./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:51:39,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:51:39,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:51:39,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:51:39,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:51:39,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:51:39,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:51:39,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:51:39,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:51:39,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:51:39,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:51:39,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:51:39,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:51:39,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:51:39,882 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:51:39,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:51:39,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:51:39,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:51:39,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:51:39,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:51:39,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:51:39,885 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:51:39,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:51:39,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:39,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:51:39,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:51:39,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:51:39,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:51:39,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:51:39,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:51:39,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:51:39,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:51:39,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:51:39,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-13 16:51:40,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:51:40,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:51:40,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:51:40,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:51:40,110 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:51:40,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-13 16:51:41,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:51:41,474 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:51:41,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-13 16:51:41,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864f8c71d/85a3a5ef61344b6db5a3c5b30b66d8b6/FLAG1dc2bc30d [2024-10-13 16:51:41,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864f8c71d/85a3a5ef61344b6db5a3c5b30b66d8b6 [2024-10-13 16:51:41,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:51:41,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:51:41,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:41,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:51:41,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:51:41,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6948228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41, skipping insertion in model container [2024-10-13 16:51:41,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:51:41,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:41,685 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:51:41,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:41,725 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:51:41,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41 WrapperNode [2024-10-13 16:51:41,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:41,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:41,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:51:41,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:51:41,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,761 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 278 [2024-10-13 16:51:41,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:41,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:51:41,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:51:41,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:51:41,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,783 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:51:41,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:51:41,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:51:41,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:51:41,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:51:41,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (1/1) ... [2024-10-13 16:51:41,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:41,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:51:41,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:51:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:51:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:51:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:51:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:51:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:51:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:51:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:51:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 16:51:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:51:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:51:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:51:41,909 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:51:42,026 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:51:42,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:51:42,348 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:51:42,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:51:42,584 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:51:42,585 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-13 16:51:42,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:42 BoogieIcfgContainer [2024-10-13 16:51:42,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:51:42,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:51:42,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:51:42,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:51:42,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:51:41" (1/3) ... [2024-10-13 16:51:42,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd5b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:42, skipping insertion in model container [2024-10-13 16:51:42,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:41" (2/3) ... [2024-10-13 16:51:42,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd5b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:42, skipping insertion in model container [2024-10-13 16:51:42,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:42" (3/3) ... [2024-10-13 16:51:42,592 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-13 16:51:42,605 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:51:42,605 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-13 16:51:42,605 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:51:42,654 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 16:51:42,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2024-10-13 16:51:42,713 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2024-10-13 16:51:42,713 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 16:51:42,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-13 16:51:42,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2024-10-13 16:51:42,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2024-10-13 16:51:42,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:51:42,729 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;@70ec35b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:51:42,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-13 16:51:42,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:51:42,731 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:51:42,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:51:42,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:42,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:51:42,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:42,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 815461, now seen corresponding path program 1 times [2024-10-13 16:51:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925420908] [2024-10-13 16:51:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925420908] [2024-10-13 16:51:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925420908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:43,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:43,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923757042] [2024-10-13 16:51:43,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:43,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:43,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:43,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-13 16:51:43,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:43,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:43,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-13 16:51:43,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:46,053 INFO L124 PetriNetUnfolderBase]: 31498/43058 cut-off events. [2024-10-13 16:51:46,054 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2024-10-13 16:51:46,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85356 conditions, 43058 events. 31498/43058 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293362 event pairs, 25002 based on Foata normal form. 2/28231 useless extension candidates. Maximal degree in co-relation 80473. Up to 40235 conditions per place. [2024-10-13 16:51:46,334 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-13 16:51:46,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 281 flow [2024-10-13 16:51:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-13 16:51:46,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-10-13 16:51:46,348 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 145 transitions. [2024-10-13 16:51:46,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 281 flow [2024-10-13 16:51:46,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 16:51:46,445 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2024-10-13 16:51:46,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-13 16:51:46,449 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-13 16:51:46,449 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2024-10-13 16:51:46,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:46,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:46,450 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:51:46,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:51:46,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:46,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1475571405, now seen corresponding path program 1 times [2024-10-13 16:51:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:46,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43814221] [2024-10-13 16:51:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:46,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43814221] [2024-10-13 16:51:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43814221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522252741] [2024-10-13 16:51:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:46,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:46,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:51:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:46,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:46,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:46,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522252741] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:46,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:46,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:51:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459042515] [2024-10-13 16:51:46,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:46,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:51:46,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:51:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:51:46,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-13 16:51:46,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:46,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:46,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-13 16:51:46,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:49,128 INFO L124 PetriNetUnfolderBase]: 31498/43056 cut-off events. [2024-10-13 16:51:49,128 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-13 16:51:49,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84756 conditions, 43056 events. 31498/43056 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293497 event pairs, 25002 based on Foata normal form. 2/28232 useless extension candidates. Maximal degree in co-relation 84706. Up to 40225 conditions per place. [2024-10-13 16:51:49,331 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-10-13 16:51:49,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 304 flow [2024-10-13 16:51:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:51:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:51:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-13 16:51:49,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-10-13 16:51:49,334 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 177 transitions. [2024-10-13 16:51:49,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 304 flow [2024-10-13 16:51:49,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:51:49,335 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2024-10-13 16:51:49,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-10-13 16:51:49,336 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-13 16:51:49,336 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2024-10-13 16:51:49,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:49,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:49,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:51:49,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:49,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:49,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:49,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1501927541, now seen corresponding path program 1 times [2024-10-13 16:51:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205560002] [2024-10-13 16:51:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205560002] [2024-10-13 16:51:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205560002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071929146] [2024-10-13 16:51:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:49,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:49,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:49,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:51:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:49,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:49,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:49,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:49,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071929146] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:49,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:51:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201683349] [2024-10-13 16:51:49,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:49,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:51:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:51:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:51:49,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-13 16:51:49,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:49,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:49,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-13 16:51:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:51,931 INFO L124 PetriNetUnfolderBase]: 31504/43080 cut-off events. [2024-10-13 16:51:51,931 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-13 16:51:51,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84850 conditions, 43080 events. 31504/43080 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293918 event pairs, 25002 based on Foata normal form. 6/28259 useless extension candidates. Maximal degree in co-relation 84708. Up to 40236 conditions per place. [2024-10-13 16:51:52,137 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 48 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-10-13 16:51:52,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 478 flow [2024-10-13 16:51:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:51:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:51:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-13 16:51:52,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36233766233766235 [2024-10-13 16:51:52,139 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 279 transitions. [2024-10-13 16:51:52,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 478 flow [2024-10-13 16:51:52,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-13 16:51:52,142 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2024-10-13 16:51:52,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-10-13 16:51:52,143 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-13 16:51:52,143 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2024-10-13 16:51:52,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:52,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:52,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:52,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:51:52,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 16:51:52,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:52,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:52,345 INFO L85 PathProgramCache]: Analyzing trace with hash 271305435, now seen corresponding path program 1 times [2024-10-13 16:51:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485014176] [2024-10-13 16:51:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:52,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485014176] [2024-10-13 16:51:52,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485014176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:52,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546436333] [2024-10-13 16:51:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:52,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:52,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:51:52,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:52,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:51:52,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:55,378 INFO L124 PetriNetUnfolderBase]: 35298/48559 cut-off events. [2024-10-13 16:51:55,378 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2024-10-13 16:51:55,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95727 conditions, 48559 events. 35298/48559 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 2760. Compared 332762 event pairs, 28323 based on Foata normal form. 712/33932 useless extension candidates. Maximal degree in co-relation 95631. Up to 40251 conditions per place. [2024-10-13 16:51:55,614 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 108 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-13 16:51:55,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 749 flow [2024-10-13 16:51:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:51:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:51:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-10-13 16:51:55,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376623376623376 [2024-10-13 16:51:55,616 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 207 transitions. [2024-10-13 16:51:55,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 749 flow [2024-10-13 16:51:55,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 715 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:55,619 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2024-10-13 16:51:55,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-10-13 16:51:55,620 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:51:55,621 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2024-10-13 16:51:55,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:55,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:55,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:55,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:51:55,622 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:55,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash -151225108, now seen corresponding path program 1 times [2024-10-13 16:51:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443766119] [2024-10-13 16:51:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443766119] [2024-10-13 16:51:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443766119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477920821] [2024-10-13 16:51:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:55,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:55,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:51:55,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:55,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:51:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:58,359 INFO L124 PetriNetUnfolderBase]: 32734/46008 cut-off events. [2024-10-13 16:51:58,360 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-10-13 16:51:58,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95277 conditions, 46008 events. 32734/46008 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 317361 event pairs, 11055 based on Foata normal form. 751/32668 useless extension candidates. Maximal degree in co-relation 95182. Up to 32693 conditions per place. [2024-10-13 16:51:58,571 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 99 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-13 16:51:58,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 645 flow [2024-10-13 16:51:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-13 16:51:58,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-10-13 16:51:58,572 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 149 transitions. [2024-10-13 16:51:58,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 645 flow [2024-10-13 16:51:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:58,579 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 383 flow [2024-10-13 16:51:58,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-13 16:51:58,580 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-13 16:51:58,580 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 383 flow [2024-10-13 16:51:58,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:58,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:58,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:58,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:51:58,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:51:58,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 714889257, now seen corresponding path program 1 times [2024-10-13 16:51:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347128593] [2024-10-13 16:51:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:58,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347128593] [2024-10-13 16:51:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347128593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930916486] [2024-10-13 16:51:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:58,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:58,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:58,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:51:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:58,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:58,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:58,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930916486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:58,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-13 16:51:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918381154] [2024-10-13 16:51:58,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:58,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:51:58,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:51:58,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:58,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:58,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:51:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:00,887 INFO L124 PetriNetUnfolderBase]: 25607/36182 cut-off events. [2024-10-13 16:52:00,887 INFO L125 PetriNetUnfolderBase]: For 4317/4421 co-relation queries the response was YES. [2024-10-13 16:52:00,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77137 conditions, 36182 events. 25607/36182 cut-off events. For 4317/4421 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 238531 event pairs, 21719 based on Foata normal form. 0/27440 useless extension candidates. Maximal degree in co-relation 77041. Up to 33596 conditions per place. [2024-10-13 16:52:01,057 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-10-13 16:52:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 519 flow [2024-10-13 16:52:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-13 16:52:01,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-10-13 16:52:01,058 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 383 flow. Second operand 3 states and 119 transitions. [2024-10-13 16:52:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 519 flow [2024-10-13 16:52:01,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 507 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:52:01,061 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 365 flow [2024-10-13 16:52:01,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-13 16:52:01,062 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:52:01,062 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 365 flow [2024-10-13 16:52:01,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:01,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:01,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:01,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:52:01,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:01,264 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:01,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash -153412058, now seen corresponding path program 1 times [2024-10-13 16:52:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512939747] [2024-10-13 16:52:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512939747] [2024-10-13 16:52:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512939747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:52:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111388140] [2024-10-13 16:52:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:01,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:01,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:52:01,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:01,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:01,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:52:01,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:03,097 INFO L124 PetriNetUnfolderBase]: 21041/29923 cut-off events. [2024-10-13 16:52:03,098 INFO L125 PetriNetUnfolderBase]: For 3594/3698 co-relation queries the response was YES. [2024-10-13 16:52:03,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63814 conditions, 29923 events. 21041/29923 cut-off events. For 3594/3698 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 193348 event pairs, 17797 based on Foata normal form. 0/23478 useless extension candidates. Maximal degree in co-relation 63797. Up to 27687 conditions per place. [2024-10-13 16:52:03,249 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 65 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-10-13 16:52:03,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 505 flow [2024-10-13 16:52:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-13 16:52:03,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-10-13 16:52:03,251 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 365 flow. Second operand 3 states and 117 transitions. [2024-10-13 16:52:03,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 505 flow [2024-10-13 16:52:03,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:03,253 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 374 flow [2024-10-13 16:52:03,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2024-10-13 16:52:03,254 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:52:03,254 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 374 flow [2024-10-13 16:52:03,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:03,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:03,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:03,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:52:03,255 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:03,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -153412057, now seen corresponding path program 1 times [2024-10-13 16:52:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514059596] [2024-10-13 16:52:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:03,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514059596] [2024-10-13 16:52:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514059596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:03,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:52:03,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019748484] [2024-10-13 16:52:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:03,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:03,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:03,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:52:03,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:03,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:03,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:52:03,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:04,704 INFO L124 PetriNetUnfolderBase]: 16475/23664 cut-off events. [2024-10-13 16:52:04,705 INFO L125 PetriNetUnfolderBase]: For 2886/2990 co-relation queries the response was YES. [2024-10-13 16:52:04,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 23664 events. 16475/23664 cut-off events. For 2886/2990 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 148809 event pairs, 13875 based on Foata normal form. 0/19518 useless extension candidates. Maximal degree in co-relation 50731. Up to 21850 conditions per place. [2024-10-13 16:52:04,949 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 67 selfloop transitions, 1 changer transitions 2/88 dead transitions. [2024-10-13 16:52:04,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 512 flow [2024-10-13 16:52:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-13 16:52:04,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5021645021645021 [2024-10-13 16:52:04,950 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 374 flow. Second operand 3 states and 116 transitions. [2024-10-13 16:52:04,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 512 flow [2024-10-13 16:52:04,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:04,953 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 356 flow [2024-10-13 16:52:04,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-10-13 16:52:04,953 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:52:04,953 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 356 flow [2024-10-13 16:52:04,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:04,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:04,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:04,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:52:04,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:04,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash -186163765, now seen corresponding path program 1 times [2024-10-13 16:52:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587747486] [2024-10-13 16:52:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587747486] [2024-10-13 16:52:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587747486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:05,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:05,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:52:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101918568] [2024-10-13 16:52:05,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:05,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:52:05,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-10-13 16:52:05,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:05,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:05,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-10-13 16:52:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:07,027 INFO L124 PetriNetUnfolderBase]: 22471/33823 cut-off events. [2024-10-13 16:52:07,027 INFO L125 PetriNetUnfolderBase]: For 3617/3708 co-relation queries the response was YES. [2024-10-13 16:52:07,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69901 conditions, 33823 events. 22471/33823 cut-off events. For 3617/3708 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 244342 event pairs, 9475 based on Foata normal form. 778/26820 useless extension candidates. Maximal degree in co-relation 69883. Up to 16179 conditions per place. [2024-10-13 16:52:07,166 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 121 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-13 16:52:07,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 742 flow [2024-10-13 16:52:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:52:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:52:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-10-13 16:52:07,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-13 16:52:07,167 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 356 flow. Second operand 4 states and 182 transitions. [2024-10-13 16:52:07,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 742 flow [2024-10-13 16:52:07,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:07,170 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 368 flow [2024-10-13 16:52:07,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-10-13 16:52:07,171 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-10-13 16:52:07,171 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 368 flow [2024-10-13 16:52:07,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:07,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:07,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:07,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:52:07,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:07,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:07,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1142760029, now seen corresponding path program 1 times [2024-10-13 16:52:07,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:07,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982325345] [2024-10-13 16:52:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982325345] [2024-10-13 16:52:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982325345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:07,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:07,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:52:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130706974] [2024-10-13 16:52:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:07,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:52:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:52:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:52:07,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:52:07,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:07,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:07,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:52:07,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:08,519 INFO L124 PetriNetUnfolderBase]: 15747/22397 cut-off events. [2024-10-13 16:52:08,519 INFO L125 PetriNetUnfolderBase]: For 5927/6759 co-relation queries the response was YES. [2024-10-13 16:52:08,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53047 conditions, 22397 events. 15747/22397 cut-off events. For 5927/6759 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 133039 event pairs, 6265 based on Foata normal form. 933/19833 useless extension candidates. Maximal degree in co-relation 53028. Up to 18291 conditions per place. [2024-10-13 16:52:08,610 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 81 selfloop transitions, 2 changer transitions 5/105 dead transitions. [2024-10-13 16:52:08,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 595 flow [2024-10-13 16:52:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:52:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:52:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-10-13 16:52:08,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-13 16:52:08,611 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 368 flow. Second operand 3 states and 133 transitions. [2024-10-13 16:52:08,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 595 flow [2024-10-13 16:52:08,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 105 transitions, 589 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:52:08,625 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 377 flow [2024-10-13 16:52:08,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-10-13 16:52:08,626 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-13 16:52:08,626 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 377 flow [2024-10-13 16:52:08,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:08,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:08,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:08,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:52:08,627 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:08,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1476108552, now seen corresponding path program 1 times [2024-10-13 16:52:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:08,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106850673] [2024-10-13 16:52:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:08,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106850673] [2024-10-13 16:52:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106850673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:08,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:08,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:52:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874142390] [2024-10-13 16:52:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:08,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:52:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:52:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:52:08,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 77 [2024-10-13 16:52:08,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:08,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:08,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 77 [2024-10-13 16:52:08,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:10,424 INFO L124 PetriNetUnfolderBase]: 15747/23240 cut-off events. [2024-10-13 16:52:10,424 INFO L125 PetriNetUnfolderBase]: For 7385/8083 co-relation queries the response was YES. [2024-10-13 16:52:10,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52985 conditions, 23240 events. 15747/23240 cut-off events. For 7385/8083 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 150086 event pairs, 4623 based on Foata normal form. 698/20251 useless extension candidates. Maximal degree in co-relation 52964. Up to 10927 conditions per place. [2024-10-13 16:52:10,506 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 118 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-10-13 16:52:10,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 763 flow [2024-10-13 16:52:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:52:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:52:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-10-13 16:52:10,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-10-13 16:52:10,507 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 377 flow. Second operand 5 states and 205 transitions. [2024-10-13 16:52:10,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 763 flow [2024-10-13 16:52:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 753 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 16:52:10,519 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 381 flow [2024-10-13 16:52:10,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-10-13 16:52:10,520 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-13 16:52:10,520 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 381 flow [2024-10-13 16:52:10,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:10,520 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:52:10,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:52:10,520 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:10,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 520320003, now seen corresponding path program 2 times [2024-10-13 16:52:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429714654] [2024-10-13 16:52:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429714654] [2024-10-13 16:52:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429714654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601934482] [2024-10-13 16:52:10,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:52:10,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:10,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:10,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:10,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:52:10,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:52:10,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:10,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:52:10,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:52:10,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:52:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601934482] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:10,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:52:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367293407] [2024-10-13 16:52:10,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:10,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:52:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:52:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:52:10,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-13 16:52:10,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:10,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:10,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-13 16:52:10,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:12,261 INFO L124 PetriNetUnfolderBase]: 15750/22258 cut-off events. [2024-10-13 16:52:12,262 INFO L125 PetriNetUnfolderBase]: For 13062/13774 co-relation queries the response was YES. [2024-10-13 16:52:12,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54092 conditions, 22258 events. 15750/22258 cut-off events. For 13062/13774 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 130534 event pairs, 12494 based on Foata normal form. 692/19087 useless extension candidates. Maximal degree in co-relation 54070. Up to 20668 conditions per place. [2024-10-13 16:52:12,341 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 42 selfloop transitions, 35 changer transitions 0/91 dead transitions. [2024-10-13 16:52:12,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 91 transitions, 564 flow [2024-10-13 16:52:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:52:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:52:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 556 transitions. [2024-10-13 16:52:12,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3008658008658009 [2024-10-13 16:52:12,343 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 381 flow. Second operand 24 states and 556 transitions. [2024-10-13 16:52:12,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 91 transitions, 564 flow [2024-10-13 16:52:12,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 91 transitions, 552 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:52:12,352 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 481 flow [2024-10-13 16:52:12,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-10-13 16:52:12,353 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-10-13 16:52:12,353 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 481 flow [2024-10-13 16:52:12,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:12,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:12,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:52:12,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:52:12,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:12,558 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-13 16:52:12,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1823920165, now seen corresponding path program 1 times [2024-10-13 16:52:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364202016] [2024-10-13 16:52:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:52:12,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:12,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364202016] [2024-10-13 16:52:12,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364202016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:52:12,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:52:12,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:52:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885668138] [2024-10-13 16:52:12,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:52:12,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:52:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:52:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:52:12,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-13 16:52:12,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:12,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-13 16:52:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand