./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:14:50,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:14:50,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:14:50,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:14:50,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:14:50,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:14:50,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:14:50,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:14:50,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:14:50,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:14:50,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:14:50,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:14:50,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:14:50,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:14:50,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:14:50,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:14:50,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:14:50,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:14:50,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:14:50,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:14:50,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:14:50,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:14:50,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:14:50,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:14:50,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:14:50,575 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:14:50,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:14:50,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:14:50,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:14:50,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:14:50,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:14:50,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:14:50,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:14:50,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:14:50,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:50,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:14:50,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:14:50,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:14:50,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:14:50,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:14:50,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:14:50,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:14:50,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:14:50,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:14:50,580 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-09 15:14:50,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:14:50,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:14:50,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:14:50,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:14:50,888 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:14:50,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-09 15:14:52,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:14:52,499 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:14:52,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-09 15:14:52,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f150c8f/a97c4869eda74861b32d52eaeaaff107/FLAG66024befd [2024-11-09 15:14:52,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f150c8f/a97c4869eda74861b32d52eaeaaff107 [2024-11-09 15:14:52,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:14:52,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:14:52,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:52,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:14:52,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:14:52,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c25c969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52, skipping insertion in model container [2024-11-09 15:14:52,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:14:52,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:52,762 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:14:52,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:52,805 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:14:52,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52 WrapperNode [2024-11-09 15:14:52,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:52,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:52,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:14:52,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:14:52,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,849 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-11-09 15:14:52,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:52,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:14:52,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:14:52,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:14:52,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,890 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]. [2024-11-09 15:14:52,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:14:52,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:14:52,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:14:52,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:14:52,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (1/1) ... [2024-11-09 15:14:52,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:52,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:14:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:14:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:14:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:14:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:14:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:14:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:14:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:14:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:14:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:14:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:14:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:14:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:14:52,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:14:52,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:14:53,000 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:14:53,137 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:14:53,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:14:53,538 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:14:53,538 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:14:53,762 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:14:53,762 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 15:14:53,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:53 BoogieIcfgContainer [2024-11-09 15:14:53,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:14:53,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:14:53,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:14:53,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:14:53,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:14:52" (1/3) ... [2024-11-09 15:14:53,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340de85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:53, skipping insertion in model container [2024-11-09 15:14:53,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:52" (2/3) ... [2024-11-09 15:14:53,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340de85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:53, skipping insertion in model container [2024-11-09 15:14:53,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:53" (3/3) ... [2024-11-09 15:14:53,773 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-09 15:14:53,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:14:53,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 15:14:53,789 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:14:53,867 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:14:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2024-11-09 15:14:53,932 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2024-11-09 15:14:53,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:14:53,937 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. [2024-11-09 15:14:53,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2024-11-09 15:14:53,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2024-11-09 15:14:53,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:14:53,955 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;@231eb8e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:14:53,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-09 15:14:53,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:14:53,958 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:14:53,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:14:53,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:53,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:14:53,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:53,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 612274, now seen corresponding path program 1 times [2024-11-09 15:14:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066230467] [2024-11-09 15:14:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066230467] [2024-11-09 15:14:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066230467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:14:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028278753] [2024-11-09 15:14:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:54,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:54,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:14:54,305 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) [2024-11-09 15:14:54,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:54,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:14:54,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:54,677 INFO L124 PetriNetUnfolderBase]: 697/1438 cut-off events. [2024-11-09 15:14:54,678 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-09 15:14:54,684 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. [2024-11-09 15:14:54,694 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 37 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-11-09 15:14:54,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 243 flow [2024-11-09 15:14:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-09 15:14:54,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2024-11-09 15:14:54,708 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 145 transitions. [2024-11-09 15:14:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 243 flow [2024-11-09 15:14:54,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:54,718 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2024-11-09 15:14:54,720 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} [2024-11-09 15:14:54,723 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 15:14:54,723 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2024-11-09 15:14:54,724 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) [2024-11-09 15:14:54,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:54,724 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:14:54,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:14:54,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:54,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1060991097, now seen corresponding path program 1 times [2024-11-09 15:14:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:54,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233873549] [2024-11-09 15:14:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233873549] [2024-11-09 15:14:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233873549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436109806] [2024-11-09 15:14:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:54,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:54,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:54,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:14:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:54,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:54,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:54,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436109806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:14:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714473094] [2024-11-09 15:14:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:54,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:14:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:14:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:14:55,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:14:55,017 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) [2024-11-09 15:14:55,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:55,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:14:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:55,300 INFO L124 PetriNetUnfolderBase]: 697/1435 cut-off events. [2024-11-09 15:14:55,300 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 15:14:55,304 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. [2024-11-09 15:14:55,311 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 27 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-11-09 15:14:55,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 286 flow [2024-11-09 15:14:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-11-09 15:14:55,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-09 15:14:55,315 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 185 transitions. [2024-11-09 15:14:55,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 286 flow [2024-11-09 15:14:55,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:14:55,321 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2024-11-09 15:14:55,321 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} [2024-11-09 15:14:55,322 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-09 15:14:55,322 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2024-11-09 15:14:55,322 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) [2024-11-09 15:14:55,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:55,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:14:55,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:14:55,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:55,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:55,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1469013752, now seen corresponding path program 1 times [2024-11-09 15:14:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089001461] [2024-11-09 15:14:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:55,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089001461] [2024-11-09 15:14:55,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089001461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616815220] [2024-11-09 15:14:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:55,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:55,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:14:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:55,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:55,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:55,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616815220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:55,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:14:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577920348] [2024-11-09 15:14:55,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:55,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:55,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:55,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:14:55,839 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) [2024-11-09 15:14:55,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:55,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:14:55,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:56,195 INFO L124 PetriNetUnfolderBase]: 706/1471 cut-off events. [2024-11-09 15:14:56,195 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-09 15:14:56,200 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. [2024-11-09 15:14:56,209 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 34 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2024-11-09 15:14:56,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 548 flow [2024-11-09 15:14:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-11-09 15:14:56,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-09 15:14:56,212 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 310 transitions. [2024-11-09 15:14:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 548 flow [2024-11-09 15:14:56,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 465 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:56,221 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2024-11-09 15:14:56,222 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} [2024-11-09 15:14:56,222 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-11-09 15:14:56,223 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2024-11-09 15:14:56,224 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) [2024-11-09 15:14:56,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:56,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:56,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:56,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:14:56,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:56,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1020442761, now seen corresponding path program 1 times [2024-11-09 15:14:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148523045] [2024-11-09 15:14:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148523045] [2024-11-09 15:14:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148523045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049383992] [2024-11-09 15:14:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:56,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:56,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-11-09 15:14:56,544 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) [2024-11-09 15:14:56,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:56,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-11-09 15:14:56,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:56,874 INFO L124 PetriNetUnfolderBase]: 1490/2560 cut-off events. [2024-11-09 15:14:56,874 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-09 15:14:56,879 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. [2024-11-09 15:14:56,892 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 99 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-09 15:14:56,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 725 flow [2024-11-09 15:14:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-09 15:14:56,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-11-09 15:14:56,895 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 177 transitions. [2024-11-09 15:14:56,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 725 flow [2024-11-09 15:14:56,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 124 transitions, 688 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:56,902 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2024-11-09 15:14:56,903 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} [2024-11-09 15:14:56,905 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-09 15:14:56,905 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2024-11-09 15:14:56,905 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) [2024-11-09 15:14:56,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:56,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:56,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:14:56,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:56,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1345993272, now seen corresponding path program 1 times [2024-11-09 15:14:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458907414] [2024-11-09 15:14:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458907414] [2024-11-09 15:14:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458907414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:56,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:14:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542527808] [2024-11-09 15:14:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:56,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:56,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-11-09 15:14:56,993 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) [2024-11-09 15:14:56,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:56,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-11-09 15:14:56,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:57,302 INFO L124 PetriNetUnfolderBase]: 1551/3174 cut-off events. [2024-11-09 15:14:57,303 INFO L125 PetriNetUnfolderBase]: For 955/1057 co-relation queries the response was YES. [2024-11-09 15:14:57,310 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. [2024-11-09 15:14:57,326 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 86 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-09 15:14:57,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 675 flow [2024-11-09 15:14:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-09 15:14:57,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195767195767195 [2024-11-09 15:14:57,327 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 136 transitions. [2024-11-09 15:14:57,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 675 flow [2024-11-09 15:14:57,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:57,332 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2024-11-09 15:14:57,333 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} [2024-11-09 15:14:57,333 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2024-11-09 15:14:57,333 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2024-11-09 15:14:57,334 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) [2024-11-09 15:14:57,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:57,334 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:57,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:14:57,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:57,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 232420135, now seen corresponding path program 1 times [2024-11-09 15:14:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627859743] [2024-11-09 15:14:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627859743] [2024-11-09 15:14:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627859743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:14:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016639958] [2024-11-09 15:14:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:57,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:57,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-11-09 15:14:57,447 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) [2024-11-09 15:14:57,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:57,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-11-09 15:14:57,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:57,965 INFO L124 PetriNetUnfolderBase]: 2210/4359 cut-off events. [2024-11-09 15:14:57,965 INFO L125 PetriNetUnfolderBase]: For 1725/1757 co-relation queries the response was YES. [2024-11-09 15:14:57,977 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. [2024-11-09 15:14:58,016 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 96 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-09 15:14:58,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 819 flow [2024-11-09 15:14:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-11-09 15:14:58,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-09 15:14:58,018 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 255 transitions. [2024-11-09 15:14:58,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 819 flow [2024-11-09 15:14:58,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:58,035 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 543 flow [2024-11-09 15:14:58,035 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} [2024-11-09 15:14:58,036 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-11-09 15:14:58,036 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 543 flow [2024-11-09 15:14:58,037 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) [2024-11-09 15:14:58,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:58,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:58,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:14:58,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:58,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 714400379, now seen corresponding path program 1 times [2024-11-09 15:14:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500938829] [2024-11-09 15:14:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:58,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500938829] [2024-11-09 15:14:58,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500938829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:58,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:58,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846248377] [2024-11-09 15:14:58,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:58,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:58,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:58,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:58,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-09 15:14:58,123 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) [2024-11-09 15:14:58,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:58,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-09 15:14:58,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:58,789 INFO L124 PetriNetUnfolderBase]: 3397/5877 cut-off events. [2024-11-09 15:14:58,839 INFO L125 PetriNetUnfolderBase]: For 3921/3977 co-relation queries the response was YES. [2024-11-09 15:14:58,853 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. [2024-11-09 15:14:58,878 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 112 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-09 15:14:58,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 921 flow [2024-11-09 15:14:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-09 15:14:58,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-09 15:14:58,880 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 543 flow. Second operand 4 states and 169 transitions. [2024-11-09 15:14:58,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 921 flow [2024-11-09 15:14:58,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 905 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:58,889 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 548 flow [2024-11-09 15:14:58,889 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} [2024-11-09 15:14:58,890 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-11-09 15:14:58,890 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 548 flow [2024-11-09 15:14:58,891 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) [2024-11-09 15:14:58,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:58,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:58,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:14:58,891 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:58,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1139398177, now seen corresponding path program 1 times [2024-11-09 15:14:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340493330] [2024-11-09 15:14:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:58,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340493330] [2024-11-09 15:14:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340493330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180086804] [2024-11-09 15:14:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:58,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:58,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:58,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:14:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:59,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:59,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:59,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180086804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:59,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-09 15:14:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497917716] [2024-11-09 15:14:59,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:59,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:14:59,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-09 15:14:59,124 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) [2024-11-09 15:14:59,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:59,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-09 15:14:59,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:59,617 INFO L124 PetriNetUnfolderBase]: 2102/4010 cut-off events. [2024-11-09 15:14:59,617 INFO L125 PetriNetUnfolderBase]: For 3302/3366 co-relation queries the response was YES. [2024-11-09 15:14:59,629 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. [2024-11-09 15:14:59,649 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 82 selfloop transitions, 18 changer transitions 2/125 dead transitions. [2024-11-09 15:14:59,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 831 flow [2024-11-09 15:14:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-11-09 15:14:59,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322751322751323 [2024-11-09 15:14:59,651 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 548 flow. Second operand 6 states and 239 transitions. [2024-11-09 15:14:59,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 831 flow [2024-11-09 15:14:59,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:59,695 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 600 flow [2024-11-09 15:14:59,695 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} [2024-11-09 15:14:59,696 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-11-09 15:14:59,696 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 600 flow [2024-11-09 15:14:59,697 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) [2024-11-09 15:14:59,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:59,697 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:14:59,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:14:59,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:59,898 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:14:59,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1645532079, now seen corresponding path program 2 times [2024-11-09 15:14:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668892192] [2024-11-09 15:14:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:00,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:00,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668892192] [2024-11-09 15:15:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668892192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234813048] [2024-11-09 15:15:00,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:00,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:00,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:00,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:15:00,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:00,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:00,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:15:00,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:15:00,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:15:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234813048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:00,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:00,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:15:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173709051] [2024-11-09 15:15:00,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:00,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:15:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:15:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:15:00,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:15:00,256 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) [2024-11-09 15:15:00,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:00,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:15:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:01,065 INFO L124 PetriNetUnfolderBase]: 1785/3578 cut-off events. [2024-11-09 15:15:01,065 INFO L125 PetriNetUnfolderBase]: For 3267/3281 co-relation queries the response was YES. [2024-11-09 15:15:01,074 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. [2024-11-09 15:15:01,085 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 40 selfloop transitions, 50 changer transitions 0/111 dead transitions. [2024-11-09 15:15:01,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 837 flow [2024-11-09 15:15:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:15:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:15:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 635 transitions. [2024-11-09 15:15:01,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.419973544973545 [2024-11-09 15:15:01,088 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 600 flow. Second operand 24 states and 635 transitions. [2024-11-09 15:15:01,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 837 flow [2024-11-09 15:15:01,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 803 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:15:01,096 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 747 flow [2024-11-09 15:15:01,096 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} [2024-11-09 15:15:01,098 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-11-09 15:15:01,098 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 747 flow [2024-11-09 15:15:01,099 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) [2024-11-09 15:15:01,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:01,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:01,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:01,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:01,304 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:01,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash 116033873, now seen corresponding path program 1 times [2024-11-09 15:15:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:01,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571222621] [2024-11-09 15:15:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571222621] [2024-11-09 15:15:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571222621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:01,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170247405] [2024-11-09 15:15:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:01,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:01,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-09 15:15:01,378 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) [2024-11-09 15:15:01,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:01,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-09 15:15:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:02,059 INFO L124 PetriNetUnfolderBase]: 4003/7124 cut-off events. [2024-11-09 15:15:02,059 INFO L125 PetriNetUnfolderBase]: For 7210/7460 co-relation queries the response was YES. [2024-11-09 15:15:02,078 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. [2024-11-09 15:15:02,104 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 136 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2024-11-09 15:15:02,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 159 transitions, 1263 flow [2024-11-09 15:15:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-09 15:15:02,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-09 15:15:02,106 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 747 flow. Second operand 4 states and 171 transitions. [2024-11-09 15:15:02,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 159 transitions, 1263 flow [2024-11-09 15:15:02,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 1151 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-11-09 15:15:02,117 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 657 flow [2024-11-09 15:15:02,117 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} [2024-11-09 15:15:02,118 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 49 predicate places. [2024-11-09 15:15:02,118 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 657 flow [2024-11-09 15:15:02,118 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) [2024-11-09 15:15:02,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:02,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:02,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:15:02,119 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:02,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1266516722, now seen corresponding path program 1 times [2024-11-09 15:15:02,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:02,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512281011] [2024-11-09 15:15:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:02,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512281011] [2024-11-09 15:15:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512281011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137187091] [2024-11-09 15:15:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:02,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:02,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:02,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:15:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:15:02,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:02,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137187091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:02,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:15:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504411261] [2024-11-09 15:15:02,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:02,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:15:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:15:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:15:02,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-09 15:15:02,783 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) [2024-11-09 15:15:02,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:02,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-09 15:15:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:04,115 INFO L124 PetriNetUnfolderBase]: 4749/7885 cut-off events. [2024-11-09 15:15:04,116 INFO L125 PetriNetUnfolderBase]: For 7578/8147 co-relation queries the response was YES. [2024-11-09 15:15:04,145 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. [2024-11-09 15:15:04,192 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 208 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-11-09 15:15:04,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 304 transitions, 2122 flow [2024-11-09 15:15:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:15:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:15:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 563 transitions. [2024-11-09 15:15:04,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256769374416433 [2024-11-09 15:15:04,195 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 657 flow. Second operand 17 states and 563 transitions. [2024-11-09 15:15:04,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 304 transitions, 2122 flow [2024-11-09 15:15:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:15:04,235 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1181 flow [2024-11-09 15:15:04,235 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} [2024-11-09 15:15:04,236 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-11-09 15:15:04,236 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1181 flow [2024-11-09 15:15:04,237 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) [2024-11-09 15:15:04,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:04,237 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:04,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:15:04,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 15:15:04,438 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:04,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1701626036, now seen corresponding path program 1 times [2024-11-09 15:15:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034569140] [2024-11-09 15:15:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:15:04,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034569140] [2024-11-09 15:15:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034569140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529098680] [2024-11-09 15:15:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:04,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:04,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:15:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 15:15:04,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:15:04,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:15:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529098680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:04,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-09 15:15:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777749989] [2024-11-09 15:15:04,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:04,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:15:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:15:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:15:05,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:15:05,189 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) [2024-11-09 15:15:05,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:05,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:15:05,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:06,279 INFO L124 PetriNetUnfolderBase]: 4792/8521 cut-off events. [2024-11-09 15:15:06,279 INFO L125 PetriNetUnfolderBase]: For 13590/14073 co-relation queries the response was YES. [2024-11-09 15:15:06,308 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. [2024-11-09 15:15:06,357 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 65 selfloop transitions, 60 changer transitions 0/146 dead transitions. [2024-11-09 15:15:06,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 146 transitions, 1287 flow [2024-11-09 15:15:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 15:15:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 15:15:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-11-09 15:15:06,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-11-09 15:15:06,360 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1181 flow. Second operand 12 states and 362 transitions. [2024-11-09 15:15:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 146 transitions, 1287 flow [2024-11-09 15:15:06,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 1145 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-09 15:15:06,391 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 940 flow [2024-11-09 15:15:06,391 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} [2024-11-09 15:15:06,392 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 70 predicate places. [2024-11-09 15:15:06,392 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 940 flow [2024-11-09 15:15:06,392 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) [2024-11-09 15:15:06,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:06,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:06,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:15:06,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:06,594 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:06,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 793445938, now seen corresponding path program 1 times [2024-11-09 15:15:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562386835] [2024-11-09 15:15:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:15:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562386835] [2024-11-09 15:15:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562386835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:15:06,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278094511] [2024-11-09 15:15:06,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:06,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:15:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:15:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:15:06,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-09 15:15:06,761 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) [2024-11-09 15:15:06,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:06,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-09 15:15:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:07,442 INFO L124 PetriNetUnfolderBase]: 5790/9825 cut-off events. [2024-11-09 15:15:07,443 INFO L125 PetriNetUnfolderBase]: For 7440/7885 co-relation queries the response was YES. [2024-11-09 15:15:07,466 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. [2024-11-09 15:15:07,504 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 75 selfloop transitions, 17 changer transitions 28/142 dead transitions. [2024-11-09 15:15:07,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 1248 flow [2024-11-09 15:15:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:15:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:15:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-11-09 15:15:07,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-09 15:15:07,506 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 940 flow. Second operand 6 states and 234 transitions. [2024-11-09 15:15:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 1248 flow [2024-11-09 15:15:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1084 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-09 15:15:07,536 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 719 flow [2024-11-09 15:15:07,536 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} [2024-11-09 15:15:07,537 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-11-09 15:15:07,537 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 719 flow [2024-11-09 15:15:07,537 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) [2024-11-09 15:15:07,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:07,538 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] [2024-11-09 15:15:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:15:07,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -501443449, now seen corresponding path program 1 times [2024-11-09 15:15:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895211393] [2024-11-09 15:15:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895211393] [2024-11-09 15:15:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895211393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458874089] [2024-11-09 15:15:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:07,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:07,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:07,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:07,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:15:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:07,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:15:07,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:07,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:15:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458874089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:07,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:15:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 15:15:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575373312] [2024-11-09 15:15:07,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:07,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:15:07,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2024-11-09 15:15:07,720 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) [2024-11-09 15:15:07,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:07,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2024-11-09 15:15:07,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:08,430 INFO L124 PetriNetUnfolderBase]: 6418/9784 cut-off events. [2024-11-09 15:15:08,431 INFO L125 PetriNetUnfolderBase]: For 6347/7316 co-relation queries the response was YES. [2024-11-09 15:15:08,456 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. [2024-11-09 15:15:08,487 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 129 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2024-11-09 15:15:08,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 154 transitions, 1137 flow [2024-11-09 15:15:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-09 15:15:08,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-09 15:15:08,489 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 719 flow. Second operand 4 states and 160 transitions. [2024-11-09 15:15:08,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 154 transitions, 1137 flow [2024-11-09 15:15:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 1037 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-11-09 15:15:08,527 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 641 flow [2024-11-09 15:15:08,527 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} [2024-11-09 15:15:08,528 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2024-11-09 15:15:08,528 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 641 flow [2024-11-09 15:15:08,528 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) [2024-11-09 15:15:08,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:08,528 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] [2024-11-09 15:15:08,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:15:08,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:08,729 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:08,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash -501443448, now seen corresponding path program 1 times [2024-11-09 15:15:08,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:08,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848231067] [2024-11-09 15:15:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:08,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848231067] [2024-11-09 15:15:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848231067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:08,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286440916] [2024-11-09 15:15:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:08,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:08,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:08,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:08,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:15:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:08,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:08,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:08,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286440916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:08,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:15:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030704354] [2024-11-09 15:15:08,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:15:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:15:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:15:09,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-09 15:15:09,007 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) [2024-11-09 15:15:09,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:09,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-09 15:15:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:10,214 INFO L124 PetriNetUnfolderBase]: 7968/13305 cut-off events. [2024-11-09 15:15:10,214 INFO L125 PetriNetUnfolderBase]: For 9797/10742 co-relation queries the response was YES. [2024-11-09 15:15:10,252 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. [2024-11-09 15:15:10,302 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 195 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2024-11-09 15:15:10,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 1426 flow [2024-11-09 15:15:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:15:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:15:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2024-11-09 15:15:10,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-09 15:15:10,304 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 641 flow. Second operand 7 states and 288 transitions. [2024-11-09 15:15:10,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 1426 flow [2024-11-09 15:15:10,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 224 transitions, 1404 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:15:10,341 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 692 flow [2024-11-09 15:15:10,341 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} [2024-11-09 15:15:10,342 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2024-11-09 15:15:10,342 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 692 flow [2024-11-09 15:15:10,342 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) [2024-11-09 15:15:10,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:10,343 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-09 15:15:10,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:15:10,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:15:10,544 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:10,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1504849555, now seen corresponding path program 2 times [2024-11-09 15:15:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148353639] [2024-11-09 15:15:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148353639] [2024-11-09 15:15:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148353639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120628068] [2024-11-09 15:15:10,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:10,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:10,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:10,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:15:11,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:11,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:11,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:15:11,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:15:11,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:15:11,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120628068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:11,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:11,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-09 15:15:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316765098] [2024-11-09 15:15:11,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:11,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:15:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:15:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:15:11,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-09 15:15:11,338 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) [2024-11-09 15:15:11,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:11,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-09 15:15:11,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:12,421 INFO L124 PetriNetUnfolderBase]: 5922/9570 cut-off events. [2024-11-09 15:15:12,421 INFO L125 PetriNetUnfolderBase]: For 14290/14578 co-relation queries the response was YES. [2024-11-09 15:15:12,440 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. [2024-11-09 15:15:12,466 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 36 selfloop transitions, 70 changer transitions 0/127 dead transitions. [2024-11-09 15:15:12,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 967 flow [2024-11-09 15:15:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 15:15:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 15:15:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 514 transitions. [2024-11-09 15:15:12,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.429406850459482 [2024-11-09 15:15:12,469 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 692 flow. Second operand 19 states and 514 transitions. [2024-11-09 15:15:12,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 967 flow [2024-11-09 15:15:12,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 912 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-09 15:15:12,487 INFO L231 Difference]: Finished difference. Result has 125 places, 127 transitions, 840 flow [2024-11-09 15:15:12,487 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} [2024-11-09 15:15:12,487 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-11-09 15:15:12,488 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 127 transitions, 840 flow [2024-11-09 15:15:12,488 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) [2024-11-09 15:15:12,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:12,488 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:12,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:12,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 15:15:12,689 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:12,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash 272233574, now seen corresponding path program 1 times [2024-11-09 15:15:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891775708] [2024-11-09 15:15:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:12,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:12,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891775708] [2024-11-09 15:15:12,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891775708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885037962] [2024-11-09 15:15:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:12,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:12,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:12,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:12,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:15:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:12,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:15:12,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:12,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:12,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885037962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:12,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:12,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:15:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279466381] [2024-11-09 15:15:12,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:12,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:15:12,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:15:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:15:12,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-11-09 15:15:12,981 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) [2024-11-09 15:15:12,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:12,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-11-09 15:15:12,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:14,108 INFO L124 PetriNetUnfolderBase]: 9517/15159 cut-off events. [2024-11-09 15:15:14,109 INFO L125 PetriNetUnfolderBase]: For 17024/17991 co-relation queries the response was YES. [2024-11-09 15:15:14,146 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. [2024-11-09 15:15:14,353 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 266 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-11-09 15:15:14,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 304 transitions, 2225 flow [2024-11-09 15:15:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:15:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:15:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 429 transitions. [2024-11-09 15:15:14,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-11-09 15:15:14,355 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 840 flow. Second operand 10 states and 429 transitions. [2024-11-09 15:15:14,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 304 transitions, 2225 flow [2024-11-09 15:15:14,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 304 transitions, 2078 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 15:15:14,375 INFO L231 Difference]: Finished difference. Result has 127 places, 136 transitions, 780 flow [2024-11-09 15:15:14,375 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} [2024-11-09 15:15:14,376 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-11-09 15:15:14,376 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 136 transitions, 780 flow [2024-11-09 15:15:14,376 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) [2024-11-09 15:15:14,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:14,376 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] [2024-11-09 15:15:14,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:14,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:15:14,581 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:14,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1998715420, now seen corresponding path program 1 times [2024-11-09 15:15:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215986020] [2024-11-09 15:15:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:15:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:14,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215986020] [2024-11-09 15:15:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215986020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:14,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:14,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750982785] [2024-11-09 15:15:14,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:14,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:14,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-09 15:15:14,655 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) [2024-11-09 15:15:14,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:14,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-09 15:15:14,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:16,072 INFO L124 PetriNetUnfolderBase]: 11512/19223 cut-off events. [2024-11-09 15:15:16,073 INFO L125 PetriNetUnfolderBase]: For 26914/27599 co-relation queries the response was YES. [2024-11-09 15:15:16,119 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. [2024-11-09 15:15:16,177 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 169 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2024-11-09 15:15:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 196 transitions, 1436 flow [2024-11-09 15:15:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-09 15:15:16,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6468253968253969 [2024-11-09 15:15:16,179 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 780 flow. Second operand 4 states and 163 transitions. [2024-11-09 15:15:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 196 transitions, 1436 flow [2024-11-09 15:15:16,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 196 transitions, 1384 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-09 15:15:16,282 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 787 flow [2024-11-09 15:15:16,282 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} [2024-11-09 15:15:16,283 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 65 predicate places. [2024-11-09 15:15:16,283 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 787 flow [2024-11-09 15:15:16,283 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) [2024-11-09 15:15:16,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:16,283 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] [2024-11-09 15:15:16,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:15:16,283 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:16,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash 886737835, now seen corresponding path program 1 times [2024-11-09 15:15:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712065148] [2024-11-09 15:15:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712065148] [2024-11-09 15:15:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712065148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246399703] [2024-11-09 15:15:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:16,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:16,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:16,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:15:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:16,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:15:16,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:16,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:15:16,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246399703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:16,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:16,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:15:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939222603] [2024-11-09 15:15:16,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:16,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:15:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:16,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:15:16,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:15:16,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2024-11-09 15:15:16,910 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) [2024-11-09 15:15:16,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:16,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2024-11-09 15:15:16,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:19,611 INFO L124 PetriNetUnfolderBase]: 13976/21968 cut-off events. [2024-11-09 15:15:19,612 INFO L125 PetriNetUnfolderBase]: For 48153/48353 co-relation queries the response was YES. [2024-11-09 15:15:19,695 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. [2024-11-09 15:15:19,791 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 312 selfloop transitions, 71 changer transitions 18/416 dead transitions. [2024-11-09 15:15:19,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 416 transitions, 3245 flow [2024-11-09 15:15:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 15:15:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 15:15:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 555 transitions. [2024-11-09 15:15:19,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46365914786967416 [2024-11-09 15:15:19,793 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 787 flow. Second operand 19 states and 555 transitions. [2024-11-09 15:15:19,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 416 transitions, 3245 flow [2024-11-09 15:15:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 416 transitions, 3140 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-09 15:15:19,868 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 935 flow [2024-11-09 15:15:19,868 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} [2024-11-09 15:15:19,869 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 81 predicate places. [2024-11-09 15:15:19,869 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 935 flow [2024-11-09 15:15:19,870 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) [2024-11-09 15:15:19,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:19,870 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] [2024-11-09 15:15:19,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 15:15:20,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:20,074 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:20,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash -915116344, now seen corresponding path program 2 times [2024-11-09 15:15:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:20,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841078014] [2024-11-09 15:15:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:20,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 15:15:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841078014] [2024-11-09 15:15:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841078014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959262779] [2024-11-09 15:15:20,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:20,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:20,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:20,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:20,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:15:20,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:20,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:20,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 15:15:20,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 15:15:20,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 15:15:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959262779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:20,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:20,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-09 15:15:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719883392] [2024-11-09 15:15:20,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:20,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:20,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-09 15:15:20,355 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) [2024-11-09 15:15:20,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:20,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-09 15:15:20,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:22,002 INFO L124 PetriNetUnfolderBase]: 11015/18916 cut-off events. [2024-11-09 15:15:22,002 INFO L125 PetriNetUnfolderBase]: For 29310/29501 co-relation queries the response was YES. [2024-11-09 15:15:22,086 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. [2024-11-09 15:15:22,143 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 121 selfloop transitions, 7 changer transitions 30/176 dead transitions. [2024-11-09 15:15:22,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 176 transitions, 1410 flow [2024-11-09 15:15:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-09 15:15:22,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-11-09 15:15:22,145 INFO L175 Difference]: Start difference. First operand has 142 places, 141 transitions, 935 flow. Second operand 4 states and 158 transitions. [2024-11-09 15:15:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 176 transitions, 1410 flow [2024-11-09 15:15:22,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 176 transitions, 1303 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-09 15:15:22,221 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 729 flow [2024-11-09 15:15:22,221 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} [2024-11-09 15:15:22,222 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 72 predicate places. [2024-11-09 15:15:22,222 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 729 flow [2024-11-09 15:15:22,222 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) [2024-11-09 15:15:22,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:22,222 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:22,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 15:15:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:22,423 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:22,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1373870212, now seen corresponding path program 2 times [2024-11-09 15:15:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563272847] [2024-11-09 15:15:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 15:15:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563272847] [2024-11-09 15:15:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563272847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569373696] [2024-11-09 15:15:22,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:22,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:22,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:22,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:22,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:15:22,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:22,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:22,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:22,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 15:15:22,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 15:15:22,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569373696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:22,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:22,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-09 15:15:22,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863900043] [2024-11-09 15:15:22,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:22,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:15:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:15:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:15:22,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-09 15:15:22,862 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) [2024-11-09 15:15:22,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:22,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-09 15:15:22,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:24,271 INFO L124 PetriNetUnfolderBase]: 12111/19047 cut-off events. [2024-11-09 15:15:24,271 INFO L125 PetriNetUnfolderBase]: For 55067/55654 co-relation queries the response was YES. [2024-11-09 15:15:24,350 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. [2024-11-09 15:15:24,414 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 122 selfloop transitions, 55 changer transitions 8/204 dead transitions. [2024-11-09 15:15:24,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 1546 flow [2024-11-09 15:15:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 15:15:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 15:15:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 445 transitions. [2024-11-09 15:15:24,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44146825396825395 [2024-11-09 15:15:24,416 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 729 flow. Second operand 16 states and 445 transitions. [2024-11-09 15:15:24,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 1546 flow [2024-11-09 15:15:24,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 204 transitions, 1410 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-09 15:15:24,496 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 765 flow [2024-11-09 15:15:24,496 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} [2024-11-09 15:15:24,497 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 66 predicate places. [2024-11-09 15:15:24,497 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 765 flow [2024-11-09 15:15:24,497 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) [2024-11-09 15:15:24,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:24,497 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] [2024-11-09 15:15:24,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:24,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 15:15:24,698 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:24,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:24,698 INFO L85 PathProgramCache]: Analyzing trace with hash -993462637, now seen corresponding path program 1 times [2024-11-09 15:15:24,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:24,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377858237] [2024-11-09 15:15:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377858237] [2024-11-09 15:15:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377858237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711398823] [2024-11-09 15:15:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:24,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:24,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:24,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:15:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:24,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:15:24,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:24,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711398823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:24,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:15:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742665533] [2024-11-09 15:15:24,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:24,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:15:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:15:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:15:24,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-09 15:15:24,992 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) [2024-11-09 15:15:24,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:24,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-09 15:15:24,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:29,625 INFO L124 PetriNetUnfolderBase]: 29255/50266 cut-off events. [2024-11-09 15:15:29,626 INFO L125 PetriNetUnfolderBase]: For 107342/108322 co-relation queries the response was YES. [2024-11-09 15:15:29,739 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. [2024-11-09 15:15:29,893 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 432 selfloop transitions, 9 changer transitions 0/457 dead transitions. [2024-11-09 15:15:29,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 457 transitions, 3629 flow [2024-11-09 15:15:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:15:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:15:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 394 transitions. [2024-11-09 15:15:29,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-11-09 15:15:29,895 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 765 flow. Second operand 10 states and 394 transitions. [2024-11-09 15:15:29,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 457 transitions, 3629 flow [2024-11-09 15:15:29,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 457 transitions, 3570 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-09 15:15:29,962 INFO L231 Difference]: Finished difference. Result has 125 places, 133 transitions, 770 flow [2024-11-09 15:15:29,962 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} [2024-11-09 15:15:29,963 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 64 predicate places. [2024-11-09 15:15:29,963 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 133 transitions, 770 flow [2024-11-09 15:15:29,963 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) [2024-11-09 15:15:29,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:29,964 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] [2024-11-09 15:15:29,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 15:15:30,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:30,164 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 15:15:30,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1772001872, now seen corresponding path program 2 times [2024-11-09 15:15:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658073927] [2024-11-09 15:15:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 15:15:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658073927] [2024-11-09 15:15:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658073927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287502290] [2024-11-09 15:15:30,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:30,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:30,397 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:30,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 15:15:30,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:30,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:30,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:30,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 15:15:30,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-09 15:15:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287502290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:30,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:30,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-11-09 15:15:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405383642] [2024-11-09 15:15:30,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:30,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:15:30,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:15:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:15:30,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2024-11-09 15:15:30,782 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) [2024-11-09 15:15:30,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:30,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2024-11-09 15:15:30,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:36,605 INFO L124 PetriNetUnfolderBase]: 35779/60870 cut-off events. [2024-11-09 15:15:36,606 INFO L125 PetriNetUnfolderBase]: For 146575/147778 co-relation queries the response was YES. [2024-11-09 15:15:37,016 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. [2024-11-09 15:15:37,054 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 0 selfloop transitions, 0 changer transitions 384/384 dead transitions. [2024-11-09 15:15:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 384 transitions, 2946 flow [2024-11-09 15:15:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:15:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:15:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 567 transitions. [2024-11-09 15:15:37,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-09 15:15:37,056 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 770 flow. Second operand 21 states and 567 transitions. [2024-11-09 15:15:37,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 384 transitions, 2946 flow [2024-11-09 15:15:37,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 384 transitions, 2906 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-09 15:15:37,482 INFO L231 Difference]: Finished difference. Result has 138 places, 0 transitions, 0 flow [2024-11-09 15:15:37,482 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} [2024-11-09 15:15:37,483 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 77 predicate places. [2024-11-09 15:15:37,483 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 0 transitions, 0 flow [2024-11-09 15:15:37,483 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) [2024-11-09 15:15:37,485 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-09 15:15:37,486 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-09 15:15:37,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-09 15:15:37,488 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-09 15:15:37,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 15:15:37,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:37,688 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:37,694 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:15:37,694 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:15:37,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:15:37 BasicIcfg [2024-11-09 15:15:37,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:15:37,698 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:15:37,699 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:15:37,699 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:15:37,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:53" (3/4) ... [2024-11-09 15:15:37,700 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:15:37,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 15:15:37,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 15:15:37,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-09 15:15:37,709 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 146 nodes and edges [2024-11-09 15:15:37,712 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2024-11-09 15:15:37,713 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-09 15:15:37,713 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 15:15:37,806 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:15:37,809 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:15:37,809 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:15:37,809 INFO L158 Benchmark]: Toolchain (without parser) took 45279.42ms. Allocated memory was 165.7MB in the beginning and 8.6GB in the end (delta: 8.5GB). Free memory was 127.4MB in the beginning and 7.4GB in the end (delta: -7.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-09 15:15:37,810 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:15:37,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.12ms. Allocated memory is still 165.7MB. Free memory was 127.4MB in the beginning and 114.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 15:15:37,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.02ms. Allocated memory is still 165.7MB. Free memory was 114.1MB in the beginning and 112.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:15:37,810 INFO L158 Benchmark]: Boogie Preprocessor took 53.11ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 109.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:15:37,811 INFO L158 Benchmark]: RCFGBuilder took 854.50ms. Allocated memory is still 165.7MB. Free memory was 109.2MB in the beginning and 51.9MB in the end (delta: 57.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-11-09 15:15:37,811 INFO L158 Benchmark]: TraceAbstraction took 43931.69ms. Allocated memory was 165.7MB in the beginning and 8.6GB in the end (delta: 8.5GB). Free memory was 51.2MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-09 15:15:37,811 INFO L158 Benchmark]: Witness Printer took 110.32ms. Allocated memory is still 8.6GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:15:37,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.12ms. Allocated memory is still 165.7MB. Free memory was 127.4MB in the beginning and 114.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.02ms. Allocated memory is still 165.7MB. Free memory was 114.1MB in the beginning and 112.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.11ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 109.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 854.50ms. Allocated memory is still 165.7MB. Free memory was 109.2MB in the beginning and 51.9MB in the end (delta: 57.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 43931.69ms. Allocated memory was 165.7MB in the beginning and 8.6GB in the end (delta: 8.5GB). Free memory was 51.2MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 110.32ms. Allocated memory is still 8.6GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 43.8s, OverallIterations: 23, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 34.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2470 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2305 mSDsluCounter, 2053 SdHoareTripleChecker+Invalid, 4.5s 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, 2.2s 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.1s 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! [2024-11-09 15:15:37,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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