./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:24:45,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:24:45,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:24:45,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:24:45,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:24:45,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:24:45,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:24:45,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:24:45,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:24:45,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:24:45,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:24:45,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:24:45,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:24:45,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:24:45,437 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:24:45,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:24:45,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:24:45,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:24:45,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:24:45,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:24:45,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:24:45,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:24:45,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:24:45,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:24:45,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:24:45,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:24:45,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:24:45,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:24:45,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:24:45,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:24:45,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:24:45,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:24:45,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:24:45,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:24:45,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-10 22:24:45,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:24:45,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:24:45,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:24:45,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:24:45,683 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:24:45,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-10 22:24:47,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:24:47,273 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:24:47,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-10 22:24:47,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe00a2b6d/defbc5812788457f823a4b8eb77bd919/FLAG01602edd1 [2024-11-10 22:24:47,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe00a2b6d/defbc5812788457f823a4b8eb77bd919 [2024-11-10 22:24:47,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:24:47,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:24:47,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:24:47,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:24:47,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:24:47,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64502e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47, skipping insertion in model container [2024-11-10 22:24:47,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:24:47,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:24:47,543 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:24:47,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:24:47,610 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:24:47,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47 WrapperNode [2024-11-10 22:24:47,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:24:47,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:24:47,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:24:47,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:24:47,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,663 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-10 22:24:47,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:24:47,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:24:47,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:24:47,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:24:47,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,716 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 22:24:47,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,730 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:24:47,748 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:24:47,748 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:24:47,748 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:24:47,749 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (1/1) ... [2024-11-10 22:24:47,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:24:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:47,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:24:47,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:24:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:24:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:24:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:24:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:24:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:24:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:24:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:24:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:24:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:24:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:24:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:24:47,833 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:24:47,930 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:24:47,932 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:24:48,277 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:24:48,277 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:24:48,579 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:24:48,579 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:24:48,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:48 BoogieIcfgContainer [2024-11-10 22:24:48,580 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:24:48,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:24:48,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:24:48,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:24:48,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:24:47" (1/3) ... [2024-11-10 22:24:48,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3437d646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:48, skipping insertion in model container [2024-11-10 22:24:48,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:47" (2/3) ... [2024-11-10 22:24:48,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3437d646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:48, skipping insertion in model container [2024-11-10 22:24:48,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:48" (3/3) ... [2024-11-10 22:24:48,590 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-10 22:24:48,605 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:24:48,605 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-10 22:24:48,605 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:24:48,709 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:24:48,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 96 transitions, 213 flow [2024-11-10 22:24:48,772 INFO L124 PetriNetUnfolderBase]: 20/93 cut-off events. [2024-11-10 22:24:48,773 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:24:48,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 20/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-10 22:24:48,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 96 transitions, 213 flow [2024-11-10 22:24:48,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 91 transitions, 197 flow [2024-11-10 22:24:48,793 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:24:48,798 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;@6805192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:24:48,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-10 22:24:48,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:24:48,802 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:24:48,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:24:48,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:48,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:24:48,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:48,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 29713739, now seen corresponding path program 1 times [2024-11-10 22:24:48,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:48,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238048256] [2024-11-10 22:24:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:48,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238048256] [2024-11-10 22:24:49,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238048256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:49,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:49,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788879698] [2024-11-10 22:24:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:49,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-10 22:24:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:49,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-10 22:24:49,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:49,766 INFO L124 PetriNetUnfolderBase]: 3370/4969 cut-off events. [2024-11-10 22:24:49,766 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-10 22:24:49,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9491 conditions, 4969 events. 3370/4969 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27878 event pairs, 2182 based on Foata normal form. 9/3120 useless extension candidates. Maximal degree in co-relation 9006. Up to 4308 conditions per place. [2024-11-10 22:24:49,848 INFO L140 encePairwiseOnDemand]: 66/96 looper letters, 51 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-10 22:24:49,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 309 flow [2024-11-10 22:24:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-10 22:24:49,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-10 22:24:49,870 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 197 flow. Second operand 4 states and 196 transitions. [2024-11-10 22:24:49,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 309 flow [2024-11-10 22:24:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 300 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:24:49,878 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 248 flow [2024-11-10 22:24:49,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2024-11-10 22:24:49,882 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2024-11-10 22:24:49,882 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 248 flow [2024-11-10 22:24:49,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:49,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:49,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:24:49,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:24:49,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:49,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 743261125, now seen corresponding path program 1 times [2024-11-10 22:24:49,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:49,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040554286] [2024-11-10 22:24:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:49,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040554286] [2024-11-10 22:24:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040554286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768057348] [2024-11-10 22:24:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:49,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:49,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:49,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:49,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:24:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:50,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:50,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:50,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768057348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:50,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:50,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:24:50,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524661262] [2024-11-10 22:24:50,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:50,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:50,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:50,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:24:50,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-10 22:24:50,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:50,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:50,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-10 22:24:50,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:50,613 INFO L124 PetriNetUnfolderBase]: 3370/4966 cut-off events. [2024-11-10 22:24:50,614 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-10 22:24:50,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9451 conditions, 4966 events. 3370/4966 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27795 event pairs, 2182 based on Foata normal form. 3/3111 useless extension candidates. Maximal degree in co-relation 9372. Up to 4293 conditions per place. [2024-11-10 22:24:50,640 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 41 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-11-10 22:24:50,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 352 flow [2024-11-10 22:24:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-11-10 22:24:50,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3975694444444444 [2024-11-10 22:24:50,643 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 248 flow. Second operand 6 states and 229 transitions. [2024-11-10 22:24:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 352 flow [2024-11-10 22:24:50,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:24:50,645 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 270 flow [2024-11-10 22:24:50,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-11-10 22:24:50,646 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-11-10 22:24:50,646 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 270 flow [2024-11-10 22:24:50,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:50,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:50,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:24:50,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:24:50,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:50,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:50,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1566259283, now seen corresponding path program 1 times [2024-11-10 22:24:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:50,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244654882] [2024-11-10 22:24:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:51,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244654882] [2024-11-10 22:24:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244654882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614753270] [2024-11-10 22:24:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:51,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:51,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:24:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:51,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:51,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:51,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614753270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:51,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:24:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943788653] [2024-11-10 22:24:51,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:51,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:51,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:51,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-11-10 22:24:51,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:51,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:51,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-11-10 22:24:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:51,911 INFO L124 PetriNetUnfolderBase]: 3379/5020 cut-off events. [2024-11-10 22:24:51,912 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-10 22:24:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 5020 events. 3379/5020 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 28398 event pairs, 2182 based on Foata normal form. 9/3174 useless extension candidates. Maximal degree in co-relation 9374. Up to 4308 conditions per place. [2024-11-10 22:24:51,949 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 48 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-11-10 22:24:51,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 614 flow [2024-11-10 22:24:51,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 374 transitions. [2024-11-10 22:24:51,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38958333333333334 [2024-11-10 22:24:51,951 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 270 flow. Second operand 10 states and 374 transitions. [2024-11-10 22:24:51,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 614 flow [2024-11-10 22:24:51,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 531 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:24:51,957 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 485 flow [2024-11-10 22:24:51,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2024-11-10 22:24:51,958 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-10 22:24:51,958 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 485 flow [2024-11-10 22:24:51,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:51,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:51,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:51,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:24:52,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:24:52,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:52,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash -338249183, now seen corresponding path program 1 times [2024-11-10 22:24:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200099532] [2024-11-10 22:24:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:52,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200099532] [2024-11-10 22:24:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200099532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:52,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:52,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:24:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437843058] [2024-11-10 22:24:52,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:52,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:52,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:24:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:52,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:52,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:24:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:52,956 INFO L124 PetriNetUnfolderBase]: 5838/8657 cut-off events. [2024-11-10 22:24:52,956 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-11-10 22:24:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16543 conditions, 8657 events. 5838/8657 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 51928 event pairs, 1884 based on Foata normal form. 214/5807 useless extension candidates. Maximal degree in co-relation 16439. Up to 4473 conditions per place. [2024-11-10 22:24:53,000 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 108 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-10 22:24:53,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 139 transitions, 769 flow [2024-11-10 22:24:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-10 22:24:53,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-11-10 22:24:53,003 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 485 flow. Second operand 3 states and 181 transitions. [2024-11-10 22:24:53,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 139 transitions, 769 flow [2024-11-10 22:24:53,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 732 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:53,010 INFO L231 Difference]: Finished difference. Result has 84 places, 112 transitions, 473 flow [2024-11-10 22:24:53,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=84, PETRI_TRANSITIONS=112} [2024-11-10 22:24:53,011 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-11-10 22:24:53,012 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 112 transitions, 473 flow [2024-11-10 22:24:53,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:53,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:53,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:53,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:24:53,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:53,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1895788083, now seen corresponding path program 1 times [2024-11-10 22:24:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140973368] [2024-11-10 22:24:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:53,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140973368] [2024-11-10 22:24:53,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140973368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:53,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:53,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356376414] [2024-11-10 22:24:53,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:53,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:53,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:53,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-10 22:24:53,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 112 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:53,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:53,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-10 22:24:53,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:54,119 INFO L124 PetriNetUnfolderBase]: 8495/12372 cut-off events. [2024-11-10 22:24:54,120 INFO L125 PetriNetUnfolderBase]: For 1070/1082 co-relation queries the response was YES. [2024-11-10 22:24:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25482 conditions, 12372 events. 8495/12372 cut-off events. For 1070/1082 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 70150 event pairs, 3181 based on Foata normal form. 0/9382 useless extension candidates. Maximal degree in co-relation 25381. Up to 5816 conditions per place. [2024-11-10 22:24:54,174 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2024-11-10 22:24:54,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 763 flow [2024-11-10 22:24:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-10 22:24:54,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-10 22:24:54,180 INFO L175 Difference]: Start difference. First operand has 84 places, 112 transitions, 473 flow. Second operand 3 states and 165 transitions. [2024-11-10 22:24:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 763 flow [2024-11-10 22:24:54,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 760 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:54,186 INFO L231 Difference]: Finished difference. Result has 87 places, 113 transitions, 492 flow [2024-11-10 22:24:54,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=87, PETRI_TRANSITIONS=113} [2024-11-10 22:24:54,186 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2024-11-10 22:24:54,187 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 113 transitions, 492 flow [2024-11-10 22:24:54,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:54,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:54,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:54,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:24:54,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:54,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash 635763187, now seen corresponding path program 1 times [2024-11-10 22:24:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086601507] [2024-11-10 22:24:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086601507] [2024-11-10 22:24:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086601507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:54,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521914732] [2024-11-10 22:24:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:54,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:54,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:24:54,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:54,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:54,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:24:54,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:55,276 INFO L124 PetriNetUnfolderBase]: 10419/15941 cut-off events. [2024-11-10 22:24:55,277 INFO L125 PetriNetUnfolderBase]: For 3360/3468 co-relation queries the response was YES. [2024-11-10 22:24:55,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33918 conditions, 15941 events. 10419/15941 cut-off events. For 3360/3468 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 99341 event pairs, 4177 based on Foata normal form. 315/12577 useless extension candidates. Maximal degree in co-relation 33816. Up to 7196 conditions per place. [2024-11-10 22:24:55,349 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 113 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-10 22:24:55,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 808 flow [2024-11-10 22:24:55,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-11-10 22:24:55,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6284722222222222 [2024-11-10 22:24:55,350 INFO L175 Difference]: Start difference. First operand has 87 places, 113 transitions, 492 flow. Second operand 3 states and 181 transitions. [2024-11-10 22:24:55,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 808 flow [2024-11-10 22:24:55,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 796 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:55,356 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 498 flow [2024-11-10 22:24:55,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2024-11-10 22:24:55,357 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-11-10 22:24:55,357 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 498 flow [2024-11-10 22:24:55,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:55,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:55,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:55,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:24:55,358 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:55,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1766175660, now seen corresponding path program 1 times [2024-11-10 22:24:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:55,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284709056] [2024-11-10 22:24:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:55,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284709056] [2024-11-10 22:24:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284709056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584852882] [2024-11-10 22:24:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:55,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:55,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-10 22:24:55,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:55,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:55,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-10 22:24:55,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:56,862 INFO L124 PetriNetUnfolderBase]: 14063/20672 cut-off events. [2024-11-10 22:24:56,862 INFO L125 PetriNetUnfolderBase]: For 3324/3548 co-relation queries the response was YES. [2024-11-10 22:24:56,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43514 conditions, 20672 events. 14063/20672 cut-off events. For 3324/3548 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 124314 event pairs, 6937 based on Foata normal form. 0/16033 useless extension candidates. Maximal degree in co-relation 43411. Up to 12185 conditions per place. [2024-11-10 22:24:56,992 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-11-10 22:24:56,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 798 flow [2024-11-10 22:24:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-10 22:24:56,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-10 22:24:56,994 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 498 flow. Second operand 3 states and 171 transitions. [2024-11-10 22:24:56,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 798 flow [2024-11-10 22:24:56,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 141 transitions, 796 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:56,999 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 514 flow [2024-11-10 22:24:57,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-11-10 22:24:57,000 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-11-10 22:24:57,000 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 514 flow [2024-11-10 22:24:57,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:57,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:57,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:24:57,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:57,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash -147616319, now seen corresponding path program 1 times [2024-11-10 22:24:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132280119] [2024-11-10 22:24:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:57,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:57,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132280119] [2024-11-10 22:24:57,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132280119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494600744] [2024-11-10 22:24:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:57,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:57,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:57,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-10 22:24:57,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:57,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:57,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-10 22:24:57,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:58,289 INFO L124 PetriNetUnfolderBase]: 12513/19201 cut-off events. [2024-11-10 22:24:58,290 INFO L125 PetriNetUnfolderBase]: For 6240/6632 co-relation queries the response was YES. [2024-11-10 22:24:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41763 conditions, 19201 events. 12513/19201 cut-off events. For 6240/6632 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 120014 event pairs, 9361 based on Foata normal form. 112/15053 useless extension candidates. Maximal degree in co-relation 41593. Up to 15262 conditions per place. [2024-11-10 22:24:58,432 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 136 selfloop transitions, 4 changer transitions 2/169 dead transitions. [2024-11-10 22:24:58,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1043 flow [2024-11-10 22:24:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:24:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:24:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-11-10 22:24:58,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 22:24:58,434 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 514 flow. Second operand 5 states and 240 transitions. [2024-11-10 22:24:58,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1043 flow [2024-11-10 22:24:58,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:24:58,444 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 526 flow [2024-11-10 22:24:58,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2024-11-10 22:24:58,445 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2024-11-10 22:24:58,445 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 526 flow [2024-11-10 22:24:58,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:58,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:58,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:58,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:24:58,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:24:58,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash -281136555, now seen corresponding path program 1 times [2024-11-10 22:24:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995734190] [2024-11-10 22:24:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995734190] [2024-11-10 22:24:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995734190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710045588] [2024-11-10 22:24:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:58,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:58,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-10 22:24:58,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:58,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:58,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-10 22:24:58,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:01,086 INFO L124 PetriNetUnfolderBase]: 23803/34749 cut-off events. [2024-11-10 22:25:01,086 INFO L125 PetriNetUnfolderBase]: For 9597/10411 co-relation queries the response was YES. [2024-11-10 22:25:01,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76651 conditions, 34749 events. 23803/34749 cut-off events. For 9597/10411 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 216584 event pairs, 13589 based on Foata normal form. 0/26724 useless extension candidates. Maximal degree in co-relation 76483. Up to 16287 conditions per place. [2024-11-10 22:25:01,439 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 111 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2024-11-10 22:25:01,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 144 transitions, 844 flow [2024-11-10 22:25:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-10 22:25:01,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-10 22:25:01,440 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 526 flow. Second operand 3 states and 171 transitions. [2024-11-10 22:25:01,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 144 transitions, 844 flow [2024-11-10 22:25:01,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 144 transitions, 840 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:01,451 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 548 flow [2024-11-10 22:25:01,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2024-11-10 22:25:01,452 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2024-11-10 22:25:01,452 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 548 flow [2024-11-10 22:25:01,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:01,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:01,452 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:25:01,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:25:01,452 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:01,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1928193883, now seen corresponding path program 2 times [2024-11-10 22:25:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987666444] [2024-11-10 22:25:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987666444] [2024-11-10 22:25:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987666444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420566851] [2024-11-10 22:25:01,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:01,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:01,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:01,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:25:01,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:01,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:01,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:01,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:01,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420566851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:01,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:25:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091709481] [2024-11-10 22:25:01,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:01,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:25:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:25:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:01,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 96 [2024-11-10 22:25:01,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 548 flow. Second operand has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:01,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:01,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 96 [2024-11-10 22:25:01,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:04,377 INFO L124 PetriNetUnfolderBase]: 18820/28946 cut-off events. [2024-11-10 22:25:04,378 INFO L125 PetriNetUnfolderBase]: For 12863/13981 co-relation queries the response was YES. [2024-11-10 22:25:04,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65428 conditions, 28946 events. 18820/28946 cut-off events. For 12863/13981 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 197145 event pairs, 15031 based on Foata normal form. 10/23033 useless extension candidates. Maximal degree in co-relation 65195. Up to 24912 conditions per place. [2024-11-10 22:25:04,586 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 56 selfloop transitions, 53 changer transitions 2/136 dead transitions. [2024-11-10 22:25:04,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 136 transitions, 835 flow [2024-11-10 22:25:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 465 transitions. [2024-11-10 22:25:04,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34598214285714285 [2024-11-10 22:25:04,589 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 548 flow. Second operand 14 states and 465 transitions. [2024-11-10 22:25:04,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 136 transitions, 835 flow [2024-11-10 22:25:04,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 789 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-10 22:25:04,601 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 627 flow [2024-11-10 22:25:04,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=627, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-11-10 22:25:04,601 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2024-11-10 22:25:04,602 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 627 flow [2024-11-10 22:25:04,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:04,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:04,602 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:04,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:04,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:04,808 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:04,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1950897145, now seen corresponding path program 1 times [2024-11-10 22:25:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747682834] [2024-11-10 22:25:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747682834] [2024-11-10 22:25:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747682834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016916388] [2024-11-10 22:25:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:04,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:04,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:25:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:05,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:05,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:05,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016916388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:05,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:25:05,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638000263] [2024-11-10 22:25:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:05,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:05,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:05,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:25:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:25:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:06,577 INFO L124 PetriNetUnfolderBase]: 13827/21515 cut-off events. [2024-11-10 22:25:06,578 INFO L125 PetriNetUnfolderBase]: For 7786/8698 co-relation queries the response was YES. [2024-11-10 22:25:06,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46917 conditions, 21515 events. 13827/21515 cut-off events. For 7786/8698 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 143204 event pairs, 10758 based on Foata normal form. 1221/18184 useless extension candidates. Maximal degree in co-relation 46793. Up to 18130 conditions per place. [2024-11-10 22:25:06,886 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 87 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2024-11-10 22:25:06,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 116 transitions, 789 flow [2024-11-10 22:25:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-10 22:25:06,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-11-10 22:25:06,887 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 627 flow. Second operand 3 states and 148 transitions. [2024-11-10 22:25:06,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 116 transitions, 789 flow [2024-11-10 22:25:06,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 116 transitions, 596 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-11-10 22:25:06,896 INFO L231 Difference]: Finished difference. Result has 85 places, 116 transitions, 422 flow [2024-11-10 22:25:06,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=85, PETRI_TRANSITIONS=116} [2024-11-10 22:25:06,897 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2024-11-10 22:25:06,897 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 116 transitions, 422 flow [2024-11-10 22:25:06,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:06,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:06,897 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:06,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:07,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:07,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:07,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash -152485080, now seen corresponding path program 1 times [2024-11-10 22:25:07,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329669756] [2024-11-10 22:25:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:25:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329669756] [2024-11-10 22:25:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329669756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575153291] [2024-11-10 22:25:07,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:07,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:07,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:25:07,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 116 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:07,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:07,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:25:07,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:08,733 INFO L124 PetriNetUnfolderBase]: 18123/27273 cut-off events. [2024-11-10 22:25:08,733 INFO L125 PetriNetUnfolderBase]: For 10869/12687 co-relation queries the response was YES. [2024-11-10 22:25:08,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61188 conditions, 27273 events. 18123/27273 cut-off events. For 10869/12687 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 170916 event pairs, 6045 based on Foata normal form. 566/22740 useless extension candidates. Maximal degree in co-relation 61168. Up to 17545 conditions per place. [2024-11-10 22:25:08,896 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 112 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-10 22:25:08,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 142 transitions, 730 flow [2024-11-10 22:25:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-10 22:25:08,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-10 22:25:08,898 INFO L175 Difference]: Start difference. First operand has 85 places, 116 transitions, 422 flow. Second operand 3 states and 171 transitions. [2024-11-10 22:25:08,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 142 transitions, 730 flow [2024-11-10 22:25:08,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 142 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:08,907 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 437 flow [2024-11-10 22:25:08,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2024-11-10 22:25:08,910 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2024-11-10 22:25:08,910 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 437 flow [2024-11-10 22:25:08,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:08,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:08,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:08,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:25:08,911 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:08,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1397806897, now seen corresponding path program 1 times [2024-11-10 22:25:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:08,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312545677] [2024-11-10 22:25:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:25:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312545677] [2024-11-10 22:25:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312545677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777434559] [2024-11-10 22:25:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:09,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:09,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-10 22:25:09,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:09,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:09,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-10 22:25:09,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:11,811 INFO L124 PetriNetUnfolderBase]: 23696/36251 cut-off events. [2024-11-10 22:25:11,811 INFO L125 PetriNetUnfolderBase]: For 15633/17680 co-relation queries the response was YES. [2024-11-10 22:25:11,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82295 conditions, 36251 events. 23696/36251 cut-off events. For 15633/17680 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 241828 event pairs, 18637 based on Foata normal form. 320/29545 useless extension candidates. Maximal degree in co-relation 82273. Up to 24060 conditions per place. [2024-11-10 22:25:12,041 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 106 selfloop transitions, 17 changer transitions 0/148 dead transitions. [2024-11-10 22:25:12,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 780 flow [2024-11-10 22:25:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-11-10 22:25:12,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-11-10 22:25:12,043 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 437 flow. Second operand 5 states and 239 transitions. [2024-11-10 22:25:12,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 780 flow [2024-11-10 22:25:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:12,052 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 498 flow [2024-11-10 22:25:12,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-11-10 22:25:12,052 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2024-11-10 22:25:12,052 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 498 flow [2024-11-10 22:25:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:12,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:12,053 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:12,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:25:12,053 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:12,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash -822574196, now seen corresponding path program 1 times [2024-11-10 22:25:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:12,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728338201] [2024-11-10 22:25:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:12,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728338201] [2024-11-10 22:25:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728338201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:12,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961663786] [2024-11-10 22:25:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:12,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-10 22:25:12,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:12,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:12,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-10 22:25:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:15,033 INFO L124 PetriNetUnfolderBase]: 26994/38911 cut-off events. [2024-11-10 22:25:15,033 INFO L125 PetriNetUnfolderBase]: For 17791/19954 co-relation queries the response was YES. [2024-11-10 22:25:15,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91773 conditions, 38911 events. 26994/38911 cut-off events. For 17791/19954 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 225474 event pairs, 14081 based on Foata normal form. 452/33541 useless extension candidates. Maximal degree in co-relation 91748. Up to 24075 conditions per place. [2024-11-10 22:25:15,258 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 112 selfloop transitions, 4 changer transitions 2/140 dead transitions. [2024-11-10 22:25:15,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 798 flow [2024-11-10 22:25:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-10 22:25:15,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-11-10 22:25:15,259 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 498 flow. Second operand 3 states and 158 transitions. [2024-11-10 22:25:15,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 798 flow [2024-11-10 22:25:15,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 779 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:15,268 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 492 flow [2024-11-10 22:25:15,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-11-10 22:25:15,269 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-10 22:25:15,269 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 492 flow [2024-11-10 22:25:15,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:15,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:15,269 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:15,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:25:15,270 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:15,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1154819965, now seen corresponding path program 1 times [2024-11-10 22:25:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965820578] [2024-11-10 22:25:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:25:15,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965820578] [2024-11-10 22:25:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965820578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730949240] [2024-11-10 22:25:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:15,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:25:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:15,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:15,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 22:25:15,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:15,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730949240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:15,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:15,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-10 22:25:15,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715280358] [2024-11-10 22:25:15,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:15,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:15,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:15,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:15,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:15,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:25:15,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:15,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:15,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:25:15,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:17,755 INFO L124 PetriNetUnfolderBase]: 16302/24786 cut-off events. [2024-11-10 22:25:17,755 INFO L125 PetriNetUnfolderBase]: For 17133/18926 co-relation queries the response was YES. [2024-11-10 22:25:17,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58736 conditions, 24786 events. 16302/24786 cut-off events. For 17133/18926 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 154877 event pairs, 12973 based on Foata normal form. 1360/21620 useless extension candidates. Maximal degree in co-relation 58711. Up to 21780 conditions per place. [2024-11-10 22:25:17,922 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 85 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-10 22:25:17,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 656 flow [2024-11-10 22:25:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-10 22:25:17,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 22:25:17,923 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 492 flow. Second operand 3 states and 144 transitions. [2024-11-10 22:25:17,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 656 flow [2024-11-10 22:25:17,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 634 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:17,933 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 464 flow [2024-11-10 22:25:17,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-11-10 22:25:17,934 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-11-10 22:25:17,934 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 464 flow [2024-11-10 22:25:17,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:17,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:17,935 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:17,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:18,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:25:18,135 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:18,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1486418709, now seen corresponding path program 1 times [2024-11-10 22:25:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:18,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861823410] [2024-11-10 22:25:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:18,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 22:25:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861823410] [2024-11-10 22:25:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861823410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381563861] [2024-11-10 22:25:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:18,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:18,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 96 [2024-11-10 22:25:18,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:18,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:18,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 96 [2024-11-10 22:25:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:21,108 INFO L124 PetriNetUnfolderBase]: 25852/37695 cut-off events. [2024-11-10 22:25:21,109 INFO L125 PetriNetUnfolderBase]: For 20409/23197 co-relation queries the response was YES. [2024-11-10 22:25:21,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89781 conditions, 37695 events. 25852/37695 cut-off events. For 20409/23197 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 220837 event pairs, 16025 based on Foata normal form. 640/32514 useless extension candidates. Maximal degree in co-relation 89756. Up to 27166 conditions per place. [2024-11-10 22:25:21,628 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 110 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-10 22:25:21,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 754 flow [2024-11-10 22:25:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-10 22:25:21,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 22:25:21,629 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 464 flow. Second operand 3 states and 156 transitions. [2024-11-10 22:25:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 136 transitions, 754 flow [2024-11-10 22:25:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 753 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:21,647 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 489 flow [2024-11-10 22:25:21,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-11-10 22:25:21,647 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2024-11-10 22:25:21,648 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 489 flow [2024-11-10 22:25:21,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:21,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:21,648 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:21,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:25:21,648 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:21,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1038266211, now seen corresponding path program 1 times [2024-11-10 22:25:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056831020] [2024-11-10 22:25:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 22:25:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:21,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056831020] [2024-11-10 22:25:21,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056831020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:21,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:21,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:21,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488458245] [2024-11-10 22:25:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:21,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:21,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:21,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:21,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:21,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-10 22:25:21,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:21,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:21,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-10 22:25:21,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:25,105 INFO L124 PetriNetUnfolderBase]: 27360/42201 cut-off events. [2024-11-10 22:25:25,106 INFO L125 PetriNetUnfolderBase]: For 25779/28677 co-relation queries the response was YES. [2024-11-10 22:25:25,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99487 conditions, 42201 events. 27360/42201 cut-off events. For 25779/28677 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 276142 event pairs, 22206 based on Foata normal form. 120/34686 useless extension candidates. Maximal degree in co-relation 99461. Up to 27883 conditions per place. [2024-11-10 22:25:25,423 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 81 selfloop transitions, 7 changer transitions 48/163 dead transitions. [2024-11-10 22:25:25,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 938 flow [2024-11-10 22:25:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-10 22:25:25,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-11-10 22:25:25,425 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 489 flow. Second operand 5 states and 234 transitions. [2024-11-10 22:25:25,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 938 flow [2024-11-10 22:25:25,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 163 transitions, 924 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:25,444 INFO L231 Difference]: Finished difference. Result has 98 places, 115 transitions, 508 flow [2024-11-10 22:25:25,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=98, PETRI_TRANSITIONS=115} [2024-11-10 22:25:25,444 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2024-11-10 22:25:25,444 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 115 transitions, 508 flow [2024-11-10 22:25:25,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:25,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:25,445 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:25,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:25:25,445 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:25,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1658206775, now seen corresponding path program 1 times [2024-11-10 22:25:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113822535] [2024-11-10 22:25:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 22:25:25,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:25,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113822535] [2024-11-10 22:25:25,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113822535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:25,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750055793] [2024-11-10 22:25:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:25,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:25,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:25,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:25,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:25:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:25,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:25,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 22:25:25,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:25,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750055793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:25,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:25,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-11-10 22:25:25,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222015993] [2024-11-10 22:25:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:25,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:25,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:25,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-10 22:25:25,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:25,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:25,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-10 22:25:25,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand