./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/stack_longer-1.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/stack_longer-1.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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:43:36,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:43:36,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:43:36,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:43:36,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:43:36,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:43:36,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:43:36,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:43:36,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:43:36,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:43:36,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:43:36,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:43:36,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:43:36,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:43:36,185 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:43:36,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:43:36,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:43:36,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:43:36,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:43:36,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:43:36,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:43:36,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:43:36,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:43:36,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:43:36,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:43:36,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:43:36,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:43:36,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:43:36,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:43:36,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:43:36,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:43:36,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:43:36,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:43:36,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:43:36,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:43:36,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:43:36,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:43:36,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:43:36,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:43:36,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-14 23:43:36,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:43:36,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:43:36,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:43:36,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:43:36,438 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:43:36,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-14 23:43:37,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:43:38,003 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:43:38,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-14 23:43:38,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd018b4da/40df6b7e5b20459c9729c9442815818c/FLAG5ac6fa985 [2024-10-14 23:43:38,049 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd018b4da/40df6b7e5b20459c9729c9442815818c [2024-10-14 23:43:38,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:43:38,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:43:38,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:38,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:43:38,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:43:38,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3347ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38, skipping insertion in model container [2024-10-14 23:43:38,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:43:38,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:38,447 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:43:38,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:38,594 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:43:38,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38 WrapperNode [2024-10-14 23:43:38,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:38,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:38,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:43:38,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:43:38,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,645 INFO L138 Inliner]: procedures = 277, calls = 32, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 165 [2024-10-14 23:43:38,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:38,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:43:38,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:43:38,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:43:38,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,678 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-14 23:43:38,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:43:38,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:43:38,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:43:38,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:43:38,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (1/1) ... [2024-10-14 23:43:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:43:38,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:38,735 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 23:43:38,737 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 23:43:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 23:43:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 23:43:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 23:43:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 23:43:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:43:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:43:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:43:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:43:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:43:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:43:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:43:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:43:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:43:38,781 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 23:43:38,913 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:43:38,916 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:43:39,169 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:43:39,169 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:43:39,350 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:43:39,351 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 23:43:39,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:39 BoogieIcfgContainer [2024-10-14 23:43:39,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:43:39,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:43:39,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:43:39,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:43:39,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:38" (1/3) ... [2024-10-14 23:43:39,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4143beec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:39, skipping insertion in model container [2024-10-14 23:43:39,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:38" (2/3) ... [2024-10-14 23:43:39,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4143beec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:39, skipping insertion in model container [2024-10-14 23:43:39,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:39" (3/3) ... [2024-10-14 23:43:39,357 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-14 23:43:39,371 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:43:39,371 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-14 23:43:39,371 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:43:39,412 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 23:43:39,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-14 23:43:39,462 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-14 23:43:39,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:43:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-14 23:43:39,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-14 23:43:39,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-14 23:43:39,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:43:39,480 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;@6a662d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:43:39,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 23:43:39,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:43:39,486 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-14 23:43:39,486 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:43:39,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:39,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:39,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:39,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash 461954200, now seen corresponding path program 1 times [2024-10-14 23:43:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566254399] [2024-10-14 23:43:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:39,727 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 23:43:39,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566254399] [2024-10-14 23:43:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566254399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:43:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679508723] [2024-10-14 23:43:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:39,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:39,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:39,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:39,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:43:39,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:39,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:39,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:40,154 INFO L124 PetriNetUnfolderBase]: 708/1406 cut-off events. [2024-10-14 23:43:40,155 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-14 23:43:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1406 events. 708/1406 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7666 event pairs, 143 based on Foata normal form. 40/1294 useless extension candidates. Maximal degree in co-relation 2468. Up to 781 conditions per place. [2024-10-14 23:43:40,169 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-14 23:43:40,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-10-14 23:43:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-14 23:43:40,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-14 23:43:40,182 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-10-14 23:43:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-10-14 23:43:40,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:40,193 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-10-14 23:43:40,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-14 23:43:40,198 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-14 23:43:40,198 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-10-14 23:43:40,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:43:40,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:40,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:40,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:43:40,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:40,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash 490786625, now seen corresponding path program 1 times [2024-10-14 23:43:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:40,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670101602] [2024-10-14 23:43:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:40,291 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 23:43:40,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:40,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670101602] [2024-10-14 23:43:40,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670101602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:40,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:40,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:43:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206623010] [2024-10-14 23:43:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:40,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:40,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:40,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:40,518 INFO L124 PetriNetUnfolderBase]: 746/1508 cut-off events. [2024-10-14 23:43:40,518 INFO L125 PetriNetUnfolderBase]: For 346/350 co-relation queries the response was YES. [2024-10-14 23:43:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1508 events. 746/1508 cut-off events. For 346/350 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8354 event pairs, 195 based on Foata normal form. 64/1451 useless extension candidates. Maximal degree in co-relation 2800. Up to 839 conditions per place. [2024-10-14 23:43:40,527 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-10-14 23:43:40,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-10-14 23:43:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-14 23:43:40,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 23:43:40,530 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-10-14 23:43:40,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-10-14 23:43:40,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:43:40,535 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-10-14 23:43:40,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-14 23:43:40,535 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-14 23:43:40,535 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-10-14 23:43:40,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:40,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:40,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:40,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:43:40,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:40,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1965514119, now seen corresponding path program 1 times [2024-10-14 23:43:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882977533] [2024-10-14 23:43:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:40,619 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 23:43:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:40,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882977533] [2024-10-14 23:43:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882977533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:40,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:40,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620528399] [2024-10-14 23:43:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:40,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:40,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:40,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:40,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:40,901 INFO L124 PetriNetUnfolderBase]: 1250/2479 cut-off events. [2024-10-14 23:43:40,901 INFO L125 PetriNetUnfolderBase]: For 1160/1168 co-relation queries the response was YES. [2024-10-14 23:43:40,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 2479 events. 1250/2479 cut-off events. For 1160/1168 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15009 event pairs, 528 based on Foata normal form. 68/2430 useless extension candidates. Maximal degree in co-relation 5209. Up to 1228 conditions per place. [2024-10-14 23:43:40,912 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-10-14 23:43:40,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-10-14 23:43:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-14 23:43:40,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-14 23:43:40,915 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-10-14 23:43:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-10-14 23:43:40,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:40,925 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-10-14 23:43:40,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-10-14 23:43:40,925 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-10-14 23:43:40,925 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-10-14 23:43:40,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:40,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:40,926 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:40,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:43:40,926 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:40,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1652043344, now seen corresponding path program 1 times [2024-10-14 23:43:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:40,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598908830] [2024-10-14 23:43:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:40,998 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 23:43:40,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598908830] [2024-10-14 23:43:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598908830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:40,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:40,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:40,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226586531] [2024-10-14 23:43:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:41,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:41,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:41,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:41,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:41,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:41,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:41,370 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2024-10-14 23:43:41,370 INFO L125 PetriNetUnfolderBase]: For 2145/2317 co-relation queries the response was YES. [2024-10-14 23:43:41,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3261 events. 1711/3261 cut-off events. For 2145/2317 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20149 event pairs, 635 based on Foata normal form. 106/3248 useless extension candidates. Maximal degree in co-relation 7134. Up to 1454 conditions per place. [2024-10-14 23:43:41,388 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-14 23:43:41,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-10-14 23:43:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-14 23:43:41,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-14 23:43:41,389 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-10-14 23:43:41,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-10-14 23:43:41,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:41,395 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-10-14 23:43:41,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-10-14 23:43:41,396 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-10-14 23:43:41,396 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-10-14 23:43:41,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:41,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:41,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:41,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:43:41,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:41,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1387941989, now seen corresponding path program 1 times [2024-10-14 23:43:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050348392] [2024-10-14 23:43:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:41,489 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 23:43:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050348392] [2024-10-14 23:43:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050348392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820041544] [2024-10-14 23:43:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:43:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:43:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:43:41,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-14 23:43:41,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:43:41,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-14 23:43:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:41,692 INFO L124 PetriNetUnfolderBase]: 823/1824 cut-off events. [2024-10-14 23:43:41,692 INFO L125 PetriNetUnfolderBase]: For 1152/1228 co-relation queries the response was YES. [2024-10-14 23:43:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 1824 events. 823/1824 cut-off events. For 1152/1228 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10616 event pairs, 210 based on Foata normal form. 92/1883 useless extension candidates. Maximal degree in co-relation 4330. Up to 954 conditions per place. [2024-10-14 23:43:41,700 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-10-14 23:43:41,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-10-14 23:43:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:43:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:43:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-14 23:43:41,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 23:43:41,702 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-10-14 23:43:41,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-10-14 23:43:41,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:41,708 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-10-14 23:43:41,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-10-14 23:43:41,709 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-14 23:43:41,710 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-10-14 23:43:41,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:43:41,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:41,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:41,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:43:41,710 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:41,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash -358145564, now seen corresponding path program 1 times [2024-10-14 23:43:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:41,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135894792] [2024-10-14 23:43:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135894792] [2024-10-14 23:43:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135894792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204216839] [2024-10-14 23:43:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:41,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:41,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:41,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:43:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:41,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:43:41,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:41,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:41,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204216839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:41,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:41,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:43:41,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983164652] [2024-10-14 23:43:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:41,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:41,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:41,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:41,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:41,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:41,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:42,276 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2024-10-14 23:43:42,277 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2024-10-14 23:43:42,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2777 events. 1302/2777 cut-off events. For 1364/1474 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17033 event pairs, 273 based on Foata normal form. 18/2744 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2024-10-14 23:43:42,293 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-14 23:43:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-10-14 23:43:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:43:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:43:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-10-14 23:43:42,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-14 23:43:42,296 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-10-14 23:43:42,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-10-14 23:43:42,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:42,302 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-10-14 23:43:42,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-10-14 23:43:42,305 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-10-14 23:43:42,305 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-10-14 23:43:42,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:42,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:42,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:42,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:43:42,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 23:43:42,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1415219994, now seen corresponding path program 1 times [2024-10-14 23:43:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800993440] [2024-10-14 23:43:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:42,572 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 23:43:42,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800993440] [2024-10-14 23:43:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800993440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:42,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:42,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:43:42,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841067974] [2024-10-14 23:43:42,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:42,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:43:42,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:42,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:42,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:42,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:42,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:43,018 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2024-10-14 23:43:43,018 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2024-10-14 23:43:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 3777 events. 1824/3777 cut-off events. For 2941/3113 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24295 event pairs, 351 based on Foata normal form. 26/3786 useless extension candidates. Maximal degree in co-relation 7956. Up to 1716 conditions per place. [2024-10-14 23:43:43,049 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-10-14 23:43:43,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-10-14 23:43:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:43:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:43:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-10-14 23:43:43,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-10-14 23:43:43,051 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-10-14 23:43:43,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-10-14 23:43:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:43,060 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-10-14 23:43:43,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-10-14 23:43:43,061 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-10-14 23:43:43,061 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-10-14 23:43:43,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:43,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:43,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:43,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:43:43,065 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:43,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash -163740156, now seen corresponding path program 1 times [2024-10-14 23:43:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848692985] [2024-10-14 23:43:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:43,136 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 23:43:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:43,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848692985] [2024-10-14 23:43:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848692985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:43,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:43,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:43:43,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346823539] [2024-10-14 23:43:43,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:43,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:43,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:43:43,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:43,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:43,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:43,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:43,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:43,643 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2024-10-14 23:43:43,643 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2024-10-14 23:43:43,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4739 events. 2301/4739 cut-off events. For 4939/5173 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32233 event pairs, 536 based on Foata normal form. 24/4736 useless extension candidates. Maximal degree in co-relation 9575. Up to 2363 conditions per place. [2024-10-14 23:43:43,667 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-10-14 23:43:43,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-10-14 23:43:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 23:43:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 23:43:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-10-14 23:43:43,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-14 23:43:43,671 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-10-14 23:43:43,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-10-14 23:43:43,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:43,682 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-10-14 23:43:43,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-10-14 23:43:43,683 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-14 23:43:43,683 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-10-14 23:43:43,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:43,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:43,683 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:43,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:43:43,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:43,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1552758543, now seen corresponding path program 1 times [2024-10-14 23:43:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:43,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391388139] [2024-10-14 23:43:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391388139] [2024-10-14 23:43:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391388139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508036092] [2024-10-14 23:43:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:43,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:43,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:43,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:43,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:43:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:43,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:43:43,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:43,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508036092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 23:43:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791102674] [2024-10-14 23:43:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:43,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:43:43,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-14 23:43:43,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:43,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:43,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-14 23:43:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:44,407 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-10-14 23:43:44,408 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-10-14 23:43:44,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32574 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2024-10-14 23:43:44,435 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-10-14 23:43:44,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-10-14 23:43:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-14 23:43:44,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-14 23:43:44,437 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-10-14 23:43:44,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-10-14 23:43:44,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:44,450 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-10-14 23:43:44,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-14 23:43:44,452 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-10-14 23:43:44,452 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-10-14 23:43:44,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:44,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:44,453 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:44,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:43:44,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-14 23:43:44,653 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:44,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1782389887, now seen corresponding path program 1 times [2024-10-14 23:43:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:44,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693259752] [2024-10-14 23:43:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693259752] [2024-10-14 23:43:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693259752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963052150] [2024-10-14 23:43:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:44,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:44,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:44,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:44,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:43:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:44,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:43:44,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:44,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:43:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963052150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:43:44,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:43:44,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-14 23:43:44,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531423309] [2024-10-14 23:43:44,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:43:44,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 23:43:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:44,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 23:43:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-14 23:43:44,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:43:44,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 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 23:43:44,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:44,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:43:44,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:45,595 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-10-14 23:43:45,595 INFO L125 PetriNetUnfolderBase]: For 12128/12358 co-relation queries the response was YES. [2024-10-14 23:43:45,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12128/12358 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46752 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2024-10-14 23:43:45,719 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-10-14 23:43:45,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-10-14 23:43:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 23:43:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 23:43:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-10-14 23:43:45,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-10-14 23:43:45,724 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-10-14 23:43:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-10-14 23:43:45,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:45,792 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-10-14 23:43:45,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-10-14 23:43:45,797 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-14 23:43:45,797 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-10-14 23:43:45,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 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 23:43:45,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:45,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:45,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:43:45,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:45,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:46,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash -922146348, now seen corresponding path program 1 times [2024-10-14 23:43:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902537280] [2024-10-14 23:43:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:46,080 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 23:43:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902537280] [2024-10-14 23:43:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902537280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:43:46,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511480026] [2024-10-14 23:43:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:46,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:43:46,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:46,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:46,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:46,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:46,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:46,994 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2024-10-14 23:43:46,995 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2024-10-14 23:43:47,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20153 conditions, 6946 events. 3469/6946 cut-off events. For 13979/14366 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45996 event pairs, 727 based on Foata normal form. 67/6990 useless extension candidates. Maximal degree in co-relation 17120. Up to 3973 conditions per place. [2024-10-14 23:43:47,025 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-10-14 23:43:47,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-10-14 23:43:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 23:43:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 23:43:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-10-14 23:43:47,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-10-14 23:43:47,026 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-10-14 23:43:47,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-10-14 23:43:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:47,049 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-10-14 23:43:47,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-10-14 23:43:47,050 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-10-14 23:43:47,050 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-10-14 23:43:47,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:47,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:47,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:47,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:43:47,050 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:47,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -780977057, now seen corresponding path program 1 times [2024-10-14 23:43:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161481308] [2024-10-14 23:43:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:47,111 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 23:43:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161481308] [2024-10-14 23:43:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161481308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:43:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839626291] [2024-10-14 23:43:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:47,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:43:47,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:47,849 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2024-10-14 23:43:47,849 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2024-10-14 23:43:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7161 events. 3507/7161 cut-off events. For 14979/15265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49192 event pairs, 947 based on Foata normal form. 12/7148 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place. [2024-10-14 23:43:48,007 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2024-10-14 23:43:48,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2024-10-14 23:43:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:43:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:43:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-10-14 23:43:48,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-14 23:43:48,009 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2024-10-14 23:43:48,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2024-10-14 23:43:48,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:48,041 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2024-10-14 23:43:48,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2024-10-14 23:43:48,042 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-10-14 23:43:48,042 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2024-10-14 23:43:48,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 23:43:48,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:48,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:48,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:43:48,042 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:48,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash 890875085, now seen corresponding path program 1 times [2024-10-14 23:43:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726979603] [2024-10-14 23:43:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:43:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726979603] [2024-10-14 23:43:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726979603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:48,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:48,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720316928] [2024-10-14 23:43:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:48,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:48,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-14 23:43:48,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:48,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:48,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-14 23:43:48,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:48,952 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2024-10-14 23:43:48,952 INFO L125 PetriNetUnfolderBase]: For 16088/16336 co-relation queries the response was YES. [2024-10-14 23:43:48,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 7263 events. 3533/7263 cut-off events. For 16088/16336 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 50202 event pairs, 590 based on Foata normal form. 0/7262 useless extension candidates. Maximal degree in co-relation 18131. Up to 3403 conditions per place. [2024-10-14 23:43:48,998 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2024-10-14 23:43:48,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2024-10-14 23:43:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-14 23:43:49,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-14 23:43:49,004 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2024-10-14 23:43:49,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2024-10-14 23:43:49,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:49,041 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2024-10-14 23:43:49,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-10-14 23:43:49,042 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-10-14 23:43:49,043 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2024-10-14 23:43:49,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:49,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:49,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:49,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:43:49,044 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 408893580, now seen corresponding path program 1 times [2024-10-14 23:43:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032270847] [2024-10-14 23:43:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:49,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032270847] [2024-10-14 23:43:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032270847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337729040] [2024-10-14 23:43:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:49,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:49,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:49,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:43:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:49,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:43:49,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:49,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:43:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337729040] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:43:49,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:43:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-14 23:43:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33913797] [2024-10-14 23:43:49,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:43:49,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 23:43:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 23:43:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-14 23:43:49,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-14 23:43:49,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 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 23:43:49,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:49,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-14 23:43:49,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:50,590 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2024-10-14 23:43:50,590 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2024-10-14 23:43:50,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27014 conditions, 8694 events. 4337/8694 cut-off events. For 19505/19861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 58759 event pairs, 927 based on Foata normal form. 39/8708 useless extension candidates. Maximal degree in co-relation 23704. Up to 4364 conditions per place. [2024-10-14 23:43:50,652 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-10-14 23:43:50,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2024-10-14 23:43:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 23:43:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 23:43:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2024-10-14 23:43:50,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-10-14 23:43:50,656 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2024-10-14 23:43:50,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2024-10-14 23:43:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:50,700 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2024-10-14 23:43:50,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-10-14 23:43:50,701 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2024-10-14 23:43:50,701 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2024-10-14 23:43:50,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 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 23:43:50,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:50,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:50,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 23:43:50,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:50,903 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:50,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1775413116, now seen corresponding path program 1 times [2024-10-14 23:43:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736838182] [2024-10-14 23:43:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:51,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:51,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736838182] [2024-10-14 23:43:51,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736838182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:51,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205488684] [2024-10-14 23:43:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:51,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:51,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:43:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:51,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:43:51,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:51,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:51,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205488684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:51,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:51,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 23:43:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729513556] [2024-10-14 23:43:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:51,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:51,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:43:51,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-14 23:43:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 23:43:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:51,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-14 23:43:51,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:52,015 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2024-10-14 23:43:52,015 INFO L125 PetriNetUnfolderBase]: For 24971/25025 co-relation queries the response was YES. [2024-10-14 23:43:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29817 conditions, 9400 events. 4901/9400 cut-off events. For 24971/25025 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 62811 event pairs, 712 based on Foata normal form. 262/9400 useless extension candidates. Maximal degree in co-relation 28870. Up to 5331 conditions per place. [2024-10-14 23:43:52,066 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-10-14 23:43:52,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2024-10-14 23:43:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-14 23:43:52,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-14 23:43:52,067 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2024-10-14 23:43:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2024-10-14 23:43:52,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:52,109 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2024-10-14 23:43:52,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-14 23:43:52,110 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-10-14 23:43:52,110 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2024-10-14 23:43:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 23:43:52,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:52,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 23:43:52,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 23:43:52,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 23:43:52,311 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:52,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 796768740, now seen corresponding path program 1 times [2024-10-14 23:43:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557439001] [2024-10-14 23:43:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:43:52,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:52,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557439001] [2024-10-14 23:43:52,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557439001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:52,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:52,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:52,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146228266] [2024-10-14 23:43:52,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:52,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:52,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:52,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-14 23:43:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 23:43:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-14 23:43:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:53,365 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2024-10-14 23:43:53,366 INFO L125 PetriNetUnfolderBase]: For 23394/23398 co-relation queries the response was YES. [2024-10-14 23:43:53,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 9002 events. 4541/9002 cut-off events. For 23394/23398 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60833 event pairs, 901 based on Foata normal form. 262/9238 useless extension candidates. Maximal degree in co-relation 27049. Up to 4371 conditions per place. [2024-10-14 23:43:53,433 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-10-14 23:43:53,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2024-10-14 23:43:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-14 23:43:53,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-14 23:43:53,434 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2024-10-14 23:43:53,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2024-10-14 23:43:53,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:53,493 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2024-10-14 23:43:53,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-14 23:43:53,494 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-10-14 23:43:53,494 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2024-10-14 23:43:53,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 23:43:53,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:53,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:53,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:43:53,495 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:53,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 975367758, now seen corresponding path program 1 times [2024-10-14 23:43:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:53,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964713020] [2024-10-14 23:43:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:53,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964713020] [2024-10-14 23:43:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964713020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540292769] [2024-10-14 23:43:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:53,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:53,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:53,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:43:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:53,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:43:53,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 23:43:53,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:53,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540292769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:53,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:53,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-14 23:43:53,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609532711] [2024-10-14 23:43:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:53,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:53,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:53,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:53,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 23:43:53,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:53,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:53,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:54,879 INFO L124 PetriNetUnfolderBase]: 4880/9556 cut-off events. [2024-10-14 23:43:54,880 INFO L125 PetriNetUnfolderBase]: For 27557/27557 co-relation queries the response was YES. [2024-10-14 23:43:54,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31360 conditions, 9556 events. 4880/9556 cut-off events. For 27557/27557 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 65247 event pairs, 1082 based on Foata normal form. 111/9636 useless extension candidates. Maximal degree in co-relation 29651. Up to 3106 conditions per place. [2024-10-14 23:43:54,962 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-10-14 23:43:54,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2024-10-14 23:43:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:43:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:43:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-10-14 23:43:54,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-10-14 23:43:54,964 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2024-10-14 23:43:54,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2024-10-14 23:43:55,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:55,023 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2024-10-14 23:43:55,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1345, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-10-14 23:43:55,024 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-10-14 23:43:55,024 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2024-10-14 23:43:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 23:43:55,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:55,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:55,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:43:55,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 23:43:55,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:55,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 838460339, now seen corresponding path program 1 times [2024-10-14 23:43:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846879596] [2024-10-14 23:43:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:55,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846879596] [2024-10-14 23:43:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846879596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988852983] [2024-10-14 23:43:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:55,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:55,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:55,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:55,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:43:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:55,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:43:55,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 23:43:55,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988852983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:55,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-14 23:43:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647677819] [2024-10-14 23:43:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:55,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:55,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:43:55,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1345 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 23:43:55,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:55,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:43:55,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:57,092 INFO L124 PetriNetUnfolderBase]: 5755/11245 cut-off events. [2024-10-14 23:43:57,093 INFO L125 PetriNetUnfolderBase]: For 41510/41510 co-relation queries the response was YES. [2024-10-14 23:43:57,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37608 conditions, 11245 events. 5755/11245 cut-off events. For 41510/41510 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 78643 event pairs, 1554 based on Foata normal form. 161/11373 useless extension candidates. Maximal degree in co-relation 35448. Up to 5362 conditions per place. [2024-10-14 23:43:57,182 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 175 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-10-14 23:43:57,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2397 flow [2024-10-14 23:43:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:43:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:43:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-10-14 23:43:57,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-10-14 23:43:57,184 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 10 states and 259 transitions. [2024-10-14 23:43:57,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2397 flow [2024-10-14 23:43:57,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 227 transitions, 2357 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:57,274 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1729 flow [2024-10-14 23:43:57,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-10-14 23:43:57,274 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 105 predicate places. [2024-10-14 23:43:57,274 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1729 flow [2024-10-14 23:43:57,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 23:43:57,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:57,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:57,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 23:43:57,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:57,476 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:43:57,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1702964273, now seen corresponding path program 1 times [2024-10-14 23:43:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209783697] [2024-10-14 23:43:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:57,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:57,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209783697] [2024-10-14 23:43:57,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209783697] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:57,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842221530] [2024-10-14 23:43:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:57,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:57,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:57,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 23:43:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:57,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:43:57,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:57,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:43:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842221530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:43:57,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:43:57,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-14 23:43:57,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357525759] [2024-10-14 23:43:57,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:43:57,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 23:43:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 23:43:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-14 23:43:57,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-10-14 23:43:57,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1729 flow. Second operand has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 0 states have call successors, (0), 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 23:43:57,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:57,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-10-14 23:43:57,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:59,938 INFO L124 PetriNetUnfolderBase]: 7279/13539 cut-off events. [2024-10-14 23:43:59,938 INFO L125 PetriNetUnfolderBase]: For 45687/45687 co-relation queries the response was YES. [2024-10-14 23:44:00,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46003 conditions, 13539 events. 7279/13539 cut-off events. For 45687/45687 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 94098 event pairs, 1247 based on Foata normal form. 193/13675 useless extension candidates. Maximal degree in co-relation 44313. Up to 4548 conditions per place. [2024-10-14 23:44:00,103 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 222 selfloop transitions, 115 changer transitions 0/345 dead transitions. [2024-10-14 23:44:00,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 345 transitions, 3462 flow [2024-10-14 23:44:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 23:44:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 23:44:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 482 transitions. [2024-10-14 23:44:00,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2024-10-14 23:44:00,106 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1729 flow. Second operand 22 states and 482 transitions. [2024-10-14 23:44:00,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 345 transitions, 3462 flow [2024-10-14 23:44:00,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 345 transitions, 3401 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-10-14 23:44:00,220 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 2272 flow [2024-10-14 23:44:00,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2272, PETRI_PLACES=169, PETRI_TRANSITIONS=161} [2024-10-14 23:44:00,221 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-10-14 23:44:00,221 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 2272 flow [2024-10-14 23:44:00,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 0 states have call successors, (0), 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 23:44:00,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:00,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:00,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 23:44:00,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:00,423 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:00,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2040370022, now seen corresponding path program 1 times [2024-10-14 23:44:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007111537] [2024-10-14 23:44:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007111537] [2024-10-14 23:44:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007111537] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312843203] [2024-10-14 23:44:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:00,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:00,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:00,581 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:00,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 23:44:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:00,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:44:00,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:00,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:00,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312843203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:00,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-14 23:44:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439181033] [2024-10-14 23:44:00,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:00,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 23:44:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 23:44:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-14 23:44:00,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:44:00,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions, 2272 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 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 23:44:00,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:00,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:44:00,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:02,855 INFO L124 PetriNetUnfolderBase]: 6986/13680 cut-off events. [2024-10-14 23:44:02,855 INFO L125 PetriNetUnfolderBase]: For 65019/65019 co-relation queries the response was YES. [2024-10-14 23:44:02,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46889 conditions, 13680 events. 6986/13680 cut-off events. For 65019/65019 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 98622 event pairs, 1407 based on Foata normal form. 327/13966 useless extension candidates. Maximal degree in co-relation 44919. Up to 3569 conditions per place. [2024-10-14 23:44:03,045 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 199 selfloop transitions, 122 changer transitions 0/334 dead transitions. [2024-10-14 23:44:03,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 334 transitions, 3729 flow [2024-10-14 23:44:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 23:44:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 23:44:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 447 transitions. [2024-10-14 23:44:03,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-10-14 23:44:03,047 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 2272 flow. Second operand 18 states and 447 transitions. [2024-10-14 23:44:03,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 334 transitions, 3729 flow [2024-10-14 23:44:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3470 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-10-14 23:44:03,215 INFO L231 Difference]: Finished difference. Result has 168 places, 170 transitions, 2451 flow [2024-10-14 23:44:03,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2451, PETRI_PLACES=168, PETRI_TRANSITIONS=170} [2024-10-14 23:44:03,216 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-10-14 23:44:03,216 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 170 transitions, 2451 flow [2024-10-14 23:44:03,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 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 23:44:03,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:03,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:03,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 23:44:03,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:03,422 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -972866517, now seen corresponding path program 2 times [2024-10-14 23:44:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220888602] [2024-10-14 23:44:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220888602] [2024-10-14 23:44:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220888602] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048391729] [2024-10-14 23:44:03,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:44:03,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:03,569 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:03,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 23:44:03,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:44:03,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:44:03,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 23:44:03,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-14 23:44:03,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:44:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048391729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:44:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:44:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-14 23:44:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603437471] [2024-10-14 23:44:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:44:03,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:44:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:44:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:44:03,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-14 23:44:03,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 170 transitions, 2451 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 23:44:03,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:03,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-14 23:44:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:05,299 INFO L124 PetriNetUnfolderBase]: 5423/10852 cut-off events. [2024-10-14 23:44:05,299 INFO L125 PetriNetUnfolderBase]: For 49225/49225 co-relation queries the response was YES. [2024-10-14 23:44:05,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37352 conditions, 10852 events. 5423/10852 cut-off events. For 49225/49225 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 74389 event pairs, 2146 based on Foata normal form. 8/10827 useless extension candidates. Maximal degree in co-relation 37303. Up to 8751 conditions per place. [2024-10-14 23:44:05,420 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 136 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-10-14 23:44:05,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 2307 flow [2024-10-14 23:44:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:44:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:44:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-14 23:44:05,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-14 23:44:05,421 INFO L175 Difference]: Start difference. First operand has 168 places, 170 transitions, 2451 flow. Second operand 4 states and 119 transitions. [2024-10-14 23:44:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 2307 flow [2024-10-14 23:44:05,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1988 flow, removed 99 selfloop flow, removed 13 redundant places. [2024-10-14 23:44:05,551 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1665 flow [2024-10-14 23:44:05,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1665, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-10-14 23:44:05,552 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-10-14 23:44:05,552 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1665 flow [2024-10-14 23:44:05,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 23:44:05,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:05,552 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:05,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 23:44:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 23:44:05,756 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:05,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 153677078, now seen corresponding path program 1 times [2024-10-14 23:44:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300211785] [2024-10-14 23:44:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300211785] [2024-10-14 23:44:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300211785] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98507468] [2024-10-14 23:44:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:05,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:05,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 23:44:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:06,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 23:44:06,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:06,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98507468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:06,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-10-14 23:44:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039445040] [2024-10-14 23:44:06,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:44:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:44:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:44:06,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-14 23:44:06,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1665 flow. Second operand has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 0 states have call successors, (0), 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 23:44:06,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:06,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-14 23:44:06,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:08,473 INFO L124 PetriNetUnfolderBase]: 8979/17104 cut-off events. [2024-10-14 23:44:08,474 INFO L125 PetriNetUnfolderBase]: For 48060/48060 co-relation queries the response was YES. [2024-10-14 23:44:08,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55815 conditions, 17104 events. 8979/17104 cut-off events. For 48060/48060 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 116921 event pairs, 1165 based on Foata normal form. 162/17233 useless extension candidates. Maximal degree in co-relation 55768. Up to 3800 conditions per place. [2024-10-14 23:44:08,763 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 297 selfloop transitions, 155 changer transitions 0/461 dead transitions. [2024-10-14 23:44:08,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 461 transitions, 4578 flow [2024-10-14 23:44:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 23:44:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 23:44:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 623 transitions. [2024-10-14 23:44:08,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807098765432099 [2024-10-14 23:44:08,765 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1665 flow. Second operand 27 states and 623 transitions. [2024-10-14 23:44:08,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 461 transitions, 4578 flow [2024-10-14 23:44:08,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 461 transitions, 4566 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 23:44:08,931 INFO L231 Difference]: Finished difference. Result has 187 places, 225 transitions, 3165 flow [2024-10-14 23:44:08,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3165, PETRI_PLACES=187, PETRI_TRANSITIONS=225} [2024-10-14 23:44:08,932 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-10-14 23:44:08,932 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 225 transitions, 3165 flow [2024-10-14 23:44:08,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 0 states have call successors, (0), 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 23:44:08,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:08,933 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-14 23:44:08,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 23:44:09,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 23:44:09,133 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:09,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1656899403, now seen corresponding path program 2 times [2024-10-14 23:44:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777762086] [2024-10-14 23:44:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:09,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777762086] [2024-10-14 23:44:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777762086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442780745] [2024-10-14 23:44:09,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:44:09,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:09,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:09,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:09,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 23:44:09,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 23:44:09,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:44:09,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 23:44:09,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:09,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:44:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442780745] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:09,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-14 23:44:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362336381] [2024-10-14 23:44:09,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:09,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 23:44:09,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 23:44:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-14 23:44:09,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-14 23:44:09,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 225 transitions, 3165 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 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 23:44:09,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:09,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-14 23:44:09,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:12,789 INFO L124 PetriNetUnfolderBase]: 10936/21600 cut-off events. [2024-10-14 23:44:12,790 INFO L125 PetriNetUnfolderBase]: For 83079/83079 co-relation queries the response was YES. [2024-10-14 23:44:12,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74019 conditions, 21600 events. 10936/21600 cut-off events. For 83079/83079 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 155606 event pairs, 3598 based on Foata normal form. 144/21677 useless extension candidates. Maximal degree in co-relation 73967. Up to 11291 conditions per place. [2024-10-14 23:44:13,063 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 489 selfloop transitions, 54 changer transitions 0/561 dead transitions. [2024-10-14 23:44:13,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 561 transitions, 6039 flow [2024-10-14 23:44:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 23:44:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 23:44:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 696 transitions. [2024-10-14 23:44:13,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-10-14 23:44:13,065 INFO L175 Difference]: Start difference. First operand has 187 places, 225 transitions, 3165 flow. Second operand 22 states and 696 transitions. [2024-10-14 23:44:13,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 561 transitions, 6039 flow [2024-10-14 23:44:13,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 561 transitions, 5750 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-10-14 23:44:13,343 INFO L231 Difference]: Finished difference. Result has 204 places, 251 transitions, 3503 flow [2024-10-14 23:44:13,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3503, PETRI_PLACES=204, PETRI_TRANSITIONS=251} [2024-10-14 23:44:13,344 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 158 predicate places. [2024-10-14 23:44:13,344 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 251 transitions, 3503 flow [2024-10-14 23:44:13,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 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 23:44:13,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:13,344 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:13,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 23:44:13,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 23:44:13,545 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:13,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash -908551965, now seen corresponding path program 3 times [2024-10-14 23:44:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:13,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849066224] [2024-10-14 23:44:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 23:44:13,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849066224] [2024-10-14 23:44:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849066224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328442232] [2024-10-14 23:44:13,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 23:44:13,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:13,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:13,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:13,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 23:44:13,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 23:44:13,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:44:13,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 23:44:13,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:44:13,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:44:13,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328442232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:13,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:13,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-10-14 23:44:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002311956] [2024-10-14 23:44:13,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:13,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:44:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:44:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:44:13,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:44:13,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 251 transitions, 3503 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 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 23:44:13,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:13,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:44:13,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:18,794 INFO L124 PetriNetUnfolderBase]: 14867/29145 cut-off events. [2024-10-14 23:44:18,795 INFO L125 PetriNetUnfolderBase]: For 97854/97854 co-relation queries the response was YES. [2024-10-14 23:44:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97795 conditions, 29145 events. 14867/29145 cut-off events. For 97854/97854 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 219918 event pairs, 2614 based on Foata normal form. 228/29296 useless extension candidates. Maximal degree in co-relation 97739. Up to 5898 conditions per place. [2024-10-14 23:44:19,067 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 364 selfloop transitions, 235 changer transitions 0/613 dead transitions. [2024-10-14 23:44:19,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 613 transitions, 7199 flow [2024-10-14 23:44:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-14 23:44:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-14 23:44:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 659 transitions. [2024-10-14 23:44:19,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280448717948718 [2024-10-14 23:44:19,070 INFO L175 Difference]: Start difference. First operand has 204 places, 251 transitions, 3503 flow. Second operand 26 states and 659 transitions. [2024-10-14 23:44:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 613 transitions, 7199 flow [2024-10-14 23:44:19,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 613 transitions, 7095 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-10-14 23:44:19,427 INFO L231 Difference]: Finished difference. Result has 232 places, 354 transitions, 5745 flow [2024-10-14 23:44:19,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5745, PETRI_PLACES=232, PETRI_TRANSITIONS=354} [2024-10-14 23:44:19,428 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 186 predicate places. [2024-10-14 23:44:19,428 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 354 transitions, 5745 flow [2024-10-14 23:44:19,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 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 23:44:19,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:19,429 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:19,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 23:44:19,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-14 23:44:19,633 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:19,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1749234605, now seen corresponding path program 4 times [2024-10-14 23:44:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488266645] [2024-10-14 23:44:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:44:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488266645] [2024-10-14 23:44:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488266645] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936089945] [2024-10-14 23:44:20,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 23:44:20,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:20,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:20,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:20,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 23:44:20,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 23:44:20,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:44:20,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 23:44:20,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:44:20,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:44:20,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936089945] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:20,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:20,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-14 23:44:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530351747] [2024-10-14 23:44:20,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:20,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 23:44:20,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 23:44:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-10-14 23:44:20,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:44:20,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 354 transitions, 5745 flow. Second operand has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 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 23:44:20,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:20,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:44:20,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:44:28,654 INFO L124 PetriNetUnfolderBase]: 21355/41621 cut-off events. [2024-10-14 23:44:28,654 INFO L125 PetriNetUnfolderBase]: For 178634/178634 co-relation queries the response was YES. [2024-10-14 23:44:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145035 conditions, 41621 events. 21355/41621 cut-off events. For 178634/178634 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 331055 event pairs, 3635 based on Foata normal form. 296/41792 useless extension candidates. Maximal degree in co-relation 144970. Up to 6510 conditions per place. [2024-10-14 23:44:29,045 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 479 selfloop transitions, 418 changer transitions 0/911 dead transitions. [2024-10-14 23:44:29,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 911 transitions, 11970 flow [2024-10-14 23:44:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-14 23:44:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-14 23:44:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 947 transitions. [2024-10-14 23:44:29,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5332207207207207 [2024-10-14 23:44:29,047 INFO L175 Difference]: Start difference. First operand has 232 places, 354 transitions, 5745 flow. Second operand 37 states and 947 transitions. [2024-10-14 23:44:29,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 911 transitions, 11970 flow [2024-10-14 23:44:30,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 911 transitions, 11538 flow, removed 108 selfloop flow, removed 11 redundant places. [2024-10-14 23:44:30,207 INFO L231 Difference]: Finished difference. Result has 267 places, 529 transitions, 9524 flow [2024-10-14 23:44:30,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5347, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9524, PETRI_PLACES=267, PETRI_TRANSITIONS=529} [2024-10-14 23:44:30,208 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 221 predicate places. [2024-10-14 23:44:30,208 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 529 transitions, 9524 flow [2024-10-14 23:44:30,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 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 23:44:30,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:44:30,208 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:44:30,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 23:44:30,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:30,413 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-14 23:44:30,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:44:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -460234144, now seen corresponding path program 1 times [2024-10-14 23:44:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:44:30,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503535686] [2024-10-14 23:44:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:30,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:44:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 23:44:30,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:44:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503535686] [2024-10-14 23:44:30,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503535686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:44:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959150724] [2024-10-14 23:44:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:44:30,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:44:30,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:44:30,722 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:44:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 23:44:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:44:30,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 23:44:30,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:44:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 23:44:30,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:44:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 23:44:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959150724] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:44:31,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:44:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-14 23:44:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467625825] [2024-10-14 23:44:31,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:44:31,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 23:44:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:44:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 23:44:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-10-14 23:44:31,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 23:44:31,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 529 transitions, 9524 flow. Second operand has 26 states, 26 states have (on average 18.46153846153846) internal successors, (480), 26 states have internal predecessors, (480), 0 states have call successors, (0), 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 23:44:31,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:44:31,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 23:44:31,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand