./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-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:09:03,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:09:03,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:09:03,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:09:03,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:09:03,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:09:03,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:09:03,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:09:03,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:09:03,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:09:03,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:09:03,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:09:03,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:09:03,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:09:03,997 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:09:03,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:09:03,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:09:03,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:09:03,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:09:03,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:09:03,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:09:04,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:09:04,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:09:04,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:09:04,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:09:04,001 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:09:04,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:09:04,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:09:04,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:09:04,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:09:04,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:09:04,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:09:04,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:09:04,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:09:04,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:04,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:09:04,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:09:04,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:09:04,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:09:04,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:09:04,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:09:04,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:09:04,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:09:04,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:09:04,009 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-10-12 00:09:04,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:09:04,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:09:04,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:09:04,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:09:04,334 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:09:04,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-12 00:09:05,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:09:06,173 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:09:06,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-12 00:09:06,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fbcd345f5/65a1a145b30f4fa2a58297e4256f9af5/FLAG737c10929 [2024-10-12 00:09:06,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fbcd345f5/65a1a145b30f4fa2a58297e4256f9af5 [2024-10-12 00:09:06,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:09:06,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:09:06,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:06,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:09:06,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:09:06,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b65057b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06, skipping insertion in model container [2024-10-12 00:09:06,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:09:06,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:06,533 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:09:06,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:06,597 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:09:06,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06 WrapperNode [2024-10-12 00:09:06,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:06,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:06,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:09:06,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:09:06,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,649 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-10-12 00:09:06,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:06,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:09:06,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:09:06,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:09:06,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,695 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-12 00:09:06,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:09:06,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:09:06,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:09:06,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:09:06,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (1/1) ... [2024-10-12 00:09:06,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:06,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:06,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:09:06,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:09:06,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:09:06,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:09:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:09:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:09:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:09:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:09:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:09:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:09:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:09:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:09:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:09:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:09:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:09:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:09:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:09:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:09:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:09:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:09:06,895 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:09:07,047 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:09:07,050 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:09:07,450 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:09:07,450 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:09:07,713 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:09:07,713 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:09:07,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:07 BoogieIcfgContainer [2024-10-12 00:09:07,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:09:07,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:09:07,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:09:07,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:09:07,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:09:06" (1/3) ... [2024-10-12 00:09:07,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e73ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:07, skipping insertion in model container [2024-10-12 00:09:07,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:06" (2/3) ... [2024-10-12 00:09:07,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e73ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:07, skipping insertion in model container [2024-10-12 00:09:07,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:07" (3/3) ... [2024-10-12 00:09:07,724 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-10-12 00:09:07,741 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:09:07,741 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-12 00:09:07,741 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:09:07,805 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:09:07,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2024-10-12 00:09:07,913 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2024-10-12 00:09:07,913 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:09:07,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 7/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-12 00:09:07,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2024-10-12 00:09:07,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2024-10-12 00:09:07,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:09:07,945 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;@6220e246, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:09:07,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-12 00:09:07,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:09:07,949 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:09:07,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:09:07,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:07,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:09:07,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:07,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 612274, now seen corresponding path program 1 times [2024-10-12 00:09:07,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445381099] [2024-10-12 00:09:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445381099] [2024-10-12 00:09:08,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445381099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:08,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:08,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:08,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522789175] [2024-10-12 00:09:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:08,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:08,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:08,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:08,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:08,781 INFO L124 PetriNetUnfolderBase]: 697/1438 cut-off events. [2024-10-12 00:09:08,781 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-12 00:09:08,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 1438 events. 697/1438 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8871 event pairs, 482 based on Foata normal form. 3/1141 useless extension candidates. Maximal degree in co-relation 2201. Up to 938 conditions per place. [2024-10-12 00:09:08,802 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 37 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-10-12 00:09:08,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 243 flow [2024-10-12 00:09:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-12 00:09:08,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2024-10-12 00:09:08,819 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 145 transitions. [2024-10-12 00:09:08,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 243 flow [2024-10-12 00:09:08,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:08,828 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2024-10-12 00:09:08,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2024-10-12 00:09:08,834 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-10-12 00:09:08,835 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2024-10-12 00:09:08,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:08,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:09:08,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:09:08,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:08,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1060991097, now seen corresponding path program 1 times [2024-10-12 00:09:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106570390] [2024-10-12 00:09:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106570390] [2024-10-12 00:09:09,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106570390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:09,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96625298] [2024-10-12 00:09:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:09,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:09,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:09,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:09,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:09:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:09,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:09,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:09,179 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:09:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96625298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:09:09,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:09:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30726363] [2024-10-12 00:09:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:09:09,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:09,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:09,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:09,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:09,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:09,570 INFO L124 PetriNetUnfolderBase]: 697/1435 cut-off events. [2024-10-12 00:09:09,571 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-12 00:09:09,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1435 events. 697/1435 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8870 event pairs, 482 based on Foata normal form. 3/1143 useless extension candidates. Maximal degree in co-relation 2394. Up to 923 conditions per place. [2024-10-12 00:09:09,588 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 27 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-10-12 00:09:09,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 286 flow [2024-10-12 00:09:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-10-12 00:09:09,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-10-12 00:09:09,593 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 185 transitions. [2024-10-12 00:09:09,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 286 flow [2024-10-12 00:09:09,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:09:09,596 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2024-10-12 00:09:09,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-12 00:09:09,599 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-10-12 00:09:09,599 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2024-10-12 00:09:09,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:09,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:09,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:09:09,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:09:09,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:09,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:09,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1469013752, now seen corresponding path program 1 times [2024-10-12 00:09:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:09,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11467953] [2024-10-12 00:09:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:09,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11467953] [2024-10-12 00:09:09,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11467953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520992601] [2024-10-12 00:09:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:09,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:09,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:09,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:09:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:10,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:10,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:10,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520992601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:10,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:10,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:09:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654023743] [2024-10-12 00:09:10,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:10,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:09:10,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:09:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:09:10,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:10,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:10,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:10,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:10,564 INFO L124 PetriNetUnfolderBase]: 706/1471 cut-off events. [2024-10-12 00:09:10,564 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-12 00:09:10,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1471 events. 706/1471 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9192 event pairs, 482 based on Foata normal form. 9/1185 useless extension candidates. Maximal degree in co-relation 2396. Up to 938 conditions per place. [2024-10-12 00:09:10,580 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 34 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2024-10-12 00:09:10,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 548 flow [2024-10-12 00:09:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:09:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:09:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-10-12 00:09:10,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-12 00:09:10,583 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 310 transitions. [2024-10-12 00:09:10,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 548 flow [2024-10-12 00:09:10,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 465 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:10,589 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2024-10-12 00:09:10,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-10-12 00:09:10,590 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-10-12 00:09:10,590 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2024-10-12 00:09:10,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:10,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:10,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:09:10,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:10,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1020442761, now seen corresponding path program 1 times [2024-10-12 00:09:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370680602] [2024-10-12 00:09:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:10,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370680602] [2024-10-12 00:09:10,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370680602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:10,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021967703] [2024-10-12 00:09:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:10,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:10,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:10,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-10-12 00:09:10,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:10,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-10-12 00:09:10,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:11,249 INFO L124 PetriNetUnfolderBase]: 1490/2560 cut-off events. [2024-10-12 00:09:11,250 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-12 00:09:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2560 events. 1490/2560 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15257 event pairs, 802 based on Foata normal form. 74/2061 useless extension candidates. Maximal degree in co-relation 4726. Up to 1559 conditions per place. [2024-10-12 00:09:11,275 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 99 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-10-12 00:09:11,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 725 flow [2024-10-12 00:09:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-12 00:09:11,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-12 00:09:11,277 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 177 transitions. [2024-10-12 00:09:11,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 725 flow [2024-10-12 00:09:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 124 transitions, 688 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:11,283 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2024-10-12 00:09:11,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-10-12 00:09:11,284 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-12 00:09:11,284 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2024-10-12 00:09:11,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:11,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:11,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:11,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:09:11,285 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:11,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1345993272, now seen corresponding path program 1 times [2024-10-12 00:09:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125804729] [2024-10-12 00:09:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125804729] [2024-10-12 00:09:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125804729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372642690] [2024-10-12 00:09:11,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:11,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:09:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:09:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:09:11,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-10-12 00:09:11,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2024-10-12 00:09:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-10-12 00:09:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:11,689 INFO L124 PetriNetUnfolderBase]: 1551/3174 cut-off events. [2024-10-12 00:09:11,690 INFO L125 PetriNetUnfolderBase]: For 955/1057 co-relation queries the response was YES. [2024-10-12 00:09:11,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 3174 events. 1551/3174 cut-off events. For 955/1057 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 22189 event pairs, 742 based on Foata normal form. 0/2684 useless extension candidates. Maximal degree in co-relation 6241. Up to 1534 conditions per place. [2024-10-12 00:09:11,724 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 86 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-10-12 00:09:11,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 675 flow [2024-10-12 00:09:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:09:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:09:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-12 00:09:11,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195767195767195 [2024-10-12 00:09:11,726 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 136 transitions. [2024-10-12 00:09:11,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 675 flow [2024-10-12 00:09:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:11,735 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2024-10-12 00:09:11,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2024-10-12 00:09:11,738 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2024-10-12 00:09:11,738 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2024-10-12 00:09:11,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2024-10-12 00:09:11,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:11,738 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:11,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:09:11,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:11,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 232420135, now seen corresponding path program 1 times [2024-10-12 00:09:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142803958] [2024-10-12 00:09:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142803958] [2024-10-12 00:09:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142803958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226780080] [2024-10-12 00:09:11,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:11,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:11,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-10-12 00:09:11,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:11,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:11,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-10-12 00:09:11,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:12,451 INFO L124 PetriNetUnfolderBase]: 2210/4359 cut-off events. [2024-10-12 00:09:12,451 INFO L125 PetriNetUnfolderBase]: For 1725/1757 co-relation queries the response was YES. [2024-10-12 00:09:12,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 4359 events. 2210/4359 cut-off events. For 1725/1757 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30065 event pairs, 1330 based on Foata normal form. 100/3915 useless extension candidates. Maximal degree in co-relation 9403. Up to 1991 conditions per place. [2024-10-12 00:09:12,505 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 96 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-10-12 00:09:12,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 819 flow [2024-10-12 00:09:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-10-12 00:09:12,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-12 00:09:12,507 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 255 transitions. [2024-10-12 00:09:12,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 819 flow [2024-10-12 00:09:12,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:12,520 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 543 flow [2024-10-12 00:09:12,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-10-12 00:09:12,522 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-12 00:09:12,522 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 543 flow [2024-10-12 00:09:12,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:12,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:12,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:12,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:09:12,523 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:12,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 714400379, now seen corresponding path program 1 times [2024-10-12 00:09:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859744916] [2024-10-12 00:09:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:12,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859744916] [2024-10-12 00:09:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859744916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:12,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:12,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:12,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942473432] [2024-10-12 00:09:12,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:12,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:12,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-12 00:09:12,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:12,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:12,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-12 00:09:12,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:13,364 INFO L124 PetriNetUnfolderBase]: 3397/5877 cut-off events. [2024-10-12 00:09:13,365 INFO L125 PetriNetUnfolderBase]: For 3921/3977 co-relation queries the response was YES. [2024-10-12 00:09:13,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14312 conditions, 5877 events. 3397/5877 cut-off events. For 3921/3977 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 37059 event pairs, 1779 based on Foata normal form. 236/5659 useless extension candidates. Maximal degree in co-relation 14209. Up to 3528 conditions per place. [2024-10-12 00:09:13,430 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 112 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-10-12 00:09:13,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 921 flow [2024-10-12 00:09:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-12 00:09:13,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-10-12 00:09:13,432 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 543 flow. Second operand 4 states and 169 transitions. [2024-10-12 00:09:13,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 921 flow [2024-10-12 00:09:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 905 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:13,442 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 548 flow [2024-10-12 00:09:13,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-10-12 00:09:13,443 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-10-12 00:09:13,443 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 548 flow [2024-10-12 00:09:13,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:13,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:13,444 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:13,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:09:13,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:13,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1139398177, now seen corresponding path program 1 times [2024-10-12 00:09:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648592714] [2024-10-12 00:09:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:13,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:13,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648592714] [2024-10-12 00:09:13,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648592714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868712744] [2024-10-12 00:09:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:13,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:13,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:13,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:13,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:09:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:13,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:09:13,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:13,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:09:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868712744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:09:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-10-12 00:09:13,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029850965] [2024-10-12 00:09:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:13,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:09:13,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-10-12 00:09:13,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:13,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:13,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-10-12 00:09:13,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:14,247 INFO L124 PetriNetUnfolderBase]: 2102/4010 cut-off events. [2024-10-12 00:09:14,247 INFO L125 PetriNetUnfolderBase]: For 3302/3366 co-relation queries the response was YES. [2024-10-12 00:09:14,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 4010 events. 2102/4010 cut-off events. For 3302/3366 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25734 event pairs, 1412 based on Foata normal form. 41/3536 useless extension candidates. Maximal degree in co-relation 9614. Up to 2491 conditions per place. [2024-10-12 00:09:14,301 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 82 selfloop transitions, 18 changer transitions 2/125 dead transitions. [2024-10-12 00:09:14,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 831 flow [2024-10-12 00:09:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-10-12 00:09:14,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322751322751323 [2024-10-12 00:09:14,304 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 548 flow. Second operand 6 states and 239 transitions. [2024-10-12 00:09:14,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 831 flow [2024-10-12 00:09:14,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:14,314 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 600 flow [2024-10-12 00:09:14,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2024-10-12 00:09:14,316 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-10-12 00:09:14,316 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 600 flow [2024-10-12 00:09:14,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:14,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:14,316 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:09:14,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:09:14,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:14,518 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:14,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1645532079, now seen corresponding path program 2 times [2024-10-12 00:09:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088846903] [2024-10-12 00:09:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088846903] [2024-10-12 00:09:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088846903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788098796] [2024-10-12 00:09:14,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:14,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:14,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:09:14,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:14,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:14,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:09:14,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:14,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:14,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788098796] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:14,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:14,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:09:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113577338] [2024-10-12 00:09:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:14,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:09:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:09:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:09:14,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:14,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 600 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:14,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:14,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:14,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:15,727 INFO L124 PetriNetUnfolderBase]: 1785/3578 cut-off events. [2024-10-12 00:09:15,727 INFO L125 PetriNetUnfolderBase]: For 3267/3281 co-relation queries the response was YES. [2024-10-12 00:09:15,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9440 conditions, 3578 events. 1785/3578 cut-off events. For 3267/3281 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 23756 event pairs, 1371 based on Foata normal form. 4/3305 useless extension candidates. Maximal degree in co-relation 9289. Up to 2504 conditions per place. [2024-10-12 00:09:15,769 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 40 selfloop transitions, 50 changer transitions 0/111 dead transitions. [2024-10-12 00:09:15,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 837 flow [2024-10-12 00:09:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:09:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:09:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 635 transitions. [2024-10-12 00:09:15,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.419973544973545 [2024-10-12 00:09:15,772 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 600 flow. Second operand 24 states and 635 transitions. [2024-10-12 00:09:15,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 837 flow [2024-10-12 00:09:15,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 803 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:15,783 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 747 flow [2024-10-12 00:09:15,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=747, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-10-12 00:09:15,784 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-10-12 00:09:15,785 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 747 flow [2024-10-12 00:09:15,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:15,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:15,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:15,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:09:15,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:09:15,990 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:15,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash 116033873, now seen corresponding path program 1 times [2024-10-12 00:09:15,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:15,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807116717] [2024-10-12 00:09:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:15,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:16,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:16,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807116717] [2024-10-12 00:09:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807116717] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:16,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476749944] [2024-10-12 00:09:16,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:16,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-12 00:09:16,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 747 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:16,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:16,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-12 00:09:16,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:16,997 INFO L124 PetriNetUnfolderBase]: 4003/7124 cut-off events. [2024-10-12 00:09:16,997 INFO L125 PetriNetUnfolderBase]: For 7210/7460 co-relation queries the response was YES. [2024-10-12 00:09:17,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18316 conditions, 7124 events. 4003/7124 cut-off events. For 7210/7460 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 47115 event pairs, 1946 based on Foata normal form. 127/6517 useless extension candidates. Maximal degree in co-relation 18221. Up to 3618 conditions per place. [2024-10-12 00:09:17,080 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 136 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2024-10-12 00:09:17,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 159 transitions, 1263 flow [2024-10-12 00:09:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-10-12 00:09:17,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-12 00:09:17,082 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 747 flow. Second operand 4 states and 171 transitions. [2024-10-12 00:09:17,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 159 transitions, 1263 flow [2024-10-12 00:09:17,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 1151 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-10-12 00:09:17,098 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 657 flow [2024-10-12 00:09:17,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2024-10-12 00:09:17,099 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 49 predicate places. [2024-10-12 00:09:17,101 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 657 flow [2024-10-12 00:09:17,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:17,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:17,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:09:17,102 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:17,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1266516722, now seen corresponding path program 1 times [2024-10-12 00:09:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785370884] [2024-10-12 00:09:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785370884] [2024-10-12 00:09:17,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785370884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137812948] [2024-10-12 00:09:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:17,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:17,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:17,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:17,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:09:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:17,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:17,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:17,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137812948] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:17,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:17,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-12 00:09:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323309601] [2024-10-12 00:09:17,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:17,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:09:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:09:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:09:17,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-10-12 00:09:17,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 657 flow. Second operand has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:17,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:17,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-10-12 00:09:17,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:19,639 INFO L124 PetriNetUnfolderBase]: 4749/7885 cut-off events. [2024-10-12 00:09:19,639 INFO L125 PetriNetUnfolderBase]: For 7578/8147 co-relation queries the response was YES. [2024-10-12 00:09:19,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22046 conditions, 7885 events. 4749/7885 cut-off events. For 7578/8147 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 50400 event pairs, 1093 based on Foata normal form. 285/7416 useless extension candidates. Maximal degree in co-relation 21884. Up to 1596 conditions per place. [2024-10-12 00:09:19,724 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 208 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-10-12 00:09:19,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 304 transitions, 2122 flow [2024-10-12 00:09:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 00:09:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-12 00:09:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 563 transitions. [2024-10-12 00:09:19,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256769374416433 [2024-10-12 00:09:19,727 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 657 flow. Second operand 17 states and 563 transitions. [2024-10-12 00:09:19,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 304 transitions, 2122 flow [2024-10-12 00:09:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:19,760 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1181 flow [2024-10-12 00:09:19,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1181, PETRI_PLACES=127, PETRI_TRANSITIONS=147} [2024-10-12 00:09:19,761 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-10-12 00:09:19,762 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1181 flow [2024-10-12 00:09:19,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:19,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:19,762 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:19,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:09:19,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 00:09:19,967 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:19,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1701626036, now seen corresponding path program 1 times [2024-10-12 00:09:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300819013] [2024-10-12 00:09:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300819013] [2024-10-12 00:09:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300819013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220870989] [2024-10-12 00:09:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:20,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:20,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:20,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:20,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:09:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:20,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:09:20,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 00:09:20,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 00:09:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220870989] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:20,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-10-12 00:09:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147262250] [2024-10-12 00:09:20,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:20,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:09:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:09:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:09:20,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:20,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 147 transitions, 1181 flow. Second operand has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:20,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:20,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:22,086 INFO L124 PetriNetUnfolderBase]: 4792/8521 cut-off events. [2024-10-12 00:09:22,086 INFO L125 PetriNetUnfolderBase]: For 13590/14073 co-relation queries the response was YES. [2024-10-12 00:09:22,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24835 conditions, 8521 events. 4792/8521 cut-off events. For 13590/14073 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 58250 event pairs, 3715 based on Foata normal form. 104/7884 useless extension candidates. Maximal degree in co-relation 24722. Up to 3619 conditions per place. [2024-10-12 00:09:22,188 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 65 selfloop transitions, 60 changer transitions 0/146 dead transitions. [2024-10-12 00:09:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 146 transitions, 1287 flow [2024-10-12 00:09:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:09:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-12 00:09:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-10-12 00:09:22,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-10-12 00:09:22,190 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1181 flow. Second operand 12 states and 362 transitions. [2024-10-12 00:09:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 146 transitions, 1287 flow [2024-10-12 00:09:22,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 1145 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-12 00:09:22,220 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 940 flow [2024-10-12 00:09:22,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=940, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2024-10-12 00:09:22,221 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 70 predicate places. [2024-10-12 00:09:22,221 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 940 flow [2024-10-12 00:09:22,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:22,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:22,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:22,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 00:09:22,423 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:22,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 793445938, now seen corresponding path program 1 times [2024-10-12 00:09:22,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952005074] [2024-10-12 00:09:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:09:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952005074] [2024-10-12 00:09:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952005074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:22,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:09:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636832883] [2024-10-12 00:09:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:22,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:22,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-10-12 00:09:22,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 940 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:22,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:22,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-10-12 00:09:22,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:23,448 INFO L124 PetriNetUnfolderBase]: 5790/9825 cut-off events. [2024-10-12 00:09:23,449 INFO L125 PetriNetUnfolderBase]: For 7440/7885 co-relation queries the response was YES. [2024-10-12 00:09:23,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25018 conditions, 9825 events. 5790/9825 cut-off events. For 7440/7885 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 66738 event pairs, 4425 based on Foata normal form. 66/8614 useless extension candidates. Maximal degree in co-relation 24912. Up to 7685 conditions per place. [2024-10-12 00:09:23,570 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 75 selfloop transitions, 17 changer transitions 28/142 dead transitions. [2024-10-12 00:09:23,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 1248 flow [2024-10-12 00:09:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-10-12 00:09:23,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-12 00:09:23,572 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 940 flow. Second operand 6 states and 234 transitions. [2024-10-12 00:09:23,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 1248 flow [2024-10-12 00:09:23,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1084 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-10-12 00:09:23,598 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 719 flow [2024-10-12 00:09:23,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=719, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-10-12 00:09:23,599 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-10-12 00:09:23,599 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 719 flow [2024-10-12 00:09:23,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:23,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:23,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:23,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 00:09:23,600 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:23,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash -501443449, now seen corresponding path program 1 times [2024-10-12 00:09:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000856635] [2024-10-12 00:09:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000856635] [2024-10-12 00:09:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000856635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490354505] [2024-10-12 00:09:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:23,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:23,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:09:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:23,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:09:23,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:23,842 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:09:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490354505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:09:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 00:09:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178087718] [2024-10-12 00:09:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:23,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:23,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:09:23,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2024-10-12 00:09:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 719 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:23,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:23,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2024-10-12 00:09:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:24,724 INFO L124 PetriNetUnfolderBase]: 6418/9784 cut-off events. [2024-10-12 00:09:24,724 INFO L125 PetriNetUnfolderBase]: For 6347/7316 co-relation queries the response was YES. [2024-10-12 00:09:24,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26708 conditions, 9784 events. 6418/9784 cut-off events. For 6347/7316 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 61516 event pairs, 729 based on Foata normal form. 493/9887 useless extension candidates. Maximal degree in co-relation 26611. Up to 3828 conditions per place. [2024-10-12 00:09:24,843 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 129 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2024-10-12 00:09:24,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 154 transitions, 1137 flow [2024-10-12 00:09:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-10-12 00:09:24,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-12 00:09:24,844 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 719 flow. Second operand 4 states and 160 transitions. [2024-10-12 00:09:24,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 154 transitions, 1137 flow [2024-10-12 00:09:24,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 1037 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-10-12 00:09:24,881 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 641 flow [2024-10-12 00:09:24,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=641, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2024-10-12 00:09:24,882 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2024-10-12 00:09:24,882 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 641 flow [2024-10-12 00:09:24,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:24,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:24,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:24,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:25,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:25,084 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:25,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -501443448, now seen corresponding path program 1 times [2024-10-12 00:09:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339248712] [2024-10-12 00:09:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339248712] [2024-10-12 00:09:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339248712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562286247] [2024-10-12 00:09:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:25,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:25,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:25,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:25,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:09:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:25,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:09:25,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:25,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562286247] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:25,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:09:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514996043] [2024-10-12 00:09:25,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:25,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:09:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:09:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:09:25,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-12 00:09:25,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 641 flow. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:25,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:25,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-12 00:09:25,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:26,782 INFO L124 PetriNetUnfolderBase]: 7968/13305 cut-off events. [2024-10-12 00:09:26,782 INFO L125 PetriNetUnfolderBase]: For 9797/10742 co-relation queries the response was YES. [2024-10-12 00:09:26,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34242 conditions, 13305 events. 7968/13305 cut-off events. For 9797/10742 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 92393 event pairs, 1436 based on Foata normal form. 915/13676 useless extension candidates. Maximal degree in co-relation 34154. Up to 3469 conditions per place. [2024-10-12 00:09:26,939 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 195 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2024-10-12 00:09:26,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 1426 flow [2024-10-12 00:09:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:09:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-12 00:09:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2024-10-12 00:09:26,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-12 00:09:26,941 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 641 flow. Second operand 7 states and 288 transitions. [2024-10-12 00:09:26,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 1426 flow [2024-10-12 00:09:26,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 224 transitions, 1404 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:26,989 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 692 flow [2024-10-12 00:09:26,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-10-12 00:09:26,992 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2024-10-12 00:09:26,992 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 692 flow [2024-10-12 00:09:26,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:26,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:26,992 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-10-12 00:09:27,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:09:27,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 00:09:27,194 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:27,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1504849555, now seen corresponding path program 2 times [2024-10-12 00:09:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818992972] [2024-10-12 00:09:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:27,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818992972] [2024-10-12 00:09:27,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818992972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751637848] [2024-10-12 00:09:27,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:27,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:27,618 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:27,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:09:27,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:27,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:27,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:09:27,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 00:09:27,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 00:09:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751637848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:27,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:27,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-10-12 00:09:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485496649] [2024-10-12 00:09:27,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:27,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:09:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:27,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:09:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:09:28,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-10-12 00:09:28,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 692 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:28,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:28,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-10-12 00:09:28,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:29,251 INFO L124 PetriNetUnfolderBase]: 5922/9570 cut-off events. [2024-10-12 00:09:29,251 INFO L125 PetriNetUnfolderBase]: For 14290/14578 co-relation queries the response was YES. [2024-10-12 00:09:29,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 9570 events. 5922/9570 cut-off events. For 14290/14578 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 61411 event pairs, 4337 based on Foata normal form. 107/8759 useless extension candidates. Maximal degree in co-relation 27551. Up to 7969 conditions per place. [2024-10-12 00:09:29,340 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 36 selfloop transitions, 70 changer transitions 0/127 dead transitions. [2024-10-12 00:09:29,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 967 flow [2024-10-12 00:09:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:09:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-12 00:09:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 514 transitions. [2024-10-12 00:09:29,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.429406850459482 [2024-10-12 00:09:29,343 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 692 flow. Second operand 19 states and 514 transitions. [2024-10-12 00:09:29,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 967 flow [2024-10-12 00:09:29,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 912 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-12 00:09:29,367 INFO L231 Difference]: Finished difference. Result has 125 places, 127 transitions, 840 flow [2024-10-12 00:09:29,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=840, PETRI_PLACES=125, PETRI_TRANSITIONS=127} [2024-10-12 00:09:29,368 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-10-12 00:09:29,368 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 127 transitions, 840 flow [2024-10-12 00:09:29,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:29,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:29,369 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:29,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:29,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:29,569 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:29,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash 272233574, now seen corresponding path program 1 times [2024-10-12 00:09:29,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:29,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026506749] [2024-10-12 00:09:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026506749] [2024-10-12 00:09:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026506749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077957907] [2024-10-12 00:09:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:29,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:29,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:29,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:09:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:29,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:29,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077957907] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:29,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:29,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:09:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413453284] [2024-10-12 00:09:29,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:29,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:09:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:09:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:09:29,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-10-12 00:09:29,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 840 flow. Second operand has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:29,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:29,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-10-12 00:09:29,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:31,482 INFO L124 PetriNetUnfolderBase]: 9517/15159 cut-off events. [2024-10-12 00:09:31,482 INFO L125 PetriNetUnfolderBase]: For 17024/17991 co-relation queries the response was YES. [2024-10-12 00:09:31,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41910 conditions, 15159 events. 9517/15159 cut-off events. For 17024/17991 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 100558 event pairs, 1988 based on Foata normal form. 816/14909 useless extension candidates. Maximal degree in co-relation 41826. Up to 6110 conditions per place. [2024-10-12 00:09:31,665 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 266 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-10-12 00:09:31,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 304 transitions, 2225 flow [2024-10-12 00:09:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:09:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:09:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 429 transitions. [2024-10-12 00:09:31,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-10-12 00:09:31,668 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 840 flow. Second operand 10 states and 429 transitions. [2024-10-12 00:09:31,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 304 transitions, 2225 flow [2024-10-12 00:09:31,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2078 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-12 00:09:31,692 INFO L231 Difference]: Finished difference. Result has 127 places, 136 transitions, 780 flow [2024-10-12 00:09:31,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=780, PETRI_PLACES=127, PETRI_TRANSITIONS=136} [2024-10-12 00:09:31,693 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-10-12 00:09:31,695 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 136 transitions, 780 flow [2024-10-12 00:09:31,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:31,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:31,695 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:31,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:31,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:09:31,896 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:31,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:31,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1998715420, now seen corresponding path program 1 times [2024-10-12 00:09:31,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:31,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229017265] [2024-10-12 00:09:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:31,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:09:31,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:31,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229017265] [2024-10-12 00:09:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229017265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:31,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:31,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880875588] [2024-10-12 00:09:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:31,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:31,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-12 00:09:31,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 136 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:31,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:31,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-12 00:09:31,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:33,622 INFO L124 PetriNetUnfolderBase]: 11512/19223 cut-off events. [2024-10-12 00:09:33,623 INFO L125 PetriNetUnfolderBase]: For 26914/27599 co-relation queries the response was YES. [2024-10-12 00:09:33,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56957 conditions, 19223 events. 11512/19223 cut-off events. For 26914/27599 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 136390 event pairs, 3463 based on Foata normal form. 522/19032 useless extension candidates. Maximal degree in co-relation 56879. Up to 7417 conditions per place. [2024-10-12 00:09:33,817 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 169 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2024-10-12 00:09:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 196 transitions, 1436 flow [2024-10-12 00:09:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-12 00:09:33,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6468253968253969 [2024-10-12 00:09:33,819 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 780 flow. Second operand 4 states and 163 transitions. [2024-10-12 00:09:33,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 196 transitions, 1436 flow [2024-10-12 00:09:33,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 196 transitions, 1384 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:33,938 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 787 flow [2024-10-12 00:09:33,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=787, PETRI_PLACES=126, PETRI_TRANSITIONS=136} [2024-10-12 00:09:33,939 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 65 predicate places. [2024-10-12 00:09:33,939 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 787 flow [2024-10-12 00:09:33,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:33,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:33,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:33,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:09:33,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:33,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 886737835, now seen corresponding path program 1 times [2024-10-12 00:09:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:33,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259158954] [2024-10-12 00:09:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259158954] [2024-10-12 00:09:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259158954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129141194] [2024-10-12 00:09:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:34,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:34,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:34,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:09:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:09:34,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:34,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:34,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129141194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:34,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:34,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-12 00:09:34,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137329852] [2024-10-12 00:09:34,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:34,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:09:34,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:09:34,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:09:34,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2024-10-12 00:09:34,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 136 transitions, 787 flow. Second operand has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:34,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:34,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2024-10-12 00:09:34,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:37,192 INFO L124 PetriNetUnfolderBase]: 13976/21968 cut-off events. [2024-10-12 00:09:37,192 INFO L125 PetriNetUnfolderBase]: For 48153/48353 co-relation queries the response was YES. [2024-10-12 00:09:37,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69249 conditions, 21968 events. 13976/21968 cut-off events. For 48153/48353 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 146575 event pairs, 1304 based on Foata normal form. 282/20231 useless extension candidates. Maximal degree in co-relation 69172. Up to 3636 conditions per place. [2024-10-12 00:09:37,479 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 312 selfloop transitions, 71 changer transitions 18/416 dead transitions. [2024-10-12 00:09:37,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 416 transitions, 3245 flow [2024-10-12 00:09:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:09:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-12 00:09:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 555 transitions. [2024-10-12 00:09:37,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46365914786967416 [2024-10-12 00:09:37,481 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 787 flow. Second operand 19 states and 555 transitions. [2024-10-12 00:09:37,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 416 transitions, 3245 flow [2024-10-12 00:09:37,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 416 transitions, 3140 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:37,563 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 935 flow [2024-10-12 00:09:37,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=935, PETRI_PLACES=142, PETRI_TRANSITIONS=141} [2024-10-12 00:09:37,565 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 81 predicate places. [2024-10-12 00:09:37,565 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 935 flow [2024-10-12 00:09:37,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:37,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:37,565 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:37,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:09:37,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:37,766 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:37,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash -915116344, now seen corresponding path program 2 times [2024-10-12 00:09:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971660285] [2024-10-12 00:09:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 00:09:37,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:37,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971660285] [2024-10-12 00:09:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971660285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31759230] [2024-10-12 00:09:37,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:37,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:37,874 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:37,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:09:37,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:37,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:37,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:09:37,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 00:09:38,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 00:09:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31759230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:38,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-10-12 00:09:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625769670] [2024-10-12 00:09:38,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:38,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:38,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-10-12 00:09:38,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 141 transitions, 935 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:38,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:38,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-10-12 00:09:38,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:39,969 INFO L124 PetriNetUnfolderBase]: 11015/18916 cut-off events. [2024-10-12 00:09:39,969 INFO L125 PetriNetUnfolderBase]: For 29310/29501 co-relation queries the response was YES. [2024-10-12 00:09:40,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57472 conditions, 18916 events. 11015/18916 cut-off events. For 29310/29501 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 135003 event pairs, 3161 based on Foata normal form. 298/18249 useless extension candidates. Maximal degree in co-relation 57384. Up to 8714 conditions per place. [2024-10-12 00:09:40,196 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 121 selfloop transitions, 7 changer transitions 30/176 dead transitions. [2024-10-12 00:09:40,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 176 transitions, 1410 flow [2024-10-12 00:09:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-10-12 00:09:40,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-10-12 00:09:40,197 INFO L175 Difference]: Start difference. First operand has 142 places, 141 transitions, 935 flow. Second operand 4 states and 158 transitions. [2024-10-12 00:09:40,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 176 transitions, 1410 flow [2024-10-12 00:09:40,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 176 transitions, 1303 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-12 00:09:40,290 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 729 flow [2024-10-12 00:09:40,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=729, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2024-10-12 00:09:40,291 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 72 predicate places. [2024-10-12 00:09:40,291 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 729 flow [2024-10-12 00:09:40,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:40,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:40,291 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:40,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 00:09:40,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:40,492 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:40,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1373870212, now seen corresponding path program 2 times [2024-10-12 00:09:40,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:40,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159362758] [2024-10-12 00:09:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-12 00:09:40,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159362758] [2024-10-12 00:09:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159362758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460194044] [2024-10-12 00:09:40,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:40,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:40,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:40,733 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:40,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:09:40,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:40,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:40,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:09:40,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-12 00:09:40,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-12 00:09:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460194044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:40,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-10-12 00:09:40,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610359964] [2024-10-12 00:09:40,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:09:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:40,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:09:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:09:41,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-10-12 00:09:41,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 120 transitions, 729 flow. Second operand has 11 states, 11 states have (on average 24.09090909090909) internal successors, (265), 11 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:41,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:41,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-10-12 00:09:41,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:42,678 INFO L124 PetriNetUnfolderBase]: 12111/19047 cut-off events. [2024-10-12 00:09:42,678 INFO L125 PetriNetUnfolderBase]: For 55067/55654 co-relation queries the response was YES. [2024-10-12 00:09:42,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61781 conditions, 19047 events. 12111/19047 cut-off events. For 55067/55654 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 130454 event pairs, 5278 based on Foata normal form. 292/17993 useless extension candidates. Maximal degree in co-relation 61699. Up to 5287 conditions per place. [2024-10-12 00:09:42,941 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 122 selfloop transitions, 55 changer transitions 8/204 dead transitions. [2024-10-12 00:09:42,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 1546 flow [2024-10-12 00:09:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 00:09:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-12 00:09:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 445 transitions. [2024-10-12 00:09:42,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44146825396825395 [2024-10-12 00:09:42,943 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 729 flow. Second operand 16 states and 445 transitions. [2024-10-12 00:09:42,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 1546 flow [2024-10-12 00:09:43,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 204 transitions, 1410 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-12 00:09:43,031 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 765 flow [2024-10-12 00:09:43,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=765, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-10-12 00:09:43,032 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-10-12 00:09:43,032 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 765 flow [2024-10-12 00:09:43,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.09090909090909) internal successors, (265), 11 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:43,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:43,033 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:43,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 00:09:43,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:43,233 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:43,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -993462637, now seen corresponding path program 1 times [2024-10-12 00:09:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186856076] [2024-10-12 00:09:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:43,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186856076] [2024-10-12 00:09:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186856076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806156052] [2024-10-12 00:09:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:43,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:43,338 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:43,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:09:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:43,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:43,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:43,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:43,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806156052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:43,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:09:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426865449] [2024-10-12 00:09:43,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:43,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:09:43,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:09:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:09:43,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-10-12 00:09:43,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 765 flow. Second operand has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:43,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:43,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-10-12 00:09:43,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:48,300 INFO L124 PetriNetUnfolderBase]: 29255/50266 cut-off events. [2024-10-12 00:09:48,301 INFO L125 PetriNetUnfolderBase]: For 107342/108322 co-relation queries the response was YES. [2024-10-12 00:09:49,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144764 conditions, 50266 events. 29255/50266 cut-off events. For 107342/108322 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 411233 event pairs, 6160 based on Foata normal form. 1524/49344 useless extension candidates. Maximal degree in co-relation 144696. Up to 11996 conditions per place. [2024-10-12 00:09:49,225 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 432 selfloop transitions, 9 changer transitions 0/457 dead transitions. [2024-10-12 00:09:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 457 transitions, 3629 flow [2024-10-12 00:09:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:09:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:09:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 394 transitions. [2024-10-12 00:09:49,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-10-12 00:09:49,227 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 765 flow. Second operand 10 states and 394 transitions. [2024-10-12 00:09:49,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 457 transitions, 3629 flow [2024-10-12 00:09:49,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 457 transitions, 3570 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-12 00:09:49,298 INFO L231 Difference]: Finished difference. Result has 125 places, 133 transitions, 770 flow [2024-10-12 00:09:49,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=770, PETRI_PLACES=125, PETRI_TRANSITIONS=133} [2024-10-12 00:09:49,299 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-10-12 00:09:49,299 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 133 transitions, 770 flow [2024-10-12 00:09:49,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:49,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:49,300 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:49,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:49,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 00:09:49,500 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-12 00:09:49,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1772001872, now seen corresponding path program 2 times [2024-10-12 00:09:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850687418] [2024-10-12 00:09:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 00:09:49,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850687418] [2024-10-12 00:09:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850687418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176784453] [2024-10-12 00:09:49,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:49,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:49,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:49,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:09:49,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:49,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:49,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:09:49,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-12 00:09:50,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-12 00:09:50,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176784453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:50,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:50,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-12 00:09:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045034740] [2024-10-12 00:09:50,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:50,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:09:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:09:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:09:50,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2024-10-12 00:09:50,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 770 flow. Second operand has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:50,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:50,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2024-10-12 00:09:50,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:56,784 INFO L124 PetriNetUnfolderBase]: 35779/60870 cut-off events. [2024-10-12 00:09:56,784 INFO L125 PetriNetUnfolderBase]: For 146575/147778 co-relation queries the response was YES. [2024-10-12 00:09:57,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182699 conditions, 60870 events. 35779/60870 cut-off events. For 146575/147778 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 502748 event pairs, 3275 based on Foata normal form. 508/58724 useless extension candidates. Maximal degree in co-relation 182629. Up to 12181 conditions per place. [2024-10-12 00:09:57,185 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 0 selfloop transitions, 0 changer transitions 384/384 dead transitions. [2024-10-12 00:09:57,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 384 transitions, 2946 flow [2024-10-12 00:09:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 00:09:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-12 00:09:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 567 transitions. [2024-10-12 00:09:57,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-12 00:09:57,186 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 770 flow. Second operand 21 states and 567 transitions. [2024-10-12 00:09:57,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 384 transitions, 2946 flow [2024-10-12 00:09:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 384 transitions, 2906 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-12 00:09:57,808 INFO L231 Difference]: Finished difference. Result has 138 places, 0 transitions, 0 flow [2024-10-12 00:09:57,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=138, PETRI_TRANSITIONS=0} [2024-10-12 00:09:57,809 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 77 predicate places. [2024-10-12 00:09:57,809 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 0 transitions, 0 flow [2024-10-12 00:09:57,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:57,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2024-10-12 00:09:57,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-10-12 00:09:57,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-10-12 00:09:57,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-10-12 00:09:57,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-10-12 00:09:57,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-10-12 00:09:57,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2024-10-12 00:09:57,815 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-10-12 00:09:57,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-10-12 00:09:57,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-10-12 00:09:57,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 00:09:58,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:58,018 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:58,024 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-12 00:09:58,025 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 00:09:58,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 12:09:58 BasicIcfg [2024-10-12 00:09:58,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 00:09:58,031 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:09:58,031 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:09:58,031 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:09:58,032 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:07" (3/4) ... [2024-10-12 00:09:58,034 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 00:09:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-12 00:09:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-12 00:09:58,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-12 00:09:58,047 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 146 nodes and edges [2024-10-12 00:09:58,048 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2024-10-12 00:09:58,048 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-12 00:09:58,049 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-12 00:09:58,155 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 00:09:58,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 00:09:58,156 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:09:58,157 INFO L158 Benchmark]: Toolchain (without parser) took 51955.57ms. Allocated memory was 172.0MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 102.9MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 968.3MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,157 INFO L158 Benchmark]: CDTParser took 1.42ms. Allocated memory is still 113.2MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:09:58,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.78ms. Allocated memory is still 172.0MB. Free memory was 102.7MB in the beginning and 89.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.18ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,158 INFO L158 Benchmark]: Boogie Preprocessor took 71.24ms. Allocated memory is still 172.0MB. Free memory was 87.2MB in the beginning and 84.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,158 INFO L158 Benchmark]: RCFGBuilder took 991.31ms. Allocated memory is still 172.0MB. Free memory was 84.4MB in the beginning and 88.4MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,159 INFO L158 Benchmark]: TraceAbstraction took 50313.63ms. Allocated memory was 172.0MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 87.8MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-10-12 00:09:58,159 INFO L158 Benchmark]: Witness Printer took 125.31ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 00:09:58,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42ms. Allocated memory is still 113.2MB. Free memory was 74.7MB in the beginning and 74.6MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.78ms. Allocated memory is still 172.0MB. Free memory was 102.7MB in the beginning and 89.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.18ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.24ms. Allocated memory is still 172.0MB. Free memory was 87.2MB in the beginning and 84.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 991.31ms. Allocated memory is still 172.0MB. Free memory was 84.4MB in the beginning and 88.4MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 50313.63ms. Allocated memory was 172.0MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 87.8MB in the beginning and 8.5GB in the end (delta: -8.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 125.31ms. Allocated memory is still 9.5GB. Free memory was 8.5GB in the beginning and 8.5GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 90 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 50.2s, OverallIterations: 23, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2470 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2305 mSDsluCounter, 2053 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9544 IncrementalHoareTripleChecker+Invalid, 10068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 524 mSolverCounterUnsat, 32 mSDtfsCounter, 9544 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 972 GetRequests, 673 SyntacticMatches, 9 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1181occurred in iteration=11, InterpolantAutomatonStates: 220, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 930 NumberOfCodeBlocks, 793 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1242 ConstructedInterpolants, 0 QuantifiedInterpolants, 3308 SizeOfPredicates, 47 NumberOfNonLiveVariables, 2462 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 50 InterpolantComputations, 11 PerfectInterpolantSequences, 800/1088 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-12 00:09:58,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE