./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../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-?-c7c6ca5-m [2024-11-09 14:53:29,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 14:53:29,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 14:53:29,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 14:53:29,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 14:53:29,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 14:53:29,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 14:53:29,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 14:53:29,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 14:53:29,378 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 14:53:29,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 14:53:29,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 14:53:29,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 14:53:29,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 14:53:29,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 14:53:29,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 14:53:29,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 14:53:29,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 14:53:29,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 14:53:29,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 14:53:29,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 14:53:29,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 14:53:29,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 14:53:29,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 14:53:29,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 14:53:29,384 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 14:53:29,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 14:53:29,385 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 14:53:29,385 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 14:53:29,385 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 14:53:29,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 14:53:29,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 14:53:29,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 14:53:29,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 14:53:29,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:53:29,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 14:53:29,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 14:53:29,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 14:53:29,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 14:53:29,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 14:53:29,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 14:53:29,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 14:53:29,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 14:53:29,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 14:53:29,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-11-09 14:53:29,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 14:53:29,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 14:53:29,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 14:53:29,677 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 14:53:29,677 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 14:53:29,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-09 14:53:31,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 14:53:31,409 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 14:53:31,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-09 14:53:31,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15357f5ae/6ebd9703f4d644dc9d38f6ec55a8639a/FLAGd0f794aa6 [2024-11-09 14:53:31,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15357f5ae/6ebd9703f4d644dc9d38f6ec55a8639a [2024-11-09 14:53:31,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 14:53:31,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 14:53:31,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 14:53:31,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 14:53:31,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 14:53:31,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:53:31" (1/1) ... [2024-11-09 14:53:31,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f74ff39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:31, skipping insertion in model container [2024-11-09 14:53:31,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:53:31" (1/1) ... [2024-11-09 14:53:31,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 14:53:32,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:53:32,038 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 14:53:32,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:53:32,181 INFO L204 MainTranslator]: Completed translation [2024-11-09 14:53:32,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32 WrapperNode [2024-11-09 14:53:32,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 14:53:32,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 14:53:32,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 14:53:32,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 14:53:32,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,279 INFO L138 Inliner]: procedures = 277, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 564 [2024-11-09 14:53:32,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 14:53:32,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 14:53:32,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 14:53:32,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 14:53:32,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,326 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-09 14:53:32,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 14:53:32,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 14:53:32,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 14:53:32,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 14:53:32,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (1/1) ... [2024-11-09 14:53:32,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:53:32,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:32,417 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) [2024-11-09 14:53:32,424 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 [2024-11-09 14:53:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 14:53:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 14:53:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 14:53:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 14:53:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 14:53:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 14:53:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 14:53:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 14:53:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 14:53:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 14:53:32,484 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 14:53:32,663 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 14:53:32,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 14:53:33,537 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 14:53:33,538 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 14:53:38,621 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 14:53:38,622 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 14:53:38,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:38 BoogieIcfgContainer [2024-11-09 14:53:38,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 14:53:38,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 14:53:38,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 14:53:38,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 14:53:38,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:53:31" (1/3) ... [2024-11-09 14:53:38,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692acd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:38, skipping insertion in model container [2024-11-09 14:53:38,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:32" (2/3) ... [2024-11-09 14:53:38,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692acd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:38, skipping insertion in model container [2024-11-09 14:53:38,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:38" (3/3) ... [2024-11-09 14:53:38,633 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-11-09 14:53:38,653 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 14:53:38,653 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 14:53:38,653 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 14:53:38,722 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 14:53:38,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 14:53:38,822 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-09 14:53:38,823 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 14:53:38,828 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. [2024-11-09 14:53:38,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 14:53:38,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-09 14:53:38,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 14:53:38,876 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;@3626919a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 14:53:38,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 14:53:38,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 14:53:38,910 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-09 14:53:38,910 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 14:53:38,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:38,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:38,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:38,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1346292632, now seen corresponding path program 1 times [2024-11-09 14:53:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:38,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246130143] [2024-11-09 14:53:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246130143] [2024-11-09 14:53:39,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246130143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:39,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:39,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758270374] [2024-11-09 14:53:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:39,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:39,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:39,633 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) [2024-11-09 14:53:39,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:39,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:39,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:40,152 INFO L124 PetriNetUnfolderBase]: 708/1406 cut-off events. [2024-11-09 14:53:40,152 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-09 14:53:40,157 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. [2024-11-09 14:53:40,167 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-09 14:53:40,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-11-09 14:53:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-09 14:53:40,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-09 14:53:40,185 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-11-09 14:53:40,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-11-09 14:53:40,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:40,197 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-11-09 14:53:40,200 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} [2024-11-09 14:53:40,204 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-09 14:53:40,206 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-11-09 14:53:40,207 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) [2024-11-09 14:53:40,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:40,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:40,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 14:53:40,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:40,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash 488413087, now seen corresponding path program 1 times [2024-11-09 14:53:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579794746] [2024-11-09 14:53:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:40,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579794746] [2024-11-09 14:53:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579794746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107081001] [2024-11-09 14:53:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:40,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:40,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:40,431 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) [2024-11-09 14:53:40,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:40,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:40,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:40,706 INFO L124 PetriNetUnfolderBase]: 746/1508 cut-off events. [2024-11-09 14:53:40,706 INFO L125 PetriNetUnfolderBase]: For 346/350 co-relation queries the response was YES. [2024-11-09 14:53:40,710 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. [2024-11-09 14:53:40,717 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-09 14:53:40,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-11-09 14:53:40,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-09 14:53:40,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-09 14:53:40,719 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-11-09 14:53:40,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-11-09 14:53:40,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 14:53:40,726 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-11-09 14:53:40,726 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} [2024-11-09 14:53:40,727 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-09 14:53:40,727 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-11-09 14:53:40,728 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) [2024-11-09 14:53:40,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:40,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:40,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 14:53:40,729 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:40,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2039092999, now seen corresponding path program 1 times [2024-11-09 14:53:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966298643] [2024-11-09 14:53:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:40,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:40,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966298643] [2024-11-09 14:53:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966298643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:40,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:40,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831572444] [2024-11-09 14:53:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:40,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:40,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:40,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:40,977 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) [2024-11-09 14:53:40,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:40,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:40,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:41,297 INFO L124 PetriNetUnfolderBase]: 1250/2479 cut-off events. [2024-11-09 14:53:41,298 INFO L125 PetriNetUnfolderBase]: For 1160/1168 co-relation queries the response was YES. [2024-11-09 14:53:41,305 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. [2024-11-09 14:53:41,318 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-09 14:53:41,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-11-09 14:53:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-09 14:53:41,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-09 14:53:41,322 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-11-09 14:53:41,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-11-09 14:53:41,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:41,338 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-11-09 14:53:41,338 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} [2024-11-09 14:53:41,339 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-09 14:53:41,339 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-11-09 14:53:41,340 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) [2024-11-09 14:53:41,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:41,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:41,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 14:53:41,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:41,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash -628901138, now seen corresponding path program 1 times [2024-11-09 14:53:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067815482] [2024-11-09 14:53:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:41,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:41,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067815482] [2024-11-09 14:53:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067815482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636763498] [2024-11-09 14:53:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:41,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:41,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:41,616 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) [2024-11-09 14:53:41,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:41,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:41,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:42,014 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2024-11-09 14:53:42,014 INFO L125 PetriNetUnfolderBase]: For 2145/2317 co-relation queries the response was YES. [2024-11-09 14:53:42,025 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. [2024-11-09 14:53:42,043 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-09 14:53:42,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-11-09 14:53:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-09 14:53:42,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-09 14:53:42,048 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-11-09 14:53:42,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-11-09 14:53:42,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:42,057 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-11-09 14:53:42,057 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} [2024-11-09 14:53:42,058 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-11-09 14:53:42,059 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-11-09 14:53:42,059 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) [2024-11-09 14:53:42,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:42,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:42,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 14:53:42,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:42,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1258820133, now seen corresponding path program 1 times [2024-11-09 14:53:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101237604] [2024-11-09 14:53:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:42,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:42,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101237604] [2024-11-09 14:53:42,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101237604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:42,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:42,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698230965] [2024-11-09 14:53:42,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:42,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:42,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 14:53:42,299 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) [2024-11-09 14:53:42,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:42,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 14:53:42,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:42,510 INFO L124 PetriNetUnfolderBase]: 823/1824 cut-off events. [2024-11-09 14:53:42,510 INFO L125 PetriNetUnfolderBase]: For 1152/1228 co-relation queries the response was YES. [2024-11-09 14:53:42,516 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. [2024-11-09 14:53:42,527 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-09 14:53:42,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-11-09 14:53:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-09 14:53:42,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 14:53:42,528 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-11-09 14:53:42,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-11-09 14:53:42,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:42,540 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-11-09 14:53:42,541 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} [2024-11-09 14:53:42,542 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-09 14:53:42,542 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-11-09 14:53:42,542 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) [2024-11-09 14:53:42,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:42,543 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:42,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 14:53:42,543 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:42,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -65955006, now seen corresponding path program 1 times [2024-11-09 14:53:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329958223] [2024-11-09 14:53:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:42,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:42,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329958223] [2024-11-09 14:53:42,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329958223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517141572] [2024-11-09 14:53:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:42,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:42,766 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) [2024-11-09 14:53:42,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 14:53:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:42,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:43,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:43,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517141572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:43,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:43,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 14:53:43,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397374676] [2024-11-09 14:53:43,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:43,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:43,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:53:43,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:43,098 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) [2024-11-09 14:53:43,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:43,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:43,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:43,602 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2024-11-09 14:53:43,602 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2024-11-09 14:53:43,613 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. [2024-11-09 14:53:43,629 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-09 14:53:43,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-11-09 14:53:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-09 14:53:43,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 14:53:43,631 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-11-09 14:53:43,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-11-09 14:53:43,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:43,639 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-11-09 14:53:43,639 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} [2024-11-09 14:53:43,640 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-09 14:53:43,640 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-11-09 14:53:43,641 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) [2024-11-09 14:53:43,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:43,641 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] [2024-11-09 14:53:43,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 14:53:43,841 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 [2024-11-09 14:53:43,842 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:43,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -947246490, now seen corresponding path program 1 times [2024-11-09 14:53:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:43,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074838104] [2024-11-09 14:53:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074838104] [2024-11-09 14:53:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074838104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:44,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:44,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879873793] [2024-11-09 14:53:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:44,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:44,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:53:44,134 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) [2024-11-09 14:53:44,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:44,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:53:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:44,788 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2024-11-09 14:53:44,788 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2024-11-09 14:53:44,802 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. [2024-11-09 14:53:44,828 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-11-09 14:53:44,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-11-09 14:53:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-11-09 14:53:44,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-09 14:53:44,831 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-11-09 14:53:44,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-11-09 14:53:44,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:44,841 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-11-09 14:53:44,841 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} [2024-11-09 14:53:44,842 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-09 14:53:44,842 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-11-09 14:53:44,842 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) [2024-11-09 14:53:44,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:44,843 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] [2024-11-09 14:53:44,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 14:53:44,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:44,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:44,843 INFO L85 PathProgramCache]: Analyzing trace with hash 304233348, now seen corresponding path program 1 times [2024-11-09 14:53:44,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:44,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661294581] [2024-11-09 14:53:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661294581] [2024-11-09 14:53:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661294581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:45,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487045981] [2024-11-09 14:53:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:45,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:45,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:53:45,074 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) [2024-11-09 14:53:45,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:45,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:53:45,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:45,663 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2024-11-09 14:53:45,664 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2024-11-09 14:53:45,683 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. [2024-11-09 14:53:45,707 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-11-09 14:53:45,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-11-09 14:53:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 14:53:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 14:53:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-11-09 14:53:45,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-09 14:53:45,710 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-11-09 14:53:45,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-11-09 14:53:45,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:45,726 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-11-09 14:53:45,726 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} [2024-11-09 14:53:45,727 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-09 14:53:45,727 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-11-09 14:53:45,729 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) [2024-11-09 14:53:45,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:45,729 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:45,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 14:53:45,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:45,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2020732047, now seen corresponding path program 1 times [2024-11-09 14:53:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416670427] [2024-11-09 14:53:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:45,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416670427] [2024-11-09 14:53:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416670427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997664637] [2024-11-09 14:53:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:45,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:45,896 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) [2024-11-09 14:53:45,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 14:53:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:46,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:53:46,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:46,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997664637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:46,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:53:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546930933] [2024-11-09 14:53:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:46,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:53:46,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:46,144 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) [2024-11-09 14:53:46,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:46,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:46,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:46,863 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-11-09 14:53:46,864 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-11-09 14:53:46,885 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. [2024-11-09 14:53:46,907 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-09 14:53:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-11-09 14:53:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-09 14:53:46,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-09 14:53:46,909 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-11-09 14:53:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-11-09 14:53:46,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-09 14:53:46,931 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-11-09 14:53:46,932 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} [2024-11-09 14:53:46,933 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-09 14:53:46,933 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-11-09 14:53:46,934 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) [2024-11-09 14:53:46,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:46,935 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:46,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 14:53:47,135 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 [2024-11-09 14:53:47,136 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:47,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2044603905, now seen corresponding path program 1 times [2024-11-09 14:53:47,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:47,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764364506] [2024-11-09 14:53:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764364506] [2024-11-09 14:53:47,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764364506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192038502] [2024-11-09 14:53:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:47,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:47,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:47,351 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) [2024-11-09 14:53:47,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 14:53:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:47,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:47,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:47,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:47,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192038502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:47,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:47,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 14:53:47,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365185858] [2024-11-09 14:53:47,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:47,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 14:53:47,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 14:53:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 14:53:47,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:47,727 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) [2024-11-09 14:53:47,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:47,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:47,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:48,915 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-11-09 14:53:48,915 INFO L125 PetriNetUnfolderBase]: For 12128/12358 co-relation queries the response was YES. [2024-11-09 14:53:48,964 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. [2024-11-09 14:53:49,007 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-11-09 14:53:49,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-11-09 14:53:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 14:53:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 14:53:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-11-09 14:53:49,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-11-09 14:53:49,011 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-11-09 14:53:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-11-09 14:53:49,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:49,049 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-11-09 14:53:49,051 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} [2024-11-09 14:53:49,052 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-11-09 14:53:49,053 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-11-09 14:53:49,054 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) [2024-11-09 14:53:49,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:49,054 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] [2024-11-09 14:53:49,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 14:53:49,258 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 [2024-11-09 14:53:49,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:49,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash 700131186, now seen corresponding path program 1 times [2024-11-09 14:53:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82214107] [2024-11-09 14:53:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:49,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:49,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82214107] [2024-11-09 14:53:49,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82214107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:49,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:49,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230015469] [2024-11-09 14:53:49,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:49,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:49,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:53:49,509 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) [2024-11-09 14:53:49,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:49,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:53:49,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:50,436 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2024-11-09 14:53:50,437 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2024-11-09 14:53:50,472 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. [2024-11-09 14:53:50,502 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-11-09 14:53:50,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-11-09 14:53:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 14:53:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 14:53:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-11-09 14:53:50,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-11-09 14:53:50,504 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-11-09 14:53:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-11-09 14:53:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:50,547 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-11-09 14:53:50,548 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} [2024-11-09 14:53:50,548 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-09 14:53:50,548 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-11-09 14:53:50,549 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) [2024-11-09 14:53:50,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:50,550 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] [2024-11-09 14:53:50,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 14:53:50,550 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:50,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 841300477, now seen corresponding path program 1 times [2024-11-09 14:53:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:50,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783269051] [2024-11-09 14:53:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783269051] [2024-11-09 14:53:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783269051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694991652] [2024-11-09 14:53:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:50,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:50,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:53:50,744 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) [2024-11-09 14:53:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:53:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:51,520 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2024-11-09 14:53:51,521 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2024-11-09 14:53:51,558 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. [2024-11-09 14:53:51,588 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2024-11-09 14:53:51,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2024-11-09 14:53:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-09 14:53:51,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-09 14:53:51,589 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2024-11-09 14:53:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2024-11-09 14:53:51,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:51,635 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2024-11-09 14:53:51,635 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} [2024-11-09 14:53:51,636 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-09 14:53:51,636 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2024-11-09 14:53:51,636 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) [2024-11-09 14:53:51,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:51,637 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:51,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 14:53:51,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:51,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1781814677, now seen corresponding path program 1 times [2024-11-09 14:53:51,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:51,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470515044] [2024-11-09 14:53:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:53:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470515044] [2024-11-09 14:53:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470515044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:51,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:51,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272746133] [2024-11-09 14:53:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:51,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:51,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:51,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:51,737 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) [2024-11-09 14:53:51,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:51,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:51,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:52,432 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2024-11-09 14:53:52,432 INFO L125 PetriNetUnfolderBase]: For 16088/16336 co-relation queries the response was YES. [2024-11-09 14:53:52,462 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. [2024-11-09 14:53:52,482 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2024-11-09 14:53:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2024-11-09 14:53:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-09 14:53:52,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-09 14:53:52,484 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2024-11-09 14:53:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2024-11-09 14:53:52,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:52,530 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2024-11-09 14:53:52,530 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} [2024-11-09 14:53:52,531 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-09 14:53:52,531 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2024-11-09 14:53:52,531 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) [2024-11-09 14:53:52,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:52,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:52,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 14:53:52,532 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:52,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 344500842, now seen corresponding path program 1 times [2024-11-09 14:53:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321227780] [2024-11-09 14:53:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:52,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:52,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321227780] [2024-11-09 14:53:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321227780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:52,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096979322] [2024-11-09 14:53:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:52,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:52,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:52,708 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) [2024-11-09 14:53:52,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 14:53:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:52,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:52,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:52,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096979322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:53,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:53,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 14:53:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615967764] [2024-11-09 14:53:53,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:53,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 14:53:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 14:53:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 14:53:53,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:53,028 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) [2024-11-09 14:53:53,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:53,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:53,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:54,421 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2024-11-09 14:53:54,421 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2024-11-09 14:53:54,469 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. [2024-11-09 14:53:54,492 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-11-09 14:53:54,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2024-11-09 14:53:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 14:53:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 14:53:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2024-11-09 14:53:54,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-09 14:53:54,494 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2024-11-09 14:53:54,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2024-11-09 14:53:54,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:54,703 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2024-11-09 14:53:54,703 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} [2024-11-09 14:53:54,704 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2024-11-09 14:53:54,704 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2024-11-09 14:53:54,705 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) [2024-11-09 14:53:54,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:54,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:54,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 14:53:54,909 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 [2024-11-09 14:53:54,910 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:54,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash 523380100, now seen corresponding path program 1 times [2024-11-09 14:53:54,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:54,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699115566] [2024-11-09 14:53:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:54,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699115566] [2024-11-09 14:53:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699115566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399520227] [2024-11-09 14:53:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:55,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:55,133 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) [2024-11-09 14:53:55,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 14:53:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:55,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:53:55,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:55,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399520227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:55,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:55,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:53:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855047208] [2024-11-09 14:53:55,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:55,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:53:55,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:55,414 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) [2024-11-09 14:53:55,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:55,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:56,500 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2024-11-09 14:53:56,501 INFO L125 PetriNetUnfolderBase]: For 24971/25025 co-relation queries the response was YES. [2024-11-09 14:53:56,534 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. [2024-11-09 14:53:56,558 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-11-09 14:53:56,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2024-11-09 14:53:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-09 14:53:56,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-09 14:53:56,559 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2024-11-09 14:53:56,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2024-11-09 14:53:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-11-09 14:53:56,616 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2024-11-09 14:53:56,616 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} [2024-11-09 14:53:56,617 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-09 14:53:56,617 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2024-11-09 14:53:56,617 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) [2024-11-09 14:53:56,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:56,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 14:53:56,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 14:53:56,821 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 [2024-11-09 14:53:56,821 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:56,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash -955084798, now seen corresponding path program 1 times [2024-11-09 14:53:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493295911] [2024-11-09 14:53:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:53:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493295911] [2024-11-09 14:53:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493295911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500911994] [2024-11-09 14:53:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:56,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:56,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:56,981 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) [2024-11-09 14:53:56,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:56,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:56,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:57,928 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2024-11-09 14:53:57,928 INFO L125 PetriNetUnfolderBase]: For 23394/23398 co-relation queries the response was YES. [2024-11-09 14:53:57,965 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. [2024-11-09 14:53:57,989 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-11-09 14:53:57,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2024-11-09 14:53:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-09 14:53:57,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-09 14:53:57,990 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2024-11-09 14:53:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2024-11-09 14:53:58,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:58,046 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2024-11-09 14:53:58,047 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} [2024-11-09 14:53:58,047 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-09 14:53:58,047 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2024-11-09 14:53:58,047 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) [2024-11-09 14:53:58,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:58,047 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] [2024-11-09 14:53:58,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 14:53:58,048 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:58,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -94793428, now seen corresponding path program 1 times [2024-11-09 14:53:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160708095] [2024-11-09 14:53:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:58,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:58,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160708095] [2024-11-09 14:53:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160708095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095145581] [2024-11-09 14:53:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:58,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:58,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:58,372 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) [2024-11-09 14:53:58,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 14:53:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:58,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 14:53:58,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 14:53:58,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095145581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:58,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-09 14:53:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556418750] [2024-11-09 14:53:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:58,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:53:58,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:53:58,669 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) [2024-11-09 14:53:58,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:58,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:53:58,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:59,712 INFO L124 PetriNetUnfolderBase]: 4880/9556 cut-off events. [2024-11-09 14:53:59,713 INFO L125 PetriNetUnfolderBase]: For 27557/27557 co-relation queries the response was YES. [2024-11-09 14:53:59,761 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. [2024-11-09 14:53:59,789 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-11-09 14:53:59,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2024-11-09 14:53:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 14:53:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 14:53:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-09 14:53:59,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-11-09 14:53:59,791 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2024-11-09 14:53:59,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2024-11-09 14:53:59,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:59,980 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2024-11-09 14:53:59,981 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} [2024-11-09 14:53:59,981 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-09 14:53:59,982 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2024-11-09 14:53:59,982 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) [2024-11-09 14:53:59,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:59,982 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] [2024-11-09 14:53:59,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 14:54:00,183 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 [2024-11-09 14:54:00,184 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:00,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2023202739, now seen corresponding path program 1 times [2024-11-09 14:54:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621038886] [2024-11-09 14:54:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:00,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621038886] [2024-11-09 14:54:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621038886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983659797] [2024-11-09 14:54:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:00,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:00,458 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) [2024-11-09 14:54:00,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 14:54:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:00,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 14:54:00,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 14:54:00,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:54:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983659797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:54:00,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:54:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-09 14:54:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611568413] [2024-11-09 14:54:00,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:54:00,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:54:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:54:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:54:00,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:54:00,733 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) [2024-11-09 14:54:00,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:00,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:54:00,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:02,220 INFO L124 PetriNetUnfolderBase]: 5755/11245 cut-off events. [2024-11-09 14:54:02,220 INFO L125 PetriNetUnfolderBase]: For 41510/41510 co-relation queries the response was YES. [2024-11-09 14:54:02,267 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. [2024-11-09 14:54:02,296 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 175 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-11-09 14:54:02,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2397 flow [2024-11-09 14:54:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 14:54:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 14:54:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-09 14:54:02,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-11-09 14:54:02,298 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 10 states and 259 transitions. [2024-11-09 14:54:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2397 flow [2024-11-09 14:54:02,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 227 transitions, 2357 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-09 14:54:02,393 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1729 flow [2024-11-09 14:54:02,393 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} [2024-11-09 14:54:02,393 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 105 predicate places. [2024-11-09 14:54:02,394 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1729 flow [2024-11-09 14:54:02,394 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) [2024-11-09 14:54:02,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:02,394 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] [2024-11-09 14:54:02,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 14:54:02,594 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 [2024-11-09 14:54:02,595 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:02,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -518221873, now seen corresponding path program 1 times [2024-11-09 14:54:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836874192] [2024-11-09 14:54:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:02,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836874192] [2024-11-09 14:54:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836874192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655778575] [2024-11-09 14:54:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:02,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:02,810 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) [2024-11-09 14:54:02,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 14:54:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:03,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 14:54:03,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:03,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655778575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:03,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:03,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 14:54:03,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178611075] [2024-11-09 14:54:03,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:03,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 14:54:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:03,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 14:54:03,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-09 14:54:03,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-09 14:54:03,338 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) [2024-11-09 14:54:03,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:03,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-09 14:54:03,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:05,502 INFO L124 PetriNetUnfolderBase]: 7279/13539 cut-off events. [2024-11-09 14:54:05,502 INFO L125 PetriNetUnfolderBase]: For 45687/45687 co-relation queries the response was YES. [2024-11-09 14:54:05,588 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. [2024-11-09 14:54:05,626 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 222 selfloop transitions, 115 changer transitions 0/345 dead transitions. [2024-11-09 14:54:05,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 345 transitions, 3462 flow [2024-11-09 14:54:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 14:54:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 14:54:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 482 transitions. [2024-11-09 14:54:05,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2024-11-09 14:54:05,628 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1729 flow. Second operand 22 states and 482 transitions. [2024-11-09 14:54:05,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 345 transitions, 3462 flow [2024-11-09 14:54:05,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 345 transitions, 3401 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-09 14:54:05,729 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 2272 flow [2024-11-09 14:54:05,729 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} [2024-11-09 14:54:05,730 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-11-09 14:54:05,730 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 2272 flow [2024-11-09 14:54:05,730 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) [2024-11-09 14:54:05,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:05,730 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] [2024-11-09 14:54:05,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 14:54:05,930 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 [2024-11-09 14:54:05,931 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:05,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1069854874, now seen corresponding path program 1 times [2024-11-09 14:54:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:05,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240065486] [2024-11-09 14:54:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:06,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240065486] [2024-11-09 14:54:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240065486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829169134] [2024-11-09 14:54:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:06,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:06,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:06,123 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) [2024-11-09 14:54:06,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 14:54:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:06,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 14:54:06,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:06,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:06,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829169134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:06,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:06,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 14:54:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155769450] [2024-11-09 14:54:06,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:06,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 14:54:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 14:54:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-09 14:54:06,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:54:06,605 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) [2024-11-09 14:54:06,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:06,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:54:06,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:08,686 INFO L124 PetriNetUnfolderBase]: 6986/13680 cut-off events. [2024-11-09 14:54:08,686 INFO L125 PetriNetUnfolderBase]: For 65019/65019 co-relation queries the response was YES. [2024-11-09 14:54:08,762 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. [2024-11-09 14:54:08,808 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 199 selfloop transitions, 122 changer transitions 0/334 dead transitions. [2024-11-09 14:54:08,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 334 transitions, 3729 flow [2024-11-09 14:54:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 14:54:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 14:54:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 447 transitions. [2024-11-09 14:54:08,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-11-09 14:54:08,810 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 2272 flow. Second operand 18 states and 447 transitions. [2024-11-09 14:54:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 334 transitions, 3729 flow [2024-11-09 14:54:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3470 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-11-09 14:54:08,972 INFO L231 Difference]: Finished difference. Result has 168 places, 170 transitions, 2451 flow [2024-11-09 14:54:08,972 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} [2024-11-09 14:54:08,972 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-11-09 14:54:08,973 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 170 transitions, 2451 flow [2024-11-09 14:54:08,973 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) [2024-11-09 14:54:08,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:08,973 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] [2024-11-09 14:54:08,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 14:54:09,173 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 [2024-11-09 14:54:09,174 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:09,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1600927607, now seen corresponding path program 2 times [2024-11-09 14:54:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:09,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81861035] [2024-11-09 14:54:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81861035] [2024-11-09 14:54:09,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81861035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:09,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435875330] [2024-11-09 14:54:09,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 14:54:09,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:09,493 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) [2024-11-09 14:54:09,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 14:54:09,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 14:54:09,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:09,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 14:54:09,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 14:54:09,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:54:09,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435875330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:54:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:54:09,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-09 14:54:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232885702] [2024-11-09 14:54:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:54:09,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:54:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:54:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 14:54:09,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 14:54:09,724 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) [2024-11-09 14:54:09,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:09,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 14:54:09,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:11,121 INFO L124 PetriNetUnfolderBase]: 5423/10852 cut-off events. [2024-11-09 14:54:11,121 INFO L125 PetriNetUnfolderBase]: For 49225/49225 co-relation queries the response was YES. [2024-11-09 14:54:11,176 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. [2024-11-09 14:54:11,205 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 136 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-11-09 14:54:11,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 2307 flow [2024-11-09 14:54:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:54:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:54:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-09 14:54:11,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-09 14:54:11,207 INFO L175 Difference]: Start difference. First operand has 168 places, 170 transitions, 2451 flow. Second operand 4 states and 119 transitions. [2024-11-09 14:54:11,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 2307 flow [2024-11-09 14:54:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1988 flow, removed 99 selfloop flow, removed 13 redundant places. [2024-11-09 14:54:11,308 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1665 flow [2024-11-09 14:54:11,308 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} [2024-11-09 14:54:11,308 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-11-09 14:54:11,308 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1665 flow [2024-11-09 14:54:11,309 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) [2024-11-09 14:54:11,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:11,309 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] [2024-11-09 14:54:11,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 14:54:11,509 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 [2024-11-09 14:54:11,509 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:11,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2136346730, now seen corresponding path program 1 times [2024-11-09 14:54:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51447621] [2024-11-09 14:54:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:12,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:12,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51447621] [2024-11-09 14:54:12,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51447621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:12,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217423069] [2024-11-09 14:54:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:12,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:12,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:12,005 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) [2024-11-09 14:54:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 14:54:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:12,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 14:54:12,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:12,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217423069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:12,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-09 14:54:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593654454] [2024-11-09 14:54:12,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:12,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 14:54:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 14:54:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 14:54:12,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:54:12,368 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) [2024-11-09 14:54:12,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:12,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:54:12,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:15,101 INFO L124 PetriNetUnfolderBase]: 8979/17104 cut-off events. [2024-11-09 14:54:15,101 INFO L125 PetriNetUnfolderBase]: For 48060/48060 co-relation queries the response was YES. [2024-11-09 14:54:15,209 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. [2024-11-09 14:54:15,254 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 297 selfloop transitions, 155 changer transitions 0/461 dead transitions. [2024-11-09 14:54:15,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 461 transitions, 4578 flow [2024-11-09 14:54:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 14:54:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 14:54:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 623 transitions. [2024-11-09 14:54:15,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807098765432099 [2024-11-09 14:54:15,256 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1665 flow. Second operand 27 states and 623 transitions. [2024-11-09 14:54:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 461 transitions, 4578 flow [2024-11-09 14:54:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 461 transitions, 4566 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 14:54:15,421 INFO L231 Difference]: Finished difference. Result has 187 places, 225 transitions, 3165 flow [2024-11-09 14:54:15,421 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} [2024-11-09 14:54:15,421 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-11-09 14:54:15,421 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 225 transitions, 3165 flow [2024-11-09 14:54:15,422 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) [2024-11-09 14:54:15,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:15,422 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-09 14:54:15,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 14:54:15,628 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 [2024-11-09 14:54:15,628 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:15,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -435943191, now seen corresponding path program 2 times [2024-11-09 14:54:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118469282] [2024-11-09 14:54:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:15,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118469282] [2024-11-09 14:54:15,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118469282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327728610] [2024-11-09 14:54:15,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 14:54:15,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:15,924 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) [2024-11-09 14:54:15,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 14:54:16,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 14:54:16,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:16,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 14:54:16,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:16,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:54:16,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327728610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:16,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:16,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-09 14:54:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982157846] [2024-11-09 14:54:16,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:16,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 14:54:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 14:54:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-09 14:54:16,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:54:16,606 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) [2024-11-09 14:54:16,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:16,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:54:16,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:20,492 INFO L124 PetriNetUnfolderBase]: 10936/21600 cut-off events. [2024-11-09 14:54:20,492 INFO L125 PetriNetUnfolderBase]: For 83079/83079 co-relation queries the response was YES. [2024-11-09 14:54:20,612 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. [2024-11-09 14:54:20,670 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 489 selfloop transitions, 54 changer transitions 0/561 dead transitions. [2024-11-09 14:54:20,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 561 transitions, 6039 flow [2024-11-09 14:54:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 14:54:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 14:54:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 696 transitions. [2024-11-09 14:54:20,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-09 14:54:20,672 INFO L175 Difference]: Start difference. First operand has 187 places, 225 transitions, 3165 flow. Second operand 22 states and 696 transitions. [2024-11-09 14:54:20,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 561 transitions, 6039 flow [2024-11-09 14:54:20,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 561 transitions, 5750 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-09 14:54:20,939 INFO L231 Difference]: Finished difference. Result has 204 places, 251 transitions, 3503 flow [2024-11-09 14:54:20,939 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} [2024-11-09 14:54:20,940 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 158 predicate places. [2024-11-09 14:54:20,940 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 251 transitions, 3503 flow [2024-11-09 14:54:20,940 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) [2024-11-09 14:54:20,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:20,940 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] [2024-11-09 14:54:20,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 14:54:21,140 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 [2024-11-09 14:54:21,141 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:21,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1362162141, now seen corresponding path program 3 times [2024-11-09 14:54:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65527557] [2024-11-09 14:54:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 14:54:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65527557] [2024-11-09 14:54:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65527557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387358377] [2024-11-09 14:54:21,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 14:54:21,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:21,435 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) [2024-11-09 14:54:21,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 14:54:21,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 14:54:21,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:21,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 14:54:21,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:21,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387358377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:21,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-09 14:54:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546987251] [2024-11-09 14:54:21,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:21,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 14:54:21,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 14:54:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-09 14:54:21,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:54:21,854 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) [2024-11-09 14:54:21,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:54:21,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:27,093 INFO L124 PetriNetUnfolderBase]: 14867/29145 cut-off events. [2024-11-09 14:54:27,094 INFO L125 PetriNetUnfolderBase]: For 97854/97854 co-relation queries the response was YES. [2024-11-09 14:54:27,410 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. [2024-11-09 14:54:27,495 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 364 selfloop transitions, 235 changer transitions 0/613 dead transitions. [2024-11-09 14:54:27,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 613 transitions, 7199 flow [2024-11-09 14:54:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 14:54:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 14:54:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 659 transitions. [2024-11-09 14:54:27,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280448717948718 [2024-11-09 14:54:27,498 INFO L175 Difference]: Start difference. First operand has 204 places, 251 transitions, 3503 flow. Second operand 26 states and 659 transitions. [2024-11-09 14:54:27,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 613 transitions, 7199 flow [2024-11-09 14:54:28,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 613 transitions, 7095 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-09 14:54:28,229 INFO L231 Difference]: Finished difference. Result has 232 places, 354 transitions, 5745 flow [2024-11-09 14:54:28,229 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} [2024-11-09 14:54:28,230 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 186 predicate places. [2024-11-09 14:54:28,230 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 354 transitions, 5745 flow [2024-11-09 14:54:28,230 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) [2024-11-09 14:54:28,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:28,230 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] [2024-11-09 14:54:28,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 14:54:28,431 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 [2024-11-09 14:54:28,431 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:28,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1389262125, now seen corresponding path program 4 times [2024-11-09 14:54:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:28,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037357927] [2024-11-09 14:54:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:28,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037357927] [2024-11-09 14:54:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037357927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011920562] [2024-11-09 14:54:28,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 14:54:28,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:28,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:28,840 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) [2024-11-09 14:54:28,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 14:54:29,074 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 14:54:29,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:29,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 14:54:29,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:29,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011920562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:29,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-09 14:54:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897592253] [2024-11-09 14:54:29,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:29,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 14:54:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 14:54:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-11-09 14:54:29,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-09 14:54:29,375 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) [2024-11-09 14:54:29,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:29,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-09 14:54:29,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:38,224 INFO L124 PetriNetUnfolderBase]: 21355/41621 cut-off events. [2024-11-09 14:54:38,225 INFO L125 PetriNetUnfolderBase]: For 178634/178634 co-relation queries the response was YES. [2024-11-09 14:54:38,812 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.