on Foata normal form. 1752/76364 useless extension candidates. Maximal degree in co-relation 91960. Up to 49800 conditions per place. [2024-10-14 23:45:30,123 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 65 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-10-14 23:45:30,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 362 flow [2024-10-14 23:45:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-10-14 23:45:30,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-10-14 23:45:30,124 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 164 flow. Second operand 3 states and 161 transitions. [2024-10-14 23:45:30,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 362 flow [2024-10-14 23:45:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:30,138 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 162 flow [2024-10-14 23:45:30,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-10-14 23:45:30,139 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-10-14 23:45:30,139 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 162 flow [2024-10-14 23:45:30,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:30,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:30,140 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:30,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:45:30,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:30,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1023214588, now seen corresponding path program 1 times [2024-10-14 23:45:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698578459] [2024-10-14 23:45:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698578459] [2024-10-14 23:45:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698578459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689148599] [2024-10-14 23:45:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:30,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:30,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:30,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:30,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:30,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:30,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:35,685 INFO L124 PetriNetUnfolderBase]: 56281/86072 cut-off events. [2024-10-14 23:45:35,685 INFO L125 PetriNetUnfolderBase]: For 6306/6306 co-relation queries the response was YES. [2024-10-14 23:45:35,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164012 conditions, 86072 events. 56281/86072 cut-off events. For 6306/6306 co-relation queries the response was YES. Maximal size of possible extension queue 3480. Compared 726224 event pairs, 9798 based on Foata normal form. 1728/84331 useless extension candidates. Maximal degree in co-relation 102399. Up to 57280 conditions per place. [2024-10-14 23:45:36,176 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-10-14 23:45:36,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 357 flow [2024-10-14 23:45:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-10-14 23:45:36,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-10-14 23:45:36,178 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 162 flow. Second operand 3 states and 161 transitions. [2024-10-14 23:45:36,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 357 flow [2024-10-14 23:45:36,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:36,188 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 160 flow [2024-10-14 23:45:36,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-10-14 23:45:36,189 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-10-14 23:45:36,189 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 160 flow [2024-10-14 23:45:36,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:36,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:36,189 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:45:36,190 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:36,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1654880716, now seen corresponding path program 1 times [2024-10-14 23:45:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:36,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983282074] [2024-10-14 23:45:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:36,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 23:45:36,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983282074] [2024-10-14 23:45:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983282074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:45:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406223548] [2024-10-14 23:45:36,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:36,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:45:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:45:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:45:36,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 77 [2024-10-14 23:45:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:36,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:36,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 77 [2024-10-14 23:45:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:45:40,868 INFO L124 PetriNetUnfolderBase]: 50073/78136 cut-off events. [2024-10-14 23:45:40,869 INFO L125 PetriNetUnfolderBase]: For 5618/5618 co-relation queries the response was YES. [2024-10-14 23:45:41,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147468 conditions, 78136 events. 50073/78136 cut-off events. For 5618/5618 co-relation queries the response was YES. Maximal size of possible extension queue 3156. Compared 670313 event pairs, 9798 based on Foata normal form. 1728/76539 useless extension candidates. Maximal degree in co-relation 92059. Up to 49344 conditions per place. [2024-10-14 23:45:41,332 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 64 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-10-14 23:45:41,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 349 flow [2024-10-14 23:45:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:45:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:45:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-10-14 23:45:41,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926406926406926 [2024-10-14 23:45:41,333 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 160 flow. Second operand 3 states and 160 transitions. [2024-10-14 23:45:41,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 349 flow [2024-10-14 23:45:41,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:45:41,350 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 158 flow [2024-10-14 23:45:41,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-14 23:45:41,350 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-14 23:45:41,350 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 158 flow [2024-10-14 23:45:41,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:41,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:45:41,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:45:41,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 23:45:41,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-14 23:45:41,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:45:41,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2136490267, now seen corresponding path program 1 times [2024-10-14 23:45:41,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:45:41,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663060668] [2024-10-14 23:45:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:45:41,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:45:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:45:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:45:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:45:41,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663060668] [2024-10-14 23:45:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663060668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:45:41,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:45:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:45:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330892895] [2024-10-14 23:45:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:45:41,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:45:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:45:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:45:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:45:41,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-14 23:45:41,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:45:41,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:45:41,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-14 23:45:41,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand