./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:56:31,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:56:31,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:56:31,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:56:31,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:56:31,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:56:31,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:56:31,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:56:31,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:56:31,672 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:56:31,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:56:31,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:56:31,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:56:31,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:56:31,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:56:31,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:56:31,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:56:31,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:56:31,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:56:31,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:56:31,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:56:31,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:56:31,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:56:31,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:56:31,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:56:31,683 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:56:31,683 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:56:31,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:56:31,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:56:31,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:56:31,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:56:31,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:56:31,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:56:31,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:56:31,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:31,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:56:31,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:56:31,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:56:31,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:56:31,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:56:31,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:56:31,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:56:31,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:56:31,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:56:31,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-17 07:56:31,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:56:31,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:56:31,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:56:31,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:56:31,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:56:31,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-17 07:56:33,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:56:33,728 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:56:33,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-17 07:56:33,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c142e04/f6a084deb1c44d0b986c2003782606b7/FLAGf029e4daf [2024-11-17 07:56:33,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c142e04/f6a084deb1c44d0b986c2003782606b7 [2024-11-17 07:56:33,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:56:33,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:56:33,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:33,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:56:33,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:56:33,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:33" (1/1) ... [2024-11-17 07:56:33,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee9b0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:33, skipping insertion in model container [2024-11-17 07:56:33,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:56:33" (1/1) ... [2024-11-17 07:56:33,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:56:34,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:34,065 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:56:34,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:56:34,111 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:56:34,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34 WrapperNode [2024-11-17 07:56:34,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:56:34,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:34,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:56:34,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:56:34,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,172 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 269 [2024-11-17 07:56:34,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:56:34,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:56:34,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:56:34,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:56:34,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,231 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-17 07:56:34,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,243 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:56:34,266 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:56:34,266 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:56:34,267 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:56:34,268 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (1/1) ... [2024-11-17 07:56:34,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:56:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:34,305 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) [2024-11-17 07:56:34,308 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 [2024-11-17 07:56:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:56:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:56:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:56:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:56:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:56:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:56:34,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:56:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:56:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:56:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:56:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:56:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:56:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:56:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:56:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:56:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:56:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:56:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:56:34,364 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:56:34,514 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:56:34,517 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:56:34,994 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:56:34,994 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:56:35,349 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:56:35,349 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:56:35,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:35 BoogieIcfgContainer [2024-11-17 07:56:35,351 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:56:35,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:56:35,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:56:35,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:56:35,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:56:33" (1/3) ... [2024-11-17 07:56:35,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf8ec6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:35, skipping insertion in model container [2024-11-17 07:56:35,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:56:34" (2/3) ... [2024-11-17 07:56:35,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf8ec6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:56:35, skipping insertion in model container [2024-11-17 07:56:35,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:56:35" (3/3) ... [2024-11-17 07:56:35,363 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-17 07:56:35,382 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:56:35,382 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-17 07:56:35,382 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:56:35,453 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:56:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 187 flow [2024-11-17 07:56:35,539 INFO L124 PetriNetUnfolderBase]: 12/80 cut-off events. [2024-11-17 07:56:35,540 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:56:35,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 12/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 236 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2024-11-17 07:56:35,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 187 flow [2024-11-17 07:56:35,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 78 transitions, 171 flow [2024-11-17 07:56:35,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:56:35,571 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;@13249264, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:56:35,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-17 07:56:35,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:56:35,575 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:56:35,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:56:35,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:35,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:56:35,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:35,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 22455067, now seen corresponding path program 1 times [2024-11-17 07:56:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:35,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292419170] [2024-11-17 07:56:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292419170] [2024-11-17 07:56:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292419170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:35,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121418560] [2024-11-17 07:56:35,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:35,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:35,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-17 07:56:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-17 07:56:35,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:35,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-17 07:56:35,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:36,655 INFO L124 PetriNetUnfolderBase]: 2204/4137 cut-off events. [2024-11-17 07:56:36,657 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-17 07:56:36,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 4137 events. 2204/4137 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31470 event pairs, 1926 based on Foata normal form. 616/3614 useless extension candidates. Maximal degree in co-relation 6974. Up to 3019 conditions per place. [2024-11-17 07:56:36,703 INFO L140 encePairwiseOnDemand]: 60/83 looper letters, 38 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-17 07:56:36,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 249 flow [2024-11-17 07:56:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-17 07:56:36,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512048192771084 [2024-11-17 07:56:36,720 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 171 flow. Second operand 4 states and 183 transitions. [2024-11-17 07:56:36,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 249 flow [2024-11-17 07:56:36,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:56:36,734 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 198 flow [2024-11-17 07:56:36,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-17 07:56:36,741 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-17 07:56:36,741 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 198 flow [2024-11-17 07:56:36,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-17 07:56:36,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:36,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:56:36,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:56:36,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:36,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1643480532, now seen corresponding path program 1 times [2024-11-17 07:56:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438450692] [2024-11-17 07:56:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:36,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:36,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438450692] [2024-11-17 07:56:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438450692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:36,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337434088] [2024-11-17 07:56:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:36,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:36,938 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) [2024-11-17 07:56:36,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:56:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:37,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:37,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:37,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337434088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:37,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:37,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:56:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515213170] [2024-11-17 07:56:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:37,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:56:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:56:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:56:37,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-17 07:56:37,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-17 07:56:37,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:37,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-17 07:56:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:37,735 INFO L124 PetriNetUnfolderBase]: 2204/4135 cut-off events. [2024-11-17 07:56:37,736 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-17 07:56:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 4135 events. 2204/4135 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31443 event pairs, 1926 based on Foata normal form. 2/2998 useless extension candidates. Maximal degree in co-relation 7266. Up to 3009 conditions per place. [2024-11-17 07:56:37,772 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 31 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-17 07:56:37,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 276 flow [2024-11-17 07:56:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:56:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:56:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-17 07:56:37,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45180722891566266 [2024-11-17 07:56:37,778 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 198 flow. Second operand 6 states and 225 transitions. [2024-11-17 07:56:37,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 276 flow [2024-11-17 07:56:37,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:56:37,782 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 214 flow [2024-11-17 07:56:37,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-17 07:56:37,783 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-17 07:56:37,783 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 214 flow [2024-11-17 07:56:37,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-17 07:56:37,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:37,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:56:37,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:37,985 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 [2024-11-17 07:56:37,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:37,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash -591710423, now seen corresponding path program 1 times [2024-11-17 07:56:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222008266] [2024-11-17 07:56:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:38,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222008266] [2024-11-17 07:56:38,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222008266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593496134] [2024-11-17 07:56:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:38,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:38,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:38,114 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) [2024-11-17 07:56:38,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:56:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:38,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:38,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:38,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593496134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:38,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:56:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115819466] [2024-11-17 07:56:38,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:38,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:38,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-17 07:56:38,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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) [2024-11-17 07:56:38,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:38,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-17 07:56:38,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:38,901 INFO L124 PetriNetUnfolderBase]: 2210/4171 cut-off events. [2024-11-17 07:56:38,901 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-17 07:56:38,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 4171 events. 2210/4171 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 31872 event pairs, 1926 based on Foata normal form. 6/3040 useless extension candidates. Maximal degree in co-relation 7268. Up to 3020 conditions per place. [2024-11-17 07:56:38,934 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 36 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-11-17 07:56:38,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 450 flow [2024-11-17 07:56:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:56:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:56:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 367 transitions. [2024-11-17 07:56:38,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44216867469879517 [2024-11-17 07:56:38,938 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 214 flow. Second operand 10 states and 367 transitions. [2024-11-17 07:56:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 450 flow [2024-11-17 07:56:38,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 392 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-17 07:56:38,948 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 354 flow [2024-11-17 07:56:38,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-17 07:56:38,952 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2024-11-17 07:56:38,952 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 354 flow [2024-11-17 07:56:38,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 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) [2024-11-17 07:56:38,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:38,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:38,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:39,158 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 [2024-11-17 07:56:39,159 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:39,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1243604470, now seen corresponding path program 1 times [2024-11-17 07:56:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159881123] [2024-11-17 07:56:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:39,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:39,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159881123] [2024-11-17 07:56:39,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159881123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:39,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:39,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:39,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117713156] [2024-11-17 07:56:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:39,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:39,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:39,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-17 07:56:39,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-17 07:56:39,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:39,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-17 07:56:39,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:39,851 INFO L124 PetriNetUnfolderBase]: 2305/4333 cut-off events. [2024-11-17 07:56:39,852 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-17 07:56:39,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 4333 events. 2305/4333 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31959 event pairs, 2001 based on Foata normal form. 74/3334 useless extension candidates. Maximal degree in co-relation 7707. Up to 3044 conditions per place. [2024-11-17 07:56:39,888 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 86 selfloop transitions, 4 changer transitions 1/118 dead transitions. [2024-11-17 07:56:39,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 118 transitions, 673 flow [2024-11-17 07:56:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-17 07:56:39,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5397590361445783 [2024-11-17 07:56:39,890 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 354 flow. Second operand 5 states and 224 transitions. [2024-11-17 07:56:39,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 118 transitions, 673 flow [2024-11-17 07:56:39,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 639 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:39,898 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-11-17 07:56:39,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-11-17 07:56:39,900 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-11-17 07:56:39,900 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-11-17 07:56:39,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-17 07:56:39,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:39,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:39,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:56:39,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:39,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash 670118851, now seen corresponding path program 1 times [2024-11-17 07:56:39,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202392805] [2024-11-17 07:56:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:39,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:40,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:40,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202392805] [2024-11-17 07:56:40,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202392805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291973195] [2024-11-17 07:56:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:40,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:40,077 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) [2024-11-17 07:56:40,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:56:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:40,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:40,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:40,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291973195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:40,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 07:56:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713340544] [2024-11-17 07:56:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:40,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:56:40,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-17 07:56:40,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 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) [2024-11-17 07:56:40,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:40,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-17 07:56:40,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:40,574 INFO L124 PetriNetUnfolderBase]: 1554/3042 cut-off events. [2024-11-17 07:56:40,574 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2024-11-17 07:56:40,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 3042 events. 1554/3042 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20899 event pairs, 1324 based on Foata normal form. 0/2484 useless extension candidates. Maximal degree in co-relation 5635. Up to 2178 conditions per place. [2024-11-17 07:56:40,598 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 55 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-17 07:56:40,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 458 flow [2024-11-17 07:56:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-17 07:56:40,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5502008032128514 [2024-11-17 07:56:40,601 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 3 states and 137 transitions. [2024-11-17 07:56:40,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 458 flow [2024-11-17 07:56:40,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 86 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:40,606 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 344 flow [2024-11-17 07:56:40,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-11-17 07:56:40,607 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-17 07:56:40,608 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 344 flow [2024-11-17 07:56:40,609 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) [2024-11-17 07:56:40,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:40,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:40,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:56:40,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:40,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:40,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1319470595, now seen corresponding path program 1 times [2024-11-17 07:56:40,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:40,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805840542] [2024-11-17 07:56:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:40,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:40,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805840542] [2024-11-17 07:56:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805840542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:40,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:40,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:56:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203837707] [2024-11-17 07:56:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:40,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:40,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:40,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-17 07:56:40,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 344 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) [2024-11-17 07:56:40,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:40,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-17 07:56:40,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:41,321 INFO L124 PetriNetUnfolderBase]: 1426/2792 cut-off events. [2024-11-17 07:56:41,321 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2024-11-17 07:56:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 2792 events. 1426/2792 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17962 event pairs, 488 based on Foata normal form. 40/2395 useless extension candidates. Maximal degree in co-relation 5400. Up to 1515 conditions per place. [2024-11-17 07:56:41,334 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 68 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-17 07:56:41,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 521 flow [2024-11-17 07:56:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-17 07:56:41,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-11-17 07:56:41,336 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 344 flow. Second operand 3 states and 150 transitions. [2024-11-17 07:56:41,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 521 flow [2024-11-17 07:56:41,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 100 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:41,340 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 349 flow [2024-11-17 07:56:41,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-11-17 07:56:41,341 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2024-11-17 07:56:41,341 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 349 flow [2024-11-17 07:56:41,341 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) [2024-11-17 07:56:41,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:41,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:41,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:56:41,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:41,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash -260854041, now seen corresponding path program 1 times [2024-11-17 07:56:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787541627] [2024-11-17 07:56:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:41,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787541627] [2024-11-17 07:56:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787541627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:41,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:41,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:41,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022437192] [2024-11-17 07:56:41,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:41,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:41,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:41,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-17 07:56:41,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-17 07:56:41,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:41,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-17 07:56:41,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:41,927 INFO L124 PetriNetUnfolderBase]: 2855/5209 cut-off events. [2024-11-17 07:56:41,928 INFO L125 PetriNetUnfolderBase]: For 1038/1072 co-relation queries the response was YES. [2024-11-17 07:56:41,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 5209 events. 2855/5209 cut-off events. For 1038/1072 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 34711 event pairs, 1540 based on Foata normal form. 96/4688 useless extension candidates. Maximal degree in co-relation 10688. Up to 3069 conditions per place. [2024-11-17 07:56:41,964 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 94 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-17 07:56:41,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 651 flow [2024-11-17 07:56:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-17 07:56:41,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933734939759037 [2024-11-17 07:56:41,966 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 349 flow. Second operand 4 states and 197 transitions. [2024-11-17 07:56:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 651 flow [2024-11-17 07:56:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:41,969 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 376 flow [2024-11-17 07:56:41,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-11-17 07:56:41,970 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2024-11-17 07:56:41,970 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 376 flow [2024-11-17 07:56:41,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-17 07:56:41,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:41,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:41,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:56:41,971 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:41,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -336201050, now seen corresponding path program 1 times [2024-11-17 07:56:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:41,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081892973] [2024-11-17 07:56:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081892973] [2024-11-17 07:56:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081892973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:42,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:42,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:56:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017628758] [2024-11-17 07:56:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:42,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:42,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:56:42,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-17 07:56:42,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-17 07:56:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:42,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-17 07:56:42,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:42,370 INFO L124 PetriNetUnfolderBase]: 1713/3429 cut-off events. [2024-11-17 07:56:42,371 INFO L125 PetriNetUnfolderBase]: For 1288/1368 co-relation queries the response was YES. [2024-11-17 07:56:42,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 3429 events. 1713/3429 cut-off events. For 1288/1368 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22472 event pairs, 742 based on Foata normal form. 6/3077 useless extension candidates. Maximal degree in co-relation 7538. Up to 2287 conditions per place. [2024-11-17 07:56:42,394 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 65 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-17 07:56:42,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 537 flow [2024-11-17 07:56:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-17 07:56:42,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5783132530120482 [2024-11-17 07:56:42,396 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 376 flow. Second operand 3 states and 144 transitions. [2024-11-17 07:56:42,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 537 flow [2024-11-17 07:56:42,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 99 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:42,402 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 396 flow [2024-11-17 07:56:42,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-17 07:56:42,403 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-17 07:56:42,403 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 396 flow [2024-11-17 07:56:42,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-17 07:56:42,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:42,404 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:56:42,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:56:42,404 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:42,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash -146583714, now seen corresponding path program 2 times [2024-11-17 07:56:42,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:42,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040330864] [2024-11-17 07:56:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:42,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:42,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:42,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040330864] [2024-11-17 07:56:42,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040330864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924952897] [2024-11-17 07:56:42,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:42,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:42,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:42,553 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) [2024-11-17 07:56:42,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:56:42,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:56:42,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:42,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:56:42,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:42,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:56:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924952897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:42,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:56:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036918915] [2024-11-17 07:56:42,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:42,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:56:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:56:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:56:42,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-17 07:56:42,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 396 flow. Second operand has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 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) [2024-11-17 07:56:42,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:42,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-17 07:56:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:43,425 INFO L124 PetriNetUnfolderBase]: 1716/3490 cut-off events. [2024-11-17 07:56:43,426 INFO L125 PetriNetUnfolderBase]: For 2042/2134 co-relation queries the response was YES. [2024-11-17 07:56:43,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7962 conditions, 3490 events. 1716/3490 cut-off events. For 2042/2134 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23319 event pairs, 1328 based on Foata normal form. 4/3108 useless extension candidates. Maximal degree in co-relation 7941. Up to 2419 conditions per place. [2024-11-17 07:56:43,448 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 41 selfloop transitions, 39 changer transitions 0/106 dead transitions. [2024-11-17 07:56:43,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 610 flow [2024-11-17 07:56:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:56:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:56:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 750 transitions. [2024-11-17 07:56:43,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37650602409638556 [2024-11-17 07:56:43,452 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 396 flow. Second operand 24 states and 750 transitions. [2024-11-17 07:56:43,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 610 flow [2024-11-17 07:56:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 106 transitions, 601 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:43,457 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 523 flow [2024-11-17 07:56:43,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=523, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-11-17 07:56:43,458 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 39 predicate places. [2024-11-17 07:56:43,458 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 523 flow [2024-11-17 07:56:43,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 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) [2024-11-17 07:56:43,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:43,459 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] [2024-11-17 07:56:43,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:56:43,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:43,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:43,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash 966197505, now seen corresponding path program 1 times [2024-11-17 07:56:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:43,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634287950] [2024-11-17 07:56:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:43,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:43,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634287950] [2024-11-17 07:56:43,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634287950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:43,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:56:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:56:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618108640] [2024-11-17 07:56:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:43,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:56:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:56:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:56:43,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-17 07:56:43,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:43,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:43,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-17 07:56:43,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:44,192 INFO L124 PetriNetUnfolderBase]: 2027/4187 cut-off events. [2024-11-17 07:56:44,193 INFO L125 PetriNetUnfolderBase]: For 1848/2000 co-relation queries the response was YES. [2024-11-17 07:56:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 4187 events. 2027/4187 cut-off events. For 1848/2000 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 28569 event pairs, 1601 based on Foata normal form. 88/3864 useless extension candidates. Maximal degree in co-relation 9190. Up to 2458 conditions per place. [2024-11-17 07:56:44,225 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 82 selfloop transitions, 9 changer transitions 4/122 dead transitions. [2024-11-17 07:56:44,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 784 flow [2024-11-17 07:56:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:56:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:56:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2024-11-17 07:56:44,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204819277108433 [2024-11-17 07:56:44,227 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 523 flow. Second operand 5 states and 216 transitions. [2024-11-17 07:56:44,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 784 flow [2024-11-17 07:56:44,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 721 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-17 07:56:44,233 INFO L231 Difference]: Finished difference. Result has 112 places, 102 transitions, 483 flow [2024-11-17 07:56:44,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=112, PETRI_TRANSITIONS=102} [2024-11-17 07:56:44,234 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 36 predicate places. [2024-11-17 07:56:44,235 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 102 transitions, 483 flow [2024-11-17 07:56:44,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:56:44,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:44,235 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:44,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:56:44,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1395954339, now seen corresponding path program 1 times [2024-11-17 07:56:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948317915] [2024-11-17 07:56:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948317915] [2024-11-17 07:56:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948317915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359598890] [2024-11-17 07:56:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:44,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:44,403 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) [2024-11-17 07:56:44,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:56:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:44,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:56:44,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:44,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359598890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:44,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-17 07:56:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367244425] [2024-11-17 07:56:44,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:44,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:56:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:56:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:56:44,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-17 07:56:44,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 102 transitions, 483 flow. Second operand has 15 states, 15 states have (on average 30.0) internal successors, (450), 15 states have internal predecessors, (450), 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) [2024-11-17 07:56:44,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:44,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-17 07:56:44,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:45,869 INFO L124 PetriNetUnfolderBase]: 3253/6788 cut-off events. [2024-11-17 07:56:45,870 INFO L125 PetriNetUnfolderBase]: For 3131/3295 co-relation queries the response was YES. [2024-11-17 07:56:45,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15077 conditions, 6788 events. 3253/6788 cut-off events. For 3131/3295 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 51749 event pairs, 2135 based on Foata normal form. 224/6338 useless extension candidates. Maximal degree in co-relation 15051. Up to 2833 conditions per place. [2024-11-17 07:56:45,929 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 116 selfloop transitions, 30 changer transitions 23/195 dead transitions. [2024-11-17 07:56:45,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 195 transitions, 1292 flow [2024-11-17 07:56:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:56:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:56:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 404 transitions. [2024-11-17 07:56:45,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4424972617743702 [2024-11-17 07:56:45,931 INFO L175 Difference]: Start difference. First operand has 112 places, 102 transitions, 483 flow. Second operand 11 states and 404 transitions. [2024-11-17 07:56:45,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 195 transitions, 1292 flow [2024-11-17 07:56:45,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 195 transitions, 1271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:56:45,941 INFO L231 Difference]: Finished difference. Result has 125 places, 117 transitions, 716 flow [2024-11-17 07:56:45,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=716, PETRI_PLACES=125, PETRI_TRANSITIONS=117} [2024-11-17 07:56:45,942 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2024-11-17 07:56:45,942 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 117 transitions, 716 flow [2024-11-17 07:56:45,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.0) internal successors, (450), 15 states have internal predecessors, (450), 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) [2024-11-17 07:56:45,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:45,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:45,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:56:46,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-17 07:56:46,144 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:46,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1102451789, now seen corresponding path program 1 times [2024-11-17 07:56:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013277880] [2024-11-17 07:56:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013277880] [2024-11-17 07:56:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013277880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173556234] [2024-11-17 07:56:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:46,278 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) [2024-11-17 07:56:46,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:56:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:46,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:46,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:56:46,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173556234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-17 07:56:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342932493] [2024-11-17 07:56:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:46,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:56:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:56:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:56:46,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-17 07:56:46,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 117 transitions, 716 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) [2024-11-17 07:56:46,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:46,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-17 07:56:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:46,913 INFO L124 PetriNetUnfolderBase]: 2469/5660 cut-off events. [2024-11-17 07:56:46,913 INFO L125 PetriNetUnfolderBase]: For 3735/3835 co-relation queries the response was YES. [2024-11-17 07:56:46,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12452 conditions, 5660 events. 2469/5660 cut-off events. For 3735/3835 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 45058 event pairs, 2016 based on Foata normal form. 230/5360 useless extension candidates. Maximal degree in co-relation 12420. Up to 3717 conditions per place. [2024-11-17 07:56:46,949 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 78 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-17 07:56:46,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 115 transitions, 866 flow [2024-11-17 07:56:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:56:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:56:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-17 07:56:46,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381526104417671 [2024-11-17 07:56:46,950 INFO L175 Difference]: Start difference. First operand has 125 places, 117 transitions, 716 flow. Second operand 3 states and 134 transitions. [2024-11-17 07:56:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 115 transitions, 866 flow [2024-11-17 07:56:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 115 transitions, 848 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-17 07:56:46,959 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 692 flow [2024-11-17 07:56:46,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=119, 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=692, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-11-17 07:56:46,960 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 45 predicate places. [2024-11-17 07:56:46,960 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 692 flow [2024-11-17 07:56:46,960 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) [2024-11-17 07:56:46,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:46,960 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:46,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:56:47,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:47,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:47,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1246840426, now seen corresponding path program 2 times [2024-11-17 07:56:47,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:47,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71681721] [2024-11-17 07:56:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:47,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:47,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71681721] [2024-11-17 07:56:47,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71681721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578523970] [2024-11-17 07:56:47,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:56:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:47,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:47,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:56:47,334 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:56:47,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:56:47,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:56:47,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:47,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:56:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578523970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:56:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:56:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:56:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681282252] [2024-11-17 07:56:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:56:47,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:56:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:56:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:56:47,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-17 07:56:47,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 692 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-17 07:56:47,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:47,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-17 07:56:47,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:48,124 INFO L124 PetriNetUnfolderBase]: 3665/7316 cut-off events. [2024-11-17 07:56:48,124 INFO L125 PetriNetUnfolderBase]: For 3505/3549 co-relation queries the response was YES. [2024-11-17 07:56:48,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 7316 events. 3665/7316 cut-off events. For 3505/3549 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 53640 event pairs, 1294 based on Foata normal form. 88/6786 useless extension candidates. Maximal degree in co-relation 16494. Up to 2154 conditions per place. [2024-11-17 07:56:48,171 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 106 selfloop transitions, 7 changer transitions 0/144 dead transitions. [2024-11-17 07:56:48,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 144 transitions, 1000 flow [2024-11-17 07:56:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:56:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:56:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-17 07:56:48,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481927710843374 [2024-11-17 07:56:48,172 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 692 flow. Second operand 4 states and 182 transitions. [2024-11-17 07:56:48,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 144 transitions, 1000 flow [2024-11-17 07:56:48,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:56:48,183 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 701 flow [2024-11-17 07:56:48,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=701, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-11-17 07:56:48,184 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 46 predicate places. [2024-11-17 07:56:48,184 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 701 flow [2024-11-17 07:56:48,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-17 07:56:48,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:48,185 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-17 07:56:48,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:56:48,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:48,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:48,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 561687408, now seen corresponding path program 1 times [2024-11-17 07:56:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682046706] [2024-11-17 07:56:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:48,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682046706] [2024-11-17 07:56:48,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682046706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242766851] [2024-11-17 07:56:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:48,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:48,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:48,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:56:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:48,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 07:56:48,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:49,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:56:49,461 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:56:49,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-17 07:56:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:49,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:49,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:56:49,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:56:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:56:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242766851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:49,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-17 07:56:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019216025] [2024-11-17 07:56:49,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:49,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:56:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:56:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:56:50,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-17 07:56:50,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 701 flow. Second operand has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 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) [2024-11-17 07:56:50,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:50,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-17 07:56:50,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:54,665 INFO L124 PetriNetUnfolderBase]: 13433/24505 cut-off events. [2024-11-17 07:56:54,665 INFO L125 PetriNetUnfolderBase]: For 20143/20398 co-relation queries the response was YES. [2024-11-17 07:56:54,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59715 conditions, 24505 events. 13433/24505 cut-off events. For 20143/20398 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 207654 event pairs, 4321 based on Foata normal form. 0/22410 useless extension candidates. Maximal degree in co-relation 59683. Up to 3697 conditions per place. [2024-11-17 07:56:54,827 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 331 selfloop transitions, 94 changer transitions 2/448 dead transitions. [2024-11-17 07:56:54,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 448 transitions, 2878 flow [2024-11-17 07:56:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-17 07:56:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-17 07:56:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1527 transitions. [2024-11-17 07:56:54,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3832831325301205 [2024-11-17 07:56:54,833 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 701 flow. Second operand 48 states and 1527 transitions. [2024-11-17 07:56:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 448 transitions, 2878 flow [2024-11-17 07:56:54,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 448 transitions, 2740 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:56:54,861 INFO L231 Difference]: Finished difference. Result has 177 places, 160 transitions, 1208 flow [2024-11-17 07:56:54,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1208, PETRI_PLACES=177, PETRI_TRANSITIONS=160} [2024-11-17 07:56:54,862 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 101 predicate places. [2024-11-17 07:56:54,862 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 160 transitions, 1208 flow [2024-11-17 07:56:54,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 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) [2024-11-17 07:56:54,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:54,863 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-17 07:56:54,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:56:55,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 07:56:55,064 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:55,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 248021384, now seen corresponding path program 1 times [2024-11-17 07:56:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:55,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831699403] [2024-11-17 07:56:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:55,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831699403] [2024-11-17 07:56:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831699403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910095072] [2024-11-17 07:56:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:55,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:55,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:55,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:55,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:56:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:55,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 07:56:55,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:55,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:56:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910095072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:55,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-17 07:56:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941696677] [2024-11-17 07:56:55,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:55,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:56:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:56:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:56:55,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-11-17 07:56:55,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 160 transitions, 1208 flow. Second operand has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 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) [2024-11-17 07:56:55,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:55,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-11-17 07:56:55,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:56:57,779 INFO L124 PetriNetUnfolderBase]: 7833/17548 cut-off events. [2024-11-17 07:56:57,779 INFO L125 PetriNetUnfolderBase]: For 24354/24687 co-relation queries the response was YES. [2024-11-17 07:56:57,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46959 conditions, 17548 events. 7833/17548 cut-off events. For 24354/24687 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 169272 event pairs, 6314 based on Foata normal form. 21/16214 useless extension candidates. Maximal degree in co-relation 46915. Up to 11339 conditions per place. [2024-11-17 07:56:57,906 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 76 selfloop transitions, 108 changer transitions 0/223 dead transitions. [2024-11-17 07:56:57,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 223 transitions, 2374 flow [2024-11-17 07:56:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 07:56:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 07:56:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 890 transitions. [2024-11-17 07:56:57,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41241890639481 [2024-11-17 07:56:57,910 INFO L175 Difference]: Start difference. First operand has 177 places, 160 transitions, 1208 flow. Second operand 26 states and 890 transitions. [2024-11-17 07:56:57,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 223 transitions, 2374 flow [2024-11-17 07:56:58,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 223 transitions, 2211 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-11-17 07:56:58,219 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2131 flow [2024-11-17 07:56:58,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2131, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-11-17 07:56:58,220 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2024-11-17 07:56:58,220 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2131 flow [2024-11-17 07:56:58,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 31.071428571428573) internal successors, (870), 28 states have internal predecessors, (870), 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) [2024-11-17 07:56:58,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:56:58,221 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:56:58,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:56:58,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:56:58,422 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:56:58,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:56:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2653168, now seen corresponding path program 1 times [2024-11-17 07:56:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:56:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736598895] [2024-11-17 07:56:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:56:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:58,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:56:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736598895] [2024-11-17 07:56:58,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736598895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:56:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819325730] [2024-11-17 07:56:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:56:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:56:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:56:58,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:56:58,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:56:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:56:58,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:56:58,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:56:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:58,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:56:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:56:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819325730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:56:58,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:56:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:56:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821311256] [2024-11-17 07:56:58,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:56:58,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:56:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:56:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:56:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:56:58,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-17 07:56:58,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2131 flow. Second operand has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2024-11-17 07:56:58,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:56:58,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-17 07:56:58,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:02,815 INFO L124 PetriNetUnfolderBase]: 15314/32021 cut-off events. [2024-11-17 07:57:02,815 INFO L125 PetriNetUnfolderBase]: For 37891/38384 co-relation queries the response was YES. [2024-11-17 07:57:03,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82544 conditions, 32021 events. 15314/32021 cut-off events. For 37891/38384 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 307458 event pairs, 4376 based on Foata normal form. 0/29524 useless extension candidates. Maximal degree in co-relation 82493. Up to 10218 conditions per place. [2024-11-17 07:57:03,329 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 437 selfloop transitions, 13 changer transitions 0/487 dead transitions. [2024-11-17 07:57:03,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 487 transitions, 4364 flow [2024-11-17 07:57:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2024-11-17 07:57:03,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698795180722892 [2024-11-17 07:57:03,331 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2131 flow. Second operand 10 states and 473 transitions. [2024-11-17 07:57:03,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 487 transitions, 4364 flow [2024-11-17 07:57:03,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 487 transitions, 4034 flow, removed 108 selfloop flow, removed 13 redundant places. [2024-11-17 07:57:03,503 INFO L231 Difference]: Finished difference. Result has 194 places, 232 transitions, 1881 flow [2024-11-17 07:57:03,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1881, PETRI_PLACES=194, PETRI_TRANSITIONS=232} [2024-11-17 07:57:03,504 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 118 predicate places. [2024-11-17 07:57:03,504 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 232 transitions, 1881 flow [2024-11-17 07:57:03,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2024-11-17 07:57:03,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:03,505 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-17 07:57:03,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:03,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 07:57:03,705 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:03,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash -662846916, now seen corresponding path program 1 times [2024-11-17 07:57:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:03,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689069835] [2024-11-17 07:57:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689069835] [2024-11-17 07:57:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689069835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688151344] [2024-11-17 07:57:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:04,117 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:04,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:57:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:04,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 07:57:04,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:04,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:04,506 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:57:04,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-17 07:57:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:04,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:04,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-17 07:57:04,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-17 07:57:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688151344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:05,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-17 07:57:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369145405] [2024-11-17 07:57:05,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:05,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:57:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:57:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:57:05,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-17 07:57:05,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 232 transitions, 1881 flow. Second operand has 24 states, 24 states have (on average 27.083333333333332) internal successors, (650), 24 states have internal predecessors, (650), 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) [2024-11-17 07:57:05,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:05,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-17 07:57:05,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:11,701 INFO L124 PetriNetUnfolderBase]: 19464/37043 cut-off events. [2024-11-17 07:57:11,701 INFO L125 PetriNetUnfolderBase]: For 67289/67715 co-relation queries the response was YES. [2024-11-17 07:57:12,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107898 conditions, 37043 events. 19464/37043 cut-off events. For 67289/67715 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 334507 event pairs, 8691 based on Foata normal form. 602/35883 useless extension candidates. Maximal degree in co-relation 107847. Up to 6801 conditions per place. [2024-11-17 07:57:12,134 INFO L140 encePairwiseOnDemand]: 66/83 looper letters, 408 selfloop transitions, 153 changer transitions 0/589 dead transitions. [2024-11-17 07:57:12,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 589 transitions, 4674 flow [2024-11-17 07:57:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-17 07:57:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-17 07:57:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1598 transitions. [2024-11-17 07:57:12,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3929186132284239 [2024-11-17 07:57:12,139 INFO L175 Difference]: Start difference. First operand has 194 places, 232 transitions, 1881 flow. Second operand 49 states and 1598 transitions. [2024-11-17 07:57:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 589 transitions, 4674 flow [2024-11-17 07:57:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 589 transitions, 4420 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:12,816 INFO L231 Difference]: Finished difference. Result has 251 places, 251 transitions, 2360 flow [2024-11-17 07:57:12,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2360, PETRI_PLACES=251, PETRI_TRANSITIONS=251} [2024-11-17 07:57:12,817 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 175 predicate places. [2024-11-17 07:57:12,817 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 251 transitions, 2360 flow [2024-11-17 07:57:12,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 27.083333333333332) internal successors, (650), 24 states have internal predecessors, (650), 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) [2024-11-17 07:57:12,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:12,818 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-17 07:57:12,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:13,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 07:57:13,023 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:13,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2065622628, now seen corresponding path program 1 times [2024-11-17 07:57:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817177817] [2024-11-17 07:57:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:14,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817177817] [2024-11-17 07:57:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817177817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255326966] [2024-11-17 07:57:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:14,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:14,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:14,757 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:14,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:57:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:14,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:57:14,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:14,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:15,335 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:57:15,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-17 07:57:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:15,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:15,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:57:15,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:57:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255326966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:15,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:15,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 32 [2024-11-17 07:57:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933581879] [2024-11-17 07:57:15,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:15,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 07:57:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:15,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 07:57:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 07:57:16,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-17 07:57:16,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 251 transitions, 2360 flow. Second operand has 34 states, 34 states have (on average 25.941176470588236) internal successors, (882), 34 states have internal predecessors, (882), 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) [2024-11-17 07:57:16,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:16,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-17 07:57:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:26,544 INFO L124 PetriNetUnfolderBase]: 27883/51581 cut-off events. [2024-11-17 07:57:26,544 INFO L125 PetriNetUnfolderBase]: For 120971/122953 co-relation queries the response was YES. [2024-11-17 07:57:27,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155176 conditions, 51581 events. 27883/51581 cut-off events. For 120971/122953 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 488895 event pairs, 3390 based on Foata normal form. 100/48424 useless extension candidates. Maximal degree in co-relation 155112. Up to 15372 conditions per place. [2024-11-17 07:57:27,258 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 575 selfloop transitions, 166 changer transitions 4/774 dead transitions. [2024-11-17 07:57:27,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 774 transitions, 6720 flow [2024-11-17 07:57:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-17 07:57:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-17 07:57:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1450 transitions. [2024-11-17 07:57:27,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38821954484605087 [2024-11-17 07:57:27,261 INFO L175 Difference]: Start difference. First operand has 251 places, 251 transitions, 2360 flow. Second operand 45 states and 1450 transitions. [2024-11-17 07:57:27,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 774 transitions, 6720 flow [2024-11-17 07:57:28,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 774 transitions, 6436 flow, removed 33 selfloop flow, removed 29 redundant places. [2024-11-17 07:57:28,617 INFO L231 Difference]: Finished difference. Result has 277 places, 310 transitions, 2994 flow [2024-11-17 07:57:28,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2994, PETRI_PLACES=277, PETRI_TRANSITIONS=310} [2024-11-17 07:57:28,618 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-11-17 07:57:28,618 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 310 transitions, 2994 flow [2024-11-17 07:57:28,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 25.941176470588236) internal successors, (882), 34 states have internal predecessors, (882), 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) [2024-11-17 07:57:28,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:28,619 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-17 07:57:28,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:57:28,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:57:28,819 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:28,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1845298442, now seen corresponding path program 2 times [2024-11-17 07:57:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756152801] [2024-11-17 07:57:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:28,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:30,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756152801] [2024-11-17 07:57:30,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756152801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667215511] [2024-11-17 07:57:30,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:30,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:30,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:30,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:57:30,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:30,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:30,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 07:57:30,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:30,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:30,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2024-11-17 07:57:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:30,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:30,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667215511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:30,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:30,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 20 [2024-11-17 07:57:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168811419] [2024-11-17 07:57:30,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:30,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:57:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:57:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:57:30,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-17 07:57:30,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 310 transitions, 2994 flow. Second operand has 8 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2024-11-17 07:57:30,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:30,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-17 07:57:30,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:41,140 INFO L124 PetriNetUnfolderBase]: 32861/66396 cut-off events. [2024-11-17 07:57:41,140 INFO L125 PetriNetUnfolderBase]: For 210943/213583 co-relation queries the response was YES. [2024-11-17 07:57:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214815 conditions, 66396 events. 32861/66396 cut-off events. For 210943/213583 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 696403 event pairs, 4120 based on Foata normal form. 1656/67333 useless extension candidates. Maximal degree in co-relation 214739. Up to 23769 conditions per place. [2024-11-17 07:57:42,235 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 420 selfloop transitions, 63 changer transitions 0/526 dead transitions. [2024-11-17 07:57:42,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 526 transitions, 5324 flow [2024-11-17 07:57:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:57:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:57:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-11-17 07:57:42,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466867469879518 [2024-11-17 07:57:42,237 INFO L175 Difference]: Start difference. First operand has 277 places, 310 transitions, 2994 flow. Second operand 8 states and 363 transitions. [2024-11-17 07:57:42,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 526 transitions, 5324 flow [2024-11-17 07:57:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 526 transitions, 5110 flow, removed 50 selfloop flow, removed 12 redundant places. [2024-11-17 07:57:46,308 INFO L231 Difference]: Finished difference. Result has 277 places, 334 transitions, 3264 flow [2024-11-17 07:57:46,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=277, PETRI_TRANSITIONS=334} [2024-11-17 07:57:46,309 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-11-17 07:57:46,309 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 334 transitions, 3264 flow [2024-11-17 07:57:46,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 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) [2024-11-17 07:57:46,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:46,309 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-17 07:57:46,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:46,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,510 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-17 07:57:46,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash -532225186, now seen corresponding path program 1 times [2024-11-17 07:57:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586694093] [2024-11-17 07:57:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586694093] [2024-11-17 07:57:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586694093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:47,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284645862] [2024-11-17 07:57:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:47,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:47,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:47,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:57:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:57:47,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:47,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:47,723 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 07:57:47,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-17 07:57:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:47,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:48,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:57:48,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:57:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284645862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:48,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2024-11-17 07:57:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499427568] [2024-11-17 07:57:48,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-17 07:57:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-17 07:57:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-17 07:57:48,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 83 [2024-11-17 07:57:48,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 334 transitions, 3264 flow. Second operand has 29 states, 29 states have (on average 26.275862068965516) internal successors, (762), 29 states have internal predecessors, (762), 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) [2024-11-17 07:57:48,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 83 [2024-11-17 07:57:48,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand