./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/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:42:48,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:42:48,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:42:48,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:42:48,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:42:48,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:42:48,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:42:48,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:42:48,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:42:48,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:42:48,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:42:48,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:42:48,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:42:48,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:42:48,561 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:42:48,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:42:48,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:42:48,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:42:48,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:42:48,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:42:48,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:42:48,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:42:48,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:42:48,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:42:48,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:42:48,571 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:42:48,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:42:48,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:42:48,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:42:48,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:42:48,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:42:48,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:42:48,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:42:48,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:42:48,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:42:48,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:42:48,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:42:48,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:42:48,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:42:48,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:42:48,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:42:48,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:42:48,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:42:48,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:42:48,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-10-24 23:42:48,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:42:48,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:42:48,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:42:48,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:42:48,863 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:42:48,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-24 23:42:50,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:42:50,442 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:42:50,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-24 23:42:50,451 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414861ed1/acdd6b1648d6406f840aeceda57044a2/FLAG5a4c85b33 [2024-10-24 23:42:50,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414861ed1/acdd6b1648d6406f840aeceda57044a2 [2024-10-24 23:42:50,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:42:50,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:42:50,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:42:50,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:42:50,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:42:50,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:42:50" (1/1) ... [2024-10-24 23:42:50,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2d83e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:50, skipping insertion in model container [2024-10-24 23:42:50,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:42:50" (1/1) ... [2024-10-24 23:42:50,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:42:51,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:42:51,087 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:42:51,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:42:51,135 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:42:51,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51 WrapperNode [2024-10-24 23:42:51,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:42:51,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:42:51,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:42:51,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:42:51,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,212 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 360 [2024-10-24 23:42:51,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:42:51,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:42:51,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:42:51,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:42:51,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,290 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 23:42:51,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:42:51,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:42:51,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:42:51,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:42:51,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (1/1) ... [2024-10-24 23:42:51,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:42:51,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:51,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:42:51,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:42:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:42:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:42:51,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:42:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:42:51,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:42:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:42:51,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:42:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:42:51,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:42:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:42:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:42:51,414 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:42:51,517 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:42:51,518 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:42:52,115 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:42:52,115 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:42:53,009 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:42:53,010 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-24 23:42:53,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:42:53 BoogieIcfgContainer [2024-10-24 23:42:53,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:42:53,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:42:53,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:42:53,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:42:53,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:42:50" (1/3) ... [2024-10-24 23:42:53,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037e5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:42:53, skipping insertion in model container [2024-10-24 23:42:53,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:42:51" (2/3) ... [2024-10-24 23:42:53,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037e5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:42:53, skipping insertion in model container [2024-10-24 23:42:53,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:42:53" (3/3) ... [2024-10-24 23:42:53,022 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-10-24 23:42:53,038 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:42:53,039 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-24 23:42:53,039 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:42:53,272 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:42:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 199 flow [2024-10-24 23:42:53,409 INFO L124 PetriNetUnfolderBase]: 5/86 cut-off events. [2024-10-24 23:42:53,409 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:42:53,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 5/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 344 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-10-24 23:42:53,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 89 transitions, 199 flow [2024-10-24 23:42:53,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 84 transitions, 183 flow [2024-10-24 23:42:53,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:42:53,437 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;@7472a8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:42:53,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-10-24 23:42:53,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:42:53,441 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:42:53,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:42:53,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:53,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:42:53,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:53,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1361995, now seen corresponding path program 1 times [2024-10-24 23:42:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:53,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661240928] [2024-10-24 23:42:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:53,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661240928] [2024-10-24 23:42:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661240928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:42:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792251803] [2024-10-24 23:42:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:53,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:53,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-10-24 23:42:53,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:53,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:53,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-10-24 23:42:53,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:55,778 INFO L124 PetriNetUnfolderBase]: 5635/8587 cut-off events. [2024-10-24 23:42:55,778 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-10-24 23:42:55,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 8587 events. 5635/8587 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61148 event pairs, 4968 based on Foata normal form. 2/4231 useless extension candidates. Maximal degree in co-relation 16105. Up to 7974 conditions per place. [2024-10-24 23:42:55,845 INFO L140 encePairwiseOnDemand]: 60/89 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-10-24 23:42:55,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 269 flow [2024-10-24 23:42:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-10-24 23:42:55,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4410112359550562 [2024-10-24 23:42:55,858 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 183 flow. Second operand 4 states and 157 transitions. [2024-10-24 23:42:55,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 269 flow [2024-10-24 23:42:55,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:42:55,867 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 198 flow [2024-10-24 23:42:55,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-10-24 23:42:55,873 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2024-10-24 23:42:55,873 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 198 flow [2024-10-24 23:42:55,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:55,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:55,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:42:55,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:42:55,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:55,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1921820546, now seen corresponding path program 1 times [2024-10-24 23:42:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353286745] [2024-10-24 23:42:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:56,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353286745] [2024-10-24 23:42:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353286745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791860872] [2024-10-24 23:42:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:56,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:56,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:56,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:56,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:42:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:56,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:42:56,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:56,269 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:42:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791860872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:42:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:42:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17956853] [2024-10-24 23:42:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:56,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:42:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:42:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:42:56,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-10-24 23:42:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:56,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:56,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-10-24 23:42:56,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:58,066 INFO L124 PetriNetUnfolderBase]: 5635/8585 cut-off events. [2024-10-24 23:42:58,066 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 23:42:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16799 conditions, 8585 events. 5635/8585 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61148 event pairs, 4968 based on Foata normal form. 2/4232 useless extension candidates. Maximal degree in co-relation 16749. Up to 7964 conditions per place. [2024-10-24 23:42:58,120 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 41 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-10-24 23:42:58,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2024-10-24 23:42:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:42:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:42:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-24 23:42:58,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32771535580524347 [2024-10-24 23:42:58,123 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 198 flow. Second operand 6 states and 175 transitions. [2024-10-24 23:42:58,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2024-10-24 23:42:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:42:58,125 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 214 flow [2024-10-24 23:42:58,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-10-24 23:42:58,126 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2024-10-24 23:42:58,126 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 214 flow [2024-10-24 23:42:58,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:58,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:58,127 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:42:58,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:42:58,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:58,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:42:58,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash -553103877, now seen corresponding path program 1 times [2024-10-24 23:42:58,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042662103] [2024-10-24 23:42:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:58,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:58,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042662103] [2024-10-24 23:42:58,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042662103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088785751] [2024-10-24 23:42:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:58,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:58,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:58,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:42:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:58,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:42:58,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:58,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088785751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:58,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:42:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600584130] [2024-10-24 23:42:58,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:58,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:42:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:42:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:42:58,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-10-24 23:42:58,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:42:58,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:58,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-10-24 23:42:58,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:00,244 INFO L124 PetriNetUnfolderBase]: 5641/8609 cut-off events. [2024-10-24 23:43:00,244 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-10-24 23:43:00,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16893 conditions, 8609 events. 5641/8609 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 61366 event pairs, 4968 based on Foata normal form. 6/4259 useless extension candidates. Maximal degree in co-relation 16751. Up to 7975 conditions per place. [2024-10-24 23:43:00,303 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 46 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-10-24 23:43:00,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 470 flow [2024-10-24 23:43:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:43:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:43:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-10-24 23:43:00,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3112359550561798 [2024-10-24 23:43:00,306 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 214 flow. Second operand 10 states and 277 transitions. [2024-10-24 23:43:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 470 flow [2024-10-24 23:43:00,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:00,310 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 354 flow [2024-10-24 23:43:00,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-10-24 23:43:00,311 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2024-10-24 23:43:00,311 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 354 flow [2024-10-24 23:43:00,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:00,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:00,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:00,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:43:00,513 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,SelfDestructingSolverStorable2 [2024-10-24 23:43:00,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:00,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -461698551, now seen corresponding path program 1 times [2024-10-24 23:43:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13012185] [2024-10-24 23:43:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13012185] [2024-10-24 23:43:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13012185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:00,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984314173] [2024-10-24 23:43:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:00,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:00,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-10-24 23:43:00,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:00,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:00,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-10-24 23:43:00,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:02,308 INFO L124 PetriNetUnfolderBase]: 5639/8608 cut-off events. [2024-10-24 23:43:02,309 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-10-24 23:43:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 8608 events. 5639/8608 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61291 event pairs, 4968 based on Foata normal form. 3/4257 useless extension candidates. Maximal degree in co-relation 16834. Up to 7984 conditions per place. [2024-10-24 23:43:02,365 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 60 selfloop transitions, 7 changer transitions 1/87 dead transitions. [2024-10-24 23:43:02,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 484 flow [2024-10-24 23:43:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-10-24 23:43:02,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41853932584269665 [2024-10-24 23:43:02,367 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 354 flow. Second operand 4 states and 149 transitions. [2024-10-24 23:43:02,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 484 flow [2024-10-24 23:43:02,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 461 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:02,373 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 337 flow [2024-10-24 23:43:02,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-10-24 23:43:02,374 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-10-24 23:43:02,375 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 337 flow [2024-10-24 23:43:02,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:02,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:02,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:02,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:43:02,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:02,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash -250033678, now seen corresponding path program 1 times [2024-10-24 23:43:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684551055] [2024-10-24 23:43:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684551055] [2024-10-24 23:43:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684551055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910834095] [2024-10-24 23:43:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:02,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:02,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:02,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:43:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:02,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 23:43:02,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:02,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:02,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:03,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-24 23:43:03,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-24 23:43:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:03,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910834095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:03,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-24 23:43:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899393739] [2024-10-24 23:43:03,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:03,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:43:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:43:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:43:03,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-10-24 23:43:03,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 337 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:03,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:03,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-10-24 23:43:03,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:05,329 INFO L124 PetriNetUnfolderBase]: 9655/15811 cut-off events. [2024-10-24 23:43:05,330 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-24 23:43:05,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29816 conditions, 15811 events. 9655/15811 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 129827 event pairs, 1968 based on Foata normal form. 0/8288 useless extension candidates. Maximal degree in co-relation 29749. Up to 5348 conditions per place. [2024-10-24 23:43:05,434 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 102 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-10-24 23:43:05,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 709 flow [2024-10-24 23:43:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:43:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:43:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2024-10-24 23:43:05,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42134831460674155 [2024-10-24 23:43:05,437 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 337 flow. Second operand 8 states and 300 transitions. [2024-10-24 23:43:05,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 709 flow [2024-10-24 23:43:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 686 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:05,445 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 409 flow [2024-10-24 23:43:05,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-10-24 23:43:05,447 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2024-10-24 23:43:05,448 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 409 flow [2024-10-24 23:43:05,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:05,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:05,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:05,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:43:05,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:05,650 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:05,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash -250033668, now seen corresponding path program 1 times [2024-10-24 23:43:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696450863] [2024-10-24 23:43:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:05,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:05,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696450863] [2024-10-24 23:43:05,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696450863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:05,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:05,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:05,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728040747] [2024-10-24 23:43:05,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:05,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:05,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:05,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-10-24 23:43:05,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:05,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:05,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-10-24 23:43:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:07,797 INFO L124 PetriNetUnfolderBase]: 9101/15265 cut-off events. [2024-10-24 23:43:07,797 INFO L125 PetriNetUnfolderBase]: For 3386/3386 co-relation queries the response was YES. [2024-10-24 23:43:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34134 conditions, 15265 events. 9101/15265 cut-off events. For 3386/3386 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 126996 event pairs, 2968 based on Foata normal form. 0/8534 useless extension candidates. Maximal degree in co-relation 34066. Up to 8183 conditions per place. [2024-10-24 23:43:07,947 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 98 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-24 23:43:07,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 660 flow [2024-10-24 23:43:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-10-24 23:43:07,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5655430711610487 [2024-10-24 23:43:07,949 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 409 flow. Second operand 3 states and 151 transitions. [2024-10-24 23:43:07,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 660 flow [2024-10-24 23:43:07,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 119 transitions, 638 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:07,966 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 383 flow [2024-10-24 23:43:07,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-10-24 23:43:07,967 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2024-10-24 23:43:07,967 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 383 flow [2024-10-24 23:43:07,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:07,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:07,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:07,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:43:07,968 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:07,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -250033677, now seen corresponding path program 1 times [2024-10-24 23:43:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645855368] [2024-10-24 23:43:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:08,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:08,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645855368] [2024-10-24 23:43:08,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645855368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:08,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435682392] [2024-10-24 23:43:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:08,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:08,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:08,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:43:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:08,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 23:43:08,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:08,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:08,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:08,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-24 23:43:08,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-24 23:43:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435682392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:08,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-24 23:43:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737869896] [2024-10-24 23:43:08,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:08,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:43:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:43:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:43:08,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-10-24 23:43:08,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 383 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:08,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:08,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-10-24 23:43:08,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:10,401 INFO L124 PetriNetUnfolderBase]: 8559/14381 cut-off events. [2024-10-24 23:43:10,401 INFO L125 PetriNetUnfolderBase]: For 3603/3603 co-relation queries the response was YES. [2024-10-24 23:43:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32457 conditions, 14381 events. 8559/14381 cut-off events. For 3603/3603 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 119605 event pairs, 2657 based on Foata normal form. 0/8322 useless extension candidates. Maximal degree in co-relation 32390. Up to 4584 conditions per place. [2024-10-24 23:43:10,481 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 99 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2024-10-24 23:43:10,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 729 flow [2024-10-24 23:43:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:43:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:43:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-10-24 23:43:10,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41713483146067415 [2024-10-24 23:43:10,484 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 383 flow. Second operand 8 states and 297 transitions. [2024-10-24 23:43:10,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 729 flow [2024-10-24 23:43:10,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:10,499 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 423 flow [2024-10-24 23:43:10,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-10-24 23:43:10,500 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-10-24 23:43:10,500 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 423 flow [2024-10-24 23:43:10,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:10,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:10,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:10,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:10,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:10,705 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:10,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash -250033675, now seen corresponding path program 1 times [2024-10-24 23:43:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674838572] [2024-10-24 23:43:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674838572] [2024-10-24 23:43:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674838572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785761268] [2024-10-24 23:43:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:11,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:11,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:11,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:11,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:43:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:11,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 23:43:11,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:11,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:43:11,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:11,309 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:11,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:43:11,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 23:43:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:11,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:11,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-24 23:43:11,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:11,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-24 23:43:11,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-24 23:43:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:11,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785761268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:11,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:11,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-24 23:43:11,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438154420] [2024-10-24 23:43:11,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:11,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:43:11,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:43:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2024-10-24 23:43:11,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-10-24 23:43:11,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 423 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:11,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:11,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-10-24 23:43:11,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:13,565 INFO L124 PetriNetUnfolderBase]: 10185/15946 cut-off events. [2024-10-24 23:43:13,565 INFO L125 PetriNetUnfolderBase]: For 4941/4941 co-relation queries the response was YES. [2024-10-24 23:43:13,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 15946 events. 10185/15946 cut-off events. For 4941/4941 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 123195 event pairs, 6157 based on Foata normal form. 0/9579 useless extension candidates. Maximal degree in co-relation 38097. Up to 9813 conditions per place. [2024-10-24 23:43:13,658 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 108 selfloop transitions, 17 changer transitions 0/142 dead transitions. [2024-10-24 23:43:13,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 142 transitions, 779 flow [2024-10-24 23:43:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:43:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:43:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-10-24 23:43:13,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3575076608784474 [2024-10-24 23:43:13,660 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 423 flow. Second operand 11 states and 350 transitions. [2024-10-24 23:43:13,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 142 transitions, 779 flow [2024-10-24 23:43:13,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 142 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:13,676 INFO L231 Difference]: Finished difference. Result has 97 places, 90 transitions, 428 flow [2024-10-24 23:43:13,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2024-10-24 23:43:13,677 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-10-24 23:43:13,677 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 428 flow [2024-10-24 23:43:13,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:13,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:13,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:13,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:43:13,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:13,883 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:13,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash -250033674, now seen corresponding path program 1 times [2024-10-24 23:43:13,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:13,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861236408] [2024-10-24 23:43:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861236408] [2024-10-24 23:43:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861236408] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:14,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098331466] [2024-10-24 23:43:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:14,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:14,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:14,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:43:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:14,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:43:14,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:14,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:43:14,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:14,425 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:14,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:43:14,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:43:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:14,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:14,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-24 23:43:14,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:14,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-24 23:43:14,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-24 23:43:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098331466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:14,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:14,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-24 23:43:14,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733730836] [2024-10-24 23:43:14,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:14,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:43:14,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:14,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:43:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=189, Unknown=5, NotChecked=0, Total=240 [2024-10-24 23:43:14,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-10-24 23:43:14,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 428 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:14,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:14,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-10-24 23:43:14,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:17,598 INFO L124 PetriNetUnfolderBase]: 9643/15182 cut-off events. [2024-10-24 23:43:17,598 INFO L125 PetriNetUnfolderBase]: For 6494/6494 co-relation queries the response was YES. [2024-10-24 23:43:17,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37065 conditions, 15182 events. 9643/15182 cut-off events. For 6494/6494 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 116681 event pairs, 6157 based on Foata normal form. 222/9511 useless extension candidates. Maximal degree in co-relation 36995. Up to 9813 conditions per place. [2024-10-24 23:43:17,709 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 107 selfloop transitions, 17 changer transitions 0/141 dead transitions. [2024-10-24 23:43:17,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 141 transitions, 782 flow [2024-10-24 23:43:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:43:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:43:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 349 transitions. [2024-10-24 23:43:17,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3564862104187947 [2024-10-24 23:43:17,712 INFO L175 Difference]: Start difference. First operand has 97 places, 90 transitions, 428 flow. Second operand 11 states and 349 transitions. [2024-10-24 23:43:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 141 transitions, 782 flow [2024-10-24 23:43:17,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 759 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:17,727 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 435 flow [2024-10-24 23:43:17,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-10-24 23:43:17,731 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2024-10-24 23:43:17,731 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 435 flow [2024-10-24 23:43:17,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:17,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:17,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:17,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:17,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:17,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:17,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 235859774, now seen corresponding path program 1 times [2024-10-24 23:43:17,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:17,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247141102] [2024-10-24 23:43:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247141102] [2024-10-24 23:43:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247141102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:17,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617191340] [2024-10-24 23:43:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:17,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:18,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 89 [2024-10-24 23:43:18,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:18,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:18,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 89 [2024-10-24 23:43:18,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:19,679 INFO L124 PetriNetUnfolderBase]: 9643/14937 cut-off events. [2024-10-24 23:43:19,679 INFO L125 PetriNetUnfolderBase]: For 8723/8723 co-relation queries the response was YES. [2024-10-24 23:43:19,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37044 conditions, 14937 events. 9643/14937 cut-off events. For 8723/8723 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 112871 event pairs, 7157 based on Foata normal form. 444/9748 useless extension candidates. Maximal degree in co-relation 36974. Up to 11367 conditions per place. [2024-10-24 23:43:19,788 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 120 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-24 23:43:19,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 791 flow [2024-10-24 23:43:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-10-24 23:43:19,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2024-10-24 23:43:19,790 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 435 flow. Second operand 4 states and 188 transitions. [2024-10-24 23:43:19,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 791 flow [2024-10-24 23:43:19,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 758 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-24 23:43:19,815 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 423 flow [2024-10-24 23:43:19,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-10-24 23:43:19,817 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-10-24 23:43:19,817 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 423 flow [2024-10-24 23:43:19,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:19,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:19,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:19,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:43:19,818 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:19,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash 210036937, now seen corresponding path program 1 times [2024-10-24 23:43:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:19,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523885311] [2024-10-24 23:43:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:19,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523885311] [2024-10-24 23:43:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523885311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961151822] [2024-10-24 23:43:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:19,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:19,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:19,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:19,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:43:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:20,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:43:20,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:20,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961151822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:20,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 23:43:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046663513] [2024-10-24 23:43:20,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:20,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 23:43:20,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 23:43:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-24 23:43:20,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-10-24 23:43:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 423 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:20,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-10-24 23:43:20,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:22,241 INFO L124 PetriNetUnfolderBase]: 10187/16012 cut-off events. [2024-10-24 23:43:22,242 INFO L125 PetriNetUnfolderBase]: For 13886/13886 co-relation queries the response was YES. [2024-10-24 23:43:22,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42992 conditions, 16012 events. 10187/16012 cut-off events. For 13886/13886 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 119262 event pairs, 8260 based on Foata normal form. 1/9665 useless extension candidates. Maximal degree in co-relation 42895. Up to 11633 conditions per place. [2024-10-24 23:43:22,340 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 107 selfloop transitions, 40 changer transitions 0/164 dead transitions. [2024-10-24 23:43:22,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 1086 flow [2024-10-24 23:43:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:43:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:43:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 347 transitions. [2024-10-24 23:43:22,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3249063670411985 [2024-10-24 23:43:22,342 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 423 flow. Second operand 12 states and 347 transitions. [2024-10-24 23:43:22,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 1086 flow [2024-10-24 23:43:22,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 164 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:22,355 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 651 flow [2024-10-24 23:43:22,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-10-24 23:43:22,356 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2024-10-24 23:43:22,357 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 651 flow [2024-10-24 23:43:22,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:22,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:22,357 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:43:22,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:43:22,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:22,558 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:22,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1731142930, now seen corresponding path program 2 times [2024-10-24 23:43:22,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:22,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949303861] [2024-10-24 23:43:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:22,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949303861] [2024-10-24 23:43:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949303861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963968400] [2024-10-24 23:43:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:22,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:22,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:22,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:22,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:43:22,843 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:22,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:22,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:22,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:22,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:22,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963968400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:22,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:22,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:43:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177637938] [2024-10-24 23:43:22,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:22,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:43:22,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:43:22,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:43:22,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-10-24 23:43:22,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 651 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:22,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:22,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-10-24 23:43:22,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:24,722 INFO L124 PetriNetUnfolderBase]: 9448/15361 cut-off events. [2024-10-24 23:43:24,722 INFO L125 PetriNetUnfolderBase]: For 12000/12000 co-relation queries the response was YES. [2024-10-24 23:43:24,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41800 conditions, 15361 events. 9448/15361 cut-off events. For 12000/12000 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 119669 event pairs, 8470 based on Foata normal form. 3/9657 useless extension candidates. Maximal degree in co-relation 41679. Up to 13522 conditions per place. [2024-10-24 23:43:24,808 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 50 selfloop transitions, 46 changer transitions 0/114 dead transitions. [2024-10-24 23:43:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 114 transitions, 923 flow [2024-10-24 23:43:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:43:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:43:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 557 transitions. [2024-10-24 23:43:24,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2607677902621723 [2024-10-24 23:43:24,810 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 651 flow. Second operand 24 states and 557 transitions. [2024-10-24 23:43:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 114 transitions, 923 flow [2024-10-24 23:43:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 114 transitions, 889 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:24,819 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 813 flow [2024-10-24 23:43:24,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=813, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-10-24 23:43:24,820 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2024-10-24 23:43:24,820 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 813 flow [2024-10-24 23:43:24,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:24,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:24,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:24,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:43:25,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 23:43:25,022 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:25,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash -59998746, now seen corresponding path program 1 times [2024-10-24 23:43:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:25,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031018223] [2024-10-24 23:43:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:25,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031018223] [2024-10-24 23:43:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031018223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421681572] [2024-10-24 23:43:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:25,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:25,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:43:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:25,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 23:43:25,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:25,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:43:25,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:25,733 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:25,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:43:25,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:43:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:25,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:26,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:26,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-24 23:43:26,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:26,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-10-24 23:43:26,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-10-24 23:43:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421681572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:26,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 23:43:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656378913] [2024-10-24 23:43:26,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:26,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:43:26,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:43:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2024-10-24 23:43:26,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 89 [2024-10-24 23:43:26,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 813 flow. Second operand has 18 states, 18 states have (on average 16.11111111111111) internal successors, (290), 18 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:26,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:26,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 89 [2024-10-24 23:43:26,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:35,776 INFO L124 PetriNetUnfolderBase]: 41895/67100 cut-off events. [2024-10-24 23:43:35,776 INFO L125 PetriNetUnfolderBase]: For 50260/50260 co-relation queries the response was YES. [2024-10-24 23:43:36,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178062 conditions, 67100 events. 41895/67100 cut-off events. For 50260/50260 co-relation queries the response was YES. Maximal size of possible extension queue 2374. Compared 552088 event pairs, 25398 based on Foata normal form. 0/42459 useless extension candidates. Maximal degree in co-relation 177914. Up to 18639 conditions per place. [2024-10-24 23:43:36,373 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 275 selfloop transitions, 71 changer transitions 4/362 dead transitions. [2024-10-24 23:43:36,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 362 transitions, 2708 flow [2024-10-24 23:43:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:43:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:43:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 656 transitions. [2024-10-24 23:43:36,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28349178910976663 [2024-10-24 23:43:36,377 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 813 flow. Second operand 26 states and 656 transitions. [2024-10-24 23:43:36,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 362 transitions, 2708 flow [2024-10-24 23:43:36,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 362 transitions, 2556 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-10-24 23:43:36,568 INFO L231 Difference]: Finished difference. Result has 149 places, 140 transitions, 1047 flow [2024-10-24 23:43:36,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1047, PETRI_PLACES=149, PETRI_TRANSITIONS=140} [2024-10-24 23:43:36,569 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 60 predicate places. [2024-10-24 23:43:36,569 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 1047 flow [2024-10-24 23:43:36,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.11111111111111) internal successors, (290), 18 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:36,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:36,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:36,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:36,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 23:43:36,770 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:36,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash -59998747, now seen corresponding path program 1 times [2024-10-24 23:43:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:36,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603700762] [2024-10-24 23:43:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:36,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603700762] [2024-10-24 23:43:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603700762] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398420628] [2024-10-24 23:43:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:37,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:37,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:37,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:43:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:37,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 23:43:37,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:37,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:43:37,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:43:37,472 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:43:37,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:43:37,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 23:43:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:37,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:37,650 WARN L851 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_199 (Array Int Int))) (or (< ~M~0 0) (< c_~N~0 (+ ~M~0 1)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_199) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))))) is different from false [2024-10-24 23:43:37,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:37,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-10-24 23:43:37,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:43:37,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-10-24 23:43:37,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-10-24 23:43:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-24 23:43:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398420628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:37,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:37,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-10-24 23:43:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518807466] [2024-10-24 23:43:37,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:37,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:43:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:43:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2024-10-24 23:43:37,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 89 [2024-10-24 23:43:37,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 140 transitions, 1047 flow. Second operand has 21 states, 21 states have (on average 16.238095238095237) internal successors, (341), 21 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:37,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:37,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 89 [2024-10-24 23:43:37,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:47,995 INFO L124 PetriNetUnfolderBase]: 41236/66367 cut-off events. [2024-10-24 23:43:47,995 INFO L125 PetriNetUnfolderBase]: For 60751/60751 co-relation queries the response was YES. [2024-10-24 23:43:48,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186282 conditions, 66367 events. 41236/66367 cut-off events. For 60751/60751 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 551337 event pairs, 25398 based on Foata normal form. 550/46364 useless extension candidates. Maximal degree in co-relation 186150. Up to 18639 conditions per place. [2024-10-24 23:43:48,619 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 271 selfloop transitions, 72 changer transitions 4/359 dead transitions. [2024-10-24 23:43:48,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 359 transitions, 2747 flow [2024-10-24 23:43:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:43:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:43:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 620 transitions. [2024-10-24 23:43:48,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2902621722846442 [2024-10-24 23:43:48,622 INFO L175 Difference]: Start difference. First operand has 149 places, 140 transitions, 1047 flow. Second operand 24 states and 620 transitions. [2024-10-24 23:43:48,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 359 transitions, 2747 flow [2024-10-24 23:43:48,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 359 transitions, 2706 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:48,713 INFO L231 Difference]: Finished difference. Result has 167 places, 140 transitions, 1154 flow [2024-10-24 23:43:48,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1154, PETRI_PLACES=167, PETRI_TRANSITIONS=140} [2024-10-24 23:43:48,714 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 78 predicate places. [2024-10-24 23:43:48,714 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 140 transitions, 1154 flow [2024-10-24 23:43:48,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 16.238095238095237) internal successors, (341), 21 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:48,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:48,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:48,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:43:48,915 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,SelfDestructingSolverStorable13 [2024-10-24 23:43:48,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-24 23:43:48,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -59998741, now seen corresponding path program 1 times [2024-10-24 23:43:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:48,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953414162] [2024-10-24 23:43:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:48,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:43:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953414162] [2024-10-24 23:43:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953414162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994518406] [2024-10-24 23:43:49,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:49,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:49,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:49,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-10-24 23:43:49,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 140 transitions, 1154 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:49,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:49,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-10-24 23:43:49,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand