./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:00:52,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:00:52,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:00:52,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:00:52,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:00:52,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:00:52,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:00:52,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:00:52,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:00:52,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:00:52,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:00:52,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:00:52,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:00:52,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:00:52,468 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:00:52,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:00:52,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:00:52,469 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:00:52,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:00:52,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:00:52,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:00:52,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:00:52,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:00:52,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:00:52,474 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:00:52,474 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:00:52,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:00:52,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:00:52,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:00:52,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:00:52,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:00:52,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:00:52,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:00:52,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:00:52,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:00:52,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:00:52,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:00:52,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:00:52,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:00:52,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:00:52,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:00:52,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:00:52,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:00:52,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:00:52,482 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-12 00:00:52,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:00:52,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:00:52,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:00:52,794 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:00:52,795 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:00:52,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-12 00:00:54,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:00:54,689 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:00:54,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-12 00:00:54,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/83968eeaa/ebb3eea4d01f4115abd1e5ce557473f8/FLAG32c684d30 [2024-10-12 00:00:54,714 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/83968eeaa/ebb3eea4d01f4115abd1e5ce557473f8 [2024-10-12 00:00:54,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:00:54,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:00:54,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:00:54,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:00:54,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:00:54,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:00:54" (1/1) ... [2024-10-12 00:00:54,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473a2f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:54, skipping insertion in model container [2024-10-12 00:00:54,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:00:54" (1/1) ... [2024-10-12 00:00:54,753 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:00:55,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:00:55,017 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:00:55,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:00:55,144 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:00:55,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55 WrapperNode [2024-10-12 00:00:55,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:00:55,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:00:55,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:00:55,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:00:55,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,215 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 332 [2024-10-12 00:00:55,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:00:55,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:00:55,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:00:55,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:00:55,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,272 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-12 00:00:55,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:00:55,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:00:55,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:00:55,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:00:55,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (1/1) ... [2024-10-12 00:00:55,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:00:55,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:00:55,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:00:55,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:00:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:00:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:00:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:00:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:00:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:00:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:00:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:00:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:00:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:00:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:00:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:00:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:00:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:00:55,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:00:55,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:00:55,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:00:55,437 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:00:55,596 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:00:55,598 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:00:56,119 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:00:56,120 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:00:56,377 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:00:56,377 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:00:56,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:56 BoogieIcfgContainer [2024-10-12 00:00:56,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:00:56,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:00:56,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:00:56,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:00:56,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:00:54" (1/3) ... [2024-10-12 00:00:56,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395dda24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:56, skipping insertion in model container [2024-10-12 00:00:56,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:00:55" (2/3) ... [2024-10-12 00:00:56,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395dda24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:56, skipping insertion in model container [2024-10-12 00:00:56,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:56" (3/3) ... [2024-10-12 00:00:56,387 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-12 00:00:56,447 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:00:56,447 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-12 00:00:56,447 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:00:56,530 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:00:56,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 277 flow [2024-10-12 00:00:56,641 INFO L124 PetriNetUnfolderBase]: 15/125 cut-off events. [2024-10-12 00:00:56,641 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:00:56,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 15/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2024-10-12 00:00:56,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 128 transitions, 277 flow [2024-10-12 00:00:56,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 123 transitions, 261 flow [2024-10-12 00:00:56,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:00:56,685 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;@71e604e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:00:56,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-10-12 00:00:56,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:00:56,691 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:00:56,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:00:56,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:00:56,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:00:56,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:00:56,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:00:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash 967357, now seen corresponding path program 1 times [2024-10-12 00:00:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:00:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719186901] [2024-10-12 00:00:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:00:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:00:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:00:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:00:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:00:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719186901] [2024-10-12 00:00:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719186901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:00:56,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:00:56,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:00:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064185431] [2024-10-12 00:00:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:00:56,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:00:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:00:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:00:57,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:00:57,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-12 00:00:57,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:00:57,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:00:57,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-12 00:00:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:00:59,558 INFO L124 PetriNetUnfolderBase]: 10162/19360 cut-off events. [2024-10-12 00:00:59,560 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-10-12 00:00:59,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33112 conditions, 19360 events. 10162/19360 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173874 event pairs, 6776 based on Foata normal form. 3/14956 useless extension candidates. Maximal degree in co-relation 31919. Up to 13364 conditions per place. [2024-10-12 00:00:59,771 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 62 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-10-12 00:00:59,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 423 flow [2024-10-12 00:00:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:00:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:00:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-10-12 00:00:59,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64453125 [2024-10-12 00:00:59,787 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 261 flow. Second operand 4 states and 330 transitions. [2024-10-12 00:00:59,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 423 flow [2024-10-12 00:00:59,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 414 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:00:59,799 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 340 flow [2024-10-12 00:00:59,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-10-12 00:00:59,807 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-10-12 00:00:59,808 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 340 flow [2024-10-12 00:00:59,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:00:59,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:00:59,809 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:00:59,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:00:59,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:00:59,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:00:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1245269406, now seen corresponding path program 1 times [2024-10-12 00:00:59,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:00:59,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053101375] [2024-10-12 00:00:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:00:59,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:00:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:00,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053101375] [2024-10-12 00:01:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053101375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:01:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221858581] [2024-10-12 00:01:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:00,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:00,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:00,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:01:00,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:01:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:00,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:01:00,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:01:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:00,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:01:00,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221858581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:00,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:01:00,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:01:00,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880466642] [2024-10-12 00:01:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:00,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:01:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:01:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:01:00,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-12 00:01:00,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:00,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:00,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-12 00:01:00,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:02,255 INFO L124 PetriNetUnfolderBase]: 10162/19357 cut-off events. [2024-10-12 00:01:02,256 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-12 00:01:02,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33001 conditions, 19357 events. 10162/19357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173866 event pairs, 6776 based on Foata normal form. 3/14958 useless extension candidates. Maximal degree in co-relation 32928. Up to 13349 conditions per place. [2024-10-12 00:01:02,537 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 52 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-10-12 00:01:02,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 466 flow [2024-10-12 00:01:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:01:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:01:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2024-10-12 00:01:02,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-12 00:01:02,546 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 340 flow. Second operand 6 states and 450 transitions. [2024-10-12 00:01:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 466 flow [2024-10-12 00:01:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:01:02,552 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 362 flow [2024-10-12 00:01:02,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2024-10-12 00:01:02,553 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-12 00:01:02,555 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 362 flow [2024-10-12 00:01:02,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:02,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:02,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:01:02,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:01:02,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:02,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:01:02,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 51355055, now seen corresponding path program 1 times [2024-10-12 00:01:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:02,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020021390] [2024-10-12 00:01:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:02,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020021390] [2024-10-12 00:01:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020021390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:01:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095934106] [2024-10-12 00:01:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:02,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:02,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:01:02,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:01:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:03,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:01:03,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:01:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:03,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:01:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095934106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:01:03,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:01:03,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:01:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670818954] [2024-10-12 00:01:03,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:01:03,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:01:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:01:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:01:03,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-12 00:01:03,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:03,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:03,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-12 00:01:03,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:05,233 INFO L124 PetriNetUnfolderBase]: 10171/19393 cut-off events. [2024-10-12 00:01:05,234 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-12 00:01:05,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 19393 events. 10171/19393 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 174131 event pairs, 6776 based on Foata normal form. 9/15000 useless extension candidates. Maximal degree in co-relation 32930. Up to 13364 conditions per place. [2024-10-12 00:01:05,440 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 59 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-10-12 00:01:05,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 156 transitions, 728 flow [2024-10-12 00:01:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:01:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:01:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 735 transitions. [2024-10-12 00:01:05,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-10-12 00:01:05,444 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 362 flow. Second operand 10 states and 735 transitions. [2024-10-12 00:01:05,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 156 transitions, 728 flow [2024-10-12 00:01:05,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 156 transitions, 645 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-12 00:01:05,450 INFO L231 Difference]: Finished difference. Result has 128 places, 156 transitions, 577 flow [2024-10-12 00:01:05,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=128, PETRI_TRANSITIONS=156} [2024-10-12 00:01:05,452 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2024-10-12 00:01:05,452 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 156 transitions, 577 flow [2024-10-12 00:01:05,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:05,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:05,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:05,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:01:05,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:01:05,659 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:01:05,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 83420374, now seen corresponding path program 1 times [2024-10-12 00:01:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14293896] [2024-10-12 00:01:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14293896] [2024-10-12 00:01:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14293896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:05,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671243088] [2024-10-12 00:01:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:05,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:01:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:01:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:01:05,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-12 00:01:05,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:05,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:05,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-12 00:01:05,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:09,744 INFO L124 PetriNetUnfolderBase]: 22073/42035 cut-off events. [2024-10-12 00:01:09,745 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-10-12 00:01:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71724 conditions, 42035 events. 22073/42035 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1975. Compared 417520 event pairs, 14676 based on Foata normal form. 250/32722 useless extension candidates. Maximal degree in co-relation 71597. Up to 14608 conditions per place. [2024-10-12 00:01:10,110 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 149 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-10-12 00:01:10,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 219 transitions, 1098 flow [2024-10-12 00:01:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:01:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:01:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2024-10-12 00:01:10,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015625 [2024-10-12 00:01:10,113 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 577 flow. Second operand 5 states and 449 transitions. [2024-10-12 00:01:10,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 219 transitions, 1098 flow [2024-10-12 00:01:10,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 219 transitions, 1051 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-12 00:01:10,120 INFO L231 Difference]: Finished difference. Result has 132 places, 157 transitions, 574 flow [2024-10-12 00:01:10,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=132, PETRI_TRANSITIONS=157} [2024-10-12 00:01:10,121 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2024-10-12 00:01:10,121 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 157 transitions, 574 flow [2024-10-12 00:01:10,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:10,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:10,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:10,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:01:10,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:01:10,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1708934626, now seen corresponding path program 1 times [2024-10-12 00:01:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785265685] [2024-10-12 00:01:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785265685] [2024-10-12 00:01:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785265685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631590981] [2024-10-12 00:01:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:10,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:01:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:01:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:01:10,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-12 00:01:10,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:10,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:10,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-12 00:01:10,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:17,686 INFO L124 PetriNetUnfolderBase]: 42648/80996 cut-off events. [2024-10-12 00:01:17,687 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2024-10-12 00:01:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139496 conditions, 80996 events. 42648/80996 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 3763. Compared 873547 event pairs, 28228 based on Foata normal form. 498/63945 useless extension candidates. Maximal degree in co-relation 139285. Up to 27997 conditions per place. [2024-10-12 00:01:18,492 INFO L140 encePairwiseOnDemand]: 119/128 looper letters, 165 selfloop transitions, 12 changer transitions 0/238 dead transitions. [2024-10-12 00:01:18,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 238 transitions, 1244 flow [2024-10-12 00:01:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:01:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:01:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2024-10-12 00:01:18,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-10-12 00:01:18,494 INFO L175 Difference]: Start difference. First operand has 132 places, 157 transitions, 574 flow. Second operand 7 states and 592 transitions. [2024-10-12 00:01:18,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 238 transitions, 1244 flow [2024-10-12 00:01:18,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 238 transitions, 1239 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:01:18,502 INFO L231 Difference]: Finished difference. Result has 142 places, 166 transitions, 693 flow [2024-10-12 00:01:18,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=142, PETRI_TRANSITIONS=166} [2024-10-12 00:01:18,503 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 24 predicate places. [2024-10-12 00:01:18,504 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 166 transitions, 693 flow [2024-10-12 00:01:18,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:18,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:18,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:18,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:01:18,505 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:01:18,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1440787923, now seen corresponding path program 1 times [2024-10-12 00:01:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984641745] [2024-10-12 00:01:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984641745] [2024-10-12 00:01:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984641745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:18,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:01:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61900429] [2024-10-12 00:01:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:18,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:01:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:01:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:01:18,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-12 00:01:18,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 166 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:18,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:18,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-12 00:01:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:32,860 INFO L124 PetriNetUnfolderBase]: 88832/167860 cut-off events. [2024-10-12 00:01:32,861 INFO L125 PetriNetUnfolderBase]: For 1163/1163 co-relation queries the response was YES. [2024-10-12 00:01:34,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286874 conditions, 167860 events. 88832/167860 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 7391. Compared 1959762 event pairs, 59128 based on Foata normal form. 1096/130884 useless extension candidates. Maximal degree in co-relation 286656. Up to 58808 conditions per place. [2024-10-12 00:01:35,051 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 131 selfloop transitions, 20 changer transitions 0/214 dead transitions. [2024-10-12 00:01:35,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 214 transitions, 1097 flow [2024-10-12 00:01:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:01:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:01:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2024-10-12 00:01:35,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696875 [2024-10-12 00:01:35,054 INFO L175 Difference]: Start difference. First operand has 142 places, 166 transitions, 693 flow. Second operand 5 states and 446 transitions. [2024-10-12 00:01:35,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 214 transitions, 1097 flow [2024-10-12 00:01:35,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 214 transitions, 1095 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-12 00:01:35,061 INFO L231 Difference]: Finished difference. Result has 148 places, 167 transitions, 748 flow [2024-10-12 00:01:35,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=748, PETRI_PLACES=148, PETRI_TRANSITIONS=167} [2024-10-12 00:01:35,062 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2024-10-12 00:01:35,062 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 167 transitions, 748 flow [2024-10-12 00:01:35,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:35,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:35,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:35,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:01:35,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-12 00:01:35,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1714751545, now seen corresponding path program 1 times [2024-10-12 00:01:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975924466] [2024-10-12 00:01:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:35,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975924466] [2024-10-12 00:01:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975924466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:01:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828914586] [2024-10-12 00:01:35,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:35,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:01:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:01:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:01:35,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-12 00:01:35,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 167 transitions, 748 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:35,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:35,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-12 00:01:35,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand