./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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-three-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:57:38,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:57:38,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:57:38,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:57:38,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:57:38,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:57:38,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:57:38,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:57:38,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:57:38,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:57:38,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:57:38,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:57:38,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:57:38,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:57:38,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:57:38,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:57:38,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:57:38,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:57:38,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:57:38,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:57:38,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:57:38,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:57:38,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:57:38,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:57:38,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:57:38,684 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:57:38,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:57:38,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:57:38,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:57:38,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:57:38,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:57:38,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:57:38,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:57:38,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:57:38,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:38,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:57:38,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:57:38,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:57:38,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:57:38,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:57:38,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:57:38,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:57:38,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:57:38,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:57:38,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-17 07:57:38,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:57:38,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:57:38,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:57:38,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:57:38,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:57:38,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-17 07:57:40,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:57:40,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:57:40,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-17 07:57:40,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f033adb9/d162920b3e234869913acb7d82481561/FLAG96eac4c1d [2024-11-17 07:57:41,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f033adb9/d162920b3e234869913acb7d82481561 [2024-11-17 07:57:41,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:57:41,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:57:41,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:41,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:57:41,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:57:41,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68939c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41, skipping insertion in model container [2024-11-17 07:57:41,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:57:41,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:41,285 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:57:41,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:41,326 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:57:41,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41 WrapperNode [2024-11-17 07:57:41,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:41,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:41,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:57:41,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:57:41,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,371 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 143 [2024-11-17 07:57:41,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:41,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:57:41,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:57:41,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:57:41,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,412 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-17 07:57:41,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:57:41,432 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:57:41,432 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:57:41,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:57:41,434 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (1/1) ... [2024-11-17 07:57:41,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:41,469 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 07:57:41,471 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 07:57:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:57:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:57:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:57:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:57:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:57:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:57:41,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:57:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:57:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:57:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:57:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:57:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:57:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:57:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:57:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:57:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:57:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:57:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:57:41,528 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 07:57:41,652 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:57:41,654 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:57:42,050 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:57:42,050 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:57:42,334 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:57:42,334 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:57:42,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:42 BoogieIcfgContainer [2024-11-17 07:57:42,335 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:57:42,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:57:42,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:57:42,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:57:42,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:57:41" (1/3) ... [2024-11-17 07:57:42,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df9fdf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:42, skipping insertion in model container [2024-11-17 07:57:42,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:41" (2/3) ... [2024-11-17 07:57:42,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df9fdf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:42, skipping insertion in model container [2024-11-17 07:57:42,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:42" (3/3) ... [2024-11-17 07:57:42,348 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-17 07:57:42,366 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:57:42,366 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-17 07:57:42,366 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:57:42,438 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:57:42,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 183 flow [2024-11-17 07:57:42,536 INFO L124 PetriNetUnfolderBase]: 13/78 cut-off events. [2024-11-17 07:57:42,536 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:57:42,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 13/78 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-11-17 07:57:42,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 81 transitions, 183 flow [2024-11-17 07:57:42,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 76 transitions, 167 flow [2024-11-17 07:57:42,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:57:42,559 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;@1d215c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:57:42,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-17 07:57:42,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:57:42,563 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:57:42,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:57:42,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:42,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:57:42,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:42,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 17090865, now seen corresponding path program 1 times [2024-11-17 07:57:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:42,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019356381] [2024-11-17 07:57:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:42,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:42,909 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 07:57:42,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:42,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019356381] [2024-11-17 07:57:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019356381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991973472] [2024-11-17 07:57:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:42,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:42,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-17 07:57:42,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:42,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:42,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-17 07:57:43,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:43,371 INFO L124 PetriNetUnfolderBase]: 830/1675 cut-off events. [2024-11-17 07:57:43,371 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-17 07:57:43,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1675 events. 830/1675 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10967 event pairs, 594 based on Foata normal form. 192/1554 useless extension candidates. Maximal degree in co-relation 2574. Up to 1126 conditions per place. [2024-11-17 07:57:43,391 INFO L140 encePairwiseOnDemand]: 59/81 looper letters, 38 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-11-17 07:57:43,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 269 flow [2024-11-17 07:57:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-17 07:57:43,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6141975308641975 [2024-11-17 07:57:43,406 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 167 flow. Second operand 4 states and 199 transitions. [2024-11-17 07:57:43,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 269 flow [2024-11-17 07:57:43,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:43,446 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 234 flow [2024-11-17 07:57:43,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-11-17 07:57:43,454 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2024-11-17 07:57:43,454 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 234 flow [2024-11-17 07:57:43,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:43,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:43,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:57:43,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:57:43,456 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:43,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash -218263280, now seen corresponding path program 1 times [2024-11-17 07:57:43,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:43,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524235179] [2024-11-17 07:57:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:43,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:43,656 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 07:57:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524235179] [2024-11-17 07:57:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524235179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111417072] [2024-11-17 07:57:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:43,660 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 07:57:43,661 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 07:57:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:43,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:43,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:43,811 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 07:57:43,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:43,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111417072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:43,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:43,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:57:43,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418457966] [2024-11-17 07:57:43,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:43,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:43,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:43,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:57:43,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-17 07:57:43,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 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 07:57:43,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:43,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-17 07:57:43,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:44,119 INFO L124 PetriNetUnfolderBase]: 830/1672 cut-off events. [2024-11-17 07:57:44,120 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-17 07:57:44,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 1672 events. 830/1672 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10933 event pairs, 594 based on Foata normal form. 3/1362 useless extension candidates. Maximal degree in co-relation 2813. Up to 1111 conditions per place. [2024-11-17 07:57:44,130 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 28 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-11-17 07:57:44,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 312 flow [2024-11-17 07:57:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-17 07:57:44,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-17 07:57:44,133 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 234 flow. Second operand 6 states and 252 transitions. [2024-11-17 07:57:44,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 312 flow [2024-11-17 07:57:44,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:44,138 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 256 flow [2024-11-17 07:57:44,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-17 07:57:44,139 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-17 07:57:44,139 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 256 flow [2024-11-17 07:57:44,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 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 07:57:44,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:44,140 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:57:44,159 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 07:57:44,344 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 07:57:44,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:44,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1823773357, now seen corresponding path program 1 times [2024-11-17 07:57:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802743876] [2024-11-17 07:57:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:44,463 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 07:57:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802743876] [2024-11-17 07:57:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802743876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534046683] [2024-11-17 07:57:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:44,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:44,469 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 07:57:44,471 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 07:57:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:44,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:44,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:44,577 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 07:57:44,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:44,632 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 07:57:44,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534046683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:44,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:44,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:57:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234610350] [2024-11-17 07:57:44,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:44,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:44,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-17 07:57:44,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 35.083333333333336) internal successors, (421), 12 states have internal predecessors, (421), 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 07:57:44,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:44,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-17 07:57:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:45,071 INFO L124 PetriNetUnfolderBase]: 839/1726 cut-off events. [2024-11-17 07:57:45,071 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-11-17 07:57:45,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 1726 events. 839/1726 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11459 event pairs, 594 based on Foata normal form. 9/1425 useless extension candidates. Maximal degree in co-relation 2815. Up to 1126 conditions per place. [2024-11-17 07:57:45,083 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 35 selfloop transitions, 37 changer transitions 0/103 dead transitions. [2024-11-17 07:57:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 574 flow [2024-11-17 07:57:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 421 transitions. [2024-11-17 07:57:45,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.519753086419753 [2024-11-17 07:57:45,087 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 256 flow. Second operand 10 states and 421 transitions. [2024-11-17 07:57:45,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 574 flow [2024-11-17 07:57:45,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 103 transitions, 491 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:45,094 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 471 flow [2024-11-17 07:57:45,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-11-17 07:57:45,095 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-17 07:57:45,096 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 471 flow [2024-11-17 07:57:45,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.083333333333336) internal successors, (421), 12 states have internal predecessors, (421), 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 07:57:45,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:45,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:45,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:57:45,300 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 07:57:45,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:45,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1172645359, now seen corresponding path program 1 times [2024-11-17 07:57:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:45,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541992823] [2024-11-17 07:57:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:45,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:45,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541992823] [2024-11-17 07:57:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541992823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:45,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903419010] [2024-11-17 07:57:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:45,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:45,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-17 07:57:45,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 07:57:45,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:45,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-17 07:57:45,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:45,738 INFO L124 PetriNetUnfolderBase]: 1707/3271 cut-off events. [2024-11-17 07:57:45,738 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-17 07:57:45,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5831 conditions, 3271 events. 1707/3271 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23137 event pairs, 914 based on Foata normal form. 86/2766 useless extension candidates. Maximal degree in co-relation 5727. Up to 1771 conditions per place. [2024-11-17 07:57:45,761 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 102 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2024-11-17 07:57:45,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 759 flow [2024-11-17 07:57:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-11-17 07:57:45,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2024-11-17 07:57:45,762 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 471 flow. Second operand 4 states and 224 transitions. [2024-11-17 07:57:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 759 flow [2024-11-17 07:57:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 138 transitions, 722 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:45,767 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 463 flow [2024-11-17 07:57:45,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2024-11-17 07:57:45,768 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2024-11-17 07:57:45,769 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 463 flow [2024-11-17 07:57:45,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 07:57:45,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:45,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:45,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:57:45,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:45,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash 756414975, now seen corresponding path program 1 times [2024-11-17 07:57:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135253288] [2024-11-17 07:57:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:45,829 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 07:57:45,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135253288] [2024-11-17 07:57:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135253288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:45,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:45,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:45,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597035949] [2024-11-17 07:57:45,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:45,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:45,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:45,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:45,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-17 07:57:45,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 07:57:45,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:45,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-17 07:57:45,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:46,241 INFO L124 PetriNetUnfolderBase]: 1889/3864 cut-off events. [2024-11-17 07:57:46,241 INFO L125 PetriNetUnfolderBase]: For 1412/1620 co-relation queries the response was YES. [2024-11-17 07:57:46,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 3864 events. 1889/3864 cut-off events. For 1412/1620 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 28124 event pairs, 898 based on Foata normal form. 0/3269 useless extension candidates. Maximal degree in co-relation 7584. Up to 1970 conditions per place. [2024-11-17 07:57:46,268 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 88 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-11-17 07:57:46,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 705 flow [2024-11-17 07:57:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-17 07:57:46,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-17 07:57:46,269 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 463 flow. Second operand 3 states and 171 transitions. [2024-11-17 07:57:46,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 705 flow [2024-11-17 07:57:46,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:46,276 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 481 flow [2024-11-17 07:57:46,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-11-17 07:57:46,279 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2024-11-17 07:57:46,279 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 481 flow [2024-11-17 07:57:46,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 07:57:46,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:46,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:46,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:57:46,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:46,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1065337955, now seen corresponding path program 1 times [2024-11-17 07:57:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666068820] [2024-11-17 07:57:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,347 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 07:57:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666068820] [2024-11-17 07:57:46,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666068820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:46,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:46,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:46,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099489007] [2024-11-17 07:57:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:46,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:46,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:57:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 07:57:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:57:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:46,943 INFO L124 PetriNetUnfolderBase]: 2770/4992 cut-off events. [2024-11-17 07:57:46,944 INFO L125 PetriNetUnfolderBase]: For 2384/2707 co-relation queries the response was YES. [2024-11-17 07:57:46,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 4992 events. 2770/4992 cut-off events. For 2384/2707 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 34463 event pairs, 1387 based on Foata normal form. 180/4698 useless extension candidates. Maximal degree in co-relation 10990. Up to 2904 conditions per place. [2024-11-17 07:57:46,990 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 107 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-17 07:57:46,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 809 flow [2024-11-17 07:57:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-17 07:57:46,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:57:46,992 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 481 flow. Second operand 4 states and 216 transitions. [2024-11-17 07:57:46,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 809 flow [2024-11-17 07:57:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 142 transitions, 806 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:46,996 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 499 flow [2024-11-17 07:57:46,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-11-17 07:57:46,999 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-17 07:57:46,999 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 499 flow [2024-11-17 07:57:46,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 07:57:46,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:47,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:57:47,000 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:47,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash 520349227, now seen corresponding path program 1 times [2024-11-17 07:57:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638464600] [2024-11-17 07:57:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 07:57:47,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638464600] [2024-11-17 07:57:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638464600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:47,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:47,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539559131] [2024-11-17 07:57:47,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:47,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:47,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:57:47,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 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 07:57:47,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:47,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:57:47,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:47,736 INFO L124 PetriNetUnfolderBase]: 2618/5278 cut-off events. [2024-11-17 07:57:47,737 INFO L125 PetriNetUnfolderBase]: For 3588/3779 co-relation queries the response was YES. [2024-11-17 07:57:47,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11776 conditions, 5278 events. 2618/5278 cut-off events. For 3588/3779 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 38517 event pairs, 1530 based on Foata normal form. 110/4701 useless extension candidates. Maximal degree in co-relation 11605. Up to 2352 conditions per place. [2024-11-17 07:57:47,771 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 129 selfloop transitions, 24 changer transitions 0/185 dead transitions. [2024-11-17 07:57:47,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 185 transitions, 1140 flow [2024-11-17 07:57:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 322 transitions. [2024-11-17 07:57:47,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625514403292181 [2024-11-17 07:57:47,773 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 499 flow. Second operand 6 states and 322 transitions. [2024-11-17 07:57:47,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 185 transitions, 1140 flow [2024-11-17 07:57:47,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:47,783 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 631 flow [2024-11-17 07:57:47,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=631, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-11-17 07:57:47,784 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-11-17 07:57:47,784 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 631 flow [2024-11-17 07:57:47,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 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 07:57:47,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,785 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:57:47,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:57:47,785 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:47,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -678511696, now seen corresponding path program 2 times [2024-11-17 07:57:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607123211] [2024-11-17 07:57:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,945 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 07:57:47,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607123211] [2024-11-17 07:57:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607123211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448615467] [2024-11-17 07:57:47,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:47,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:47,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:47,949 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 07:57:47,953 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 07:57:48,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:48,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:48,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:48,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:48,077 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 07:57:48,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:48,129 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 07:57:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448615467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:48,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:57:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228122719] [2024-11-17 07:57:48,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:57:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:57:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:57:48,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-17 07:57:48,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 631 flow. Second operand has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 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 07:57:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-17 07:57:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:49,151 INFO L124 PetriNetUnfolderBase]: 2693/5473 cut-off events. [2024-11-17 07:57:49,152 INFO L125 PetriNetUnfolderBase]: For 4498/4498 co-relation queries the response was YES. [2024-11-17 07:57:49,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12906 conditions, 5473 events. 2693/5473 cut-off events. For 4498/4498 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 40865 event pairs, 2000 based on Foata normal form. 6/4960 useless extension candidates. Maximal degree in co-relation 12632. Up to 3654 conditions per place. [2024-11-17 07:57:49,243 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 45 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2024-11-17 07:57:49,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 143 transitions, 979 flow [2024-11-17 07:57:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:57:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:57:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 846 transitions. [2024-11-17 07:57:49,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-17 07:57:49,247 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 631 flow. Second operand 24 states and 846 transitions. [2024-11-17 07:57:49,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 143 transitions, 979 flow [2024-11-17 07:57:49,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 979 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:49,263 INFO L231 Difference]: Finished difference. Result has 123 places, 139 transitions, 909 flow [2024-11-17 07:57:49,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=909, PETRI_PLACES=123, PETRI_TRANSITIONS=139} [2024-11-17 07:57:49,264 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 50 predicate places. [2024-11-17 07:57:49,265 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 139 transitions, 909 flow [2024-11-17 07:57:49,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 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 07:57:49,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:49,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:49,281 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 07:57:49,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:49,470 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:49,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1184497894, now seen corresponding path program 1 times [2024-11-17 07:57:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:49,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727731237] [2024-11-17 07:57:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:49,531 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 07:57:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727731237] [2024-11-17 07:57:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727731237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759045534] [2024-11-17 07:57:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:49,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:49,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:57:49,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 139 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:49,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:49,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:57:49,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:50,580 INFO L124 PetriNetUnfolderBase]: 5963/10723 cut-off events. [2024-11-17 07:57:50,581 INFO L125 PetriNetUnfolderBase]: For 9481/9689 co-relation queries the response was YES. [2024-11-17 07:57:50,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25947 conditions, 10723 events. 5963/10723 cut-off events. For 9481/9689 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 80886 event pairs, 2828 based on Foata normal form. 162/9783 useless extension candidates. Maximal degree in co-relation 25828. Up to 5186 conditions per place. [2024-11-17 07:57:50,651 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 137 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2024-11-17 07:57:50,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 184 transitions, 1385 flow [2024-11-17 07:57:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-17 07:57:50,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-17 07:57:50,653 INFO L175 Difference]: Start difference. First operand has 123 places, 139 transitions, 909 flow. Second operand 4 states and 217 transitions. [2024-11-17 07:57:50,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 184 transitions, 1385 flow [2024-11-17 07:57:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 184 transitions, 1235 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-17 07:57:50,677 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 781 flow [2024-11-17 07:57:50,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-11-17 07:57:50,678 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 46 predicate places. [2024-11-17 07:57:50,678 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 781 flow [2024-11-17 07:57:50,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:50,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:50,679 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] [2024-11-17 07:57:50,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:57:50,679 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:50,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 946723705, now seen corresponding path program 1 times [2024-11-17 07:57:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107132264] [2024-11-17 07:57:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:50,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:50,867 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 07:57:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107132264] [2024-11-17 07:57:50,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107132264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:50,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300188804] [2024-11-17 07:57:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:50,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:50,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:50,870 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 07:57:50,872 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 07:57:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:50,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:50,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 07:57:51,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300188804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-17 07:57:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884679324] [2024-11-17 07:57:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:51,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:57:51,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-17 07:57:51,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 07:57:51,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:51,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-17 07:57:51,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:51,980 INFO L124 PetriNetUnfolderBase]: 4004/7770 cut-off events. [2024-11-17 07:57:51,980 INFO L125 PetriNetUnfolderBase]: For 6590/7187 co-relation queries the response was YES. [2024-11-17 07:57:51,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 7770 events. 4004/7770 cut-off events. For 6590/7187 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 57870 event pairs, 2847 based on Foata normal form. 136/7374 useless extension candidates. Maximal degree in co-relation 19150. Up to 4838 conditions per place. [2024-11-17 07:57:52,026 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 146 selfloop transitions, 27 changer transitions 2/206 dead transitions. [2024-11-17 07:57:52,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 206 transitions, 1469 flow [2024-11-17 07:57:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 308 transitions. [2024-11-17 07:57:52,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-11-17 07:57:52,028 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 781 flow. Second operand 6 states and 308 transitions. [2024-11-17 07:57:52,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 206 transitions, 1469 flow [2024-11-17 07:57:52,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 206 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:52,043 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 861 flow [2024-11-17 07:57:52,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=861, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2024-11-17 07:57:52,044 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 52 predicate places. [2024-11-17 07:57:52,044 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 861 flow [2024-11-17 07:57:52,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 07:57:52,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:52,044 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-17 07:57:52,061 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 07:57:52,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:52,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:52,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash -601208539, now seen corresponding path program 1 times [2024-11-17 07:57:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:52,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049611334] [2024-11-17 07:57:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:57:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049611334] [2024-11-17 07:57:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049611334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647981385] [2024-11-17 07:57:52,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:52,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:52,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:52,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:57:52,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 861 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 07:57:52,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:52,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:57:52,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:53,041 INFO L124 PetriNetUnfolderBase]: 3434/6721 cut-off events. [2024-11-17 07:57:53,041 INFO L125 PetriNetUnfolderBase]: For 6944/7382 co-relation queries the response was YES. [2024-11-17 07:57:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16658 conditions, 6721 events. 3434/6721 cut-off events. For 6944/7382 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 49035 event pairs, 2480 based on Foata normal form. 3/6000 useless extension candidates. Maximal degree in co-relation 16567. Up to 3916 conditions per place. [2024-11-17 07:57:53,085 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 99 selfloop transitions, 18 changer transitions 1/150 dead transitions. [2024-11-17 07:57:53,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 150 transitions, 1055 flow [2024-11-17 07:57:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2024-11-17 07:57:53,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6271604938271605 [2024-11-17 07:57:53,087 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 861 flow. Second operand 5 states and 254 transitions. [2024-11-17 07:57:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 150 transitions, 1055 flow [2024-11-17 07:57:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 1006 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:53,104 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 774 flow [2024-11-17 07:57:53,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=126, PETRI_TRANSITIONS=136} [2024-11-17 07:57:53,105 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-11-17 07:57:53,105 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 774 flow [2024-11-17 07:57:53,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 07:57:53,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:53,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:53,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:57:53,107 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:53,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash -431084871, now seen corresponding path program 1 times [2024-11-17 07:57:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724094915] [2024-11-17 07:57:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:57:53,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724094915] [2024-11-17 07:57:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724094915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793091836] [2024-11-17 07:57:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:53,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:53,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:53,206 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 07:57:53,208 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 07:57:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:53,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:57:53,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:53,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793091836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:53,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-17 07:57:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800642998] [2024-11-17 07:57:53,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:53,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:57:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:57:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:57:53,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-11-17 07:57:53,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 136 transitions, 774 flow. Second operand has 19 states, 19 states have (on average 30.42105263157895) internal successors, (578), 19 states have internal predecessors, (578), 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 07:57:53,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:53,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-11-17 07:57:53,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:55,811 INFO L124 PetriNetUnfolderBase]: 7331/13087 cut-off events. [2024-11-17 07:57:55,811 INFO L125 PetriNetUnfolderBase]: For 11599/12306 co-relation queries the response was YES. [2024-11-17 07:57:55,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33193 conditions, 13087 events. 7331/13087 cut-off events. For 11599/12306 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 96651 event pairs, 1162 based on Foata normal form. 476/12720 useless extension candidates. Maximal degree in co-relation 33080. Up to 1998 conditions per place. [2024-11-17 07:57:55,912 INFO L140 encePairwiseOnDemand]: 62/81 looper letters, 281 selfloop transitions, 78 changer transitions 0/386 dead transitions. [2024-11-17 07:57:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 386 transitions, 2585 flow [2024-11-17 07:57:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:57:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:57:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 793 transitions. [2024-11-17 07:57:55,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5152696556205328 [2024-11-17 07:57:55,918 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 774 flow. Second operand 19 states and 793 transitions. [2024-11-17 07:57:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 386 transitions, 2585 flow [2024-11-17 07:57:55,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 386 transitions, 2534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:55,949 INFO L231 Difference]: Finished difference. Result has 144 places, 173 transitions, 1278 flow [2024-11-17 07:57:55,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1278, PETRI_PLACES=144, PETRI_TRANSITIONS=173} [2024-11-17 07:57:55,950 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 71 predicate places. [2024-11-17 07:57:55,950 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 173 transitions, 1278 flow [2024-11-17 07:57:55,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 30.42105263157895) internal successors, (578), 19 states have internal predecessors, (578), 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 07:57:55,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:55,951 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:55,991 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 07:57:56,151 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,SelfDestructingSolverStorable11 [2024-11-17 07:57:56,152 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:56,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 403776516, now seen corresponding path program 1 times [2024-11-17 07:57:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045247832] [2024-11-17 07:57:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045247832] [2024-11-17 07:57:56,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045247832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:56,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604867942] [2024-11-17 07:57:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:56,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:56,429 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 07:57:56,430 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 07:57:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:56,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 07:57:56,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:56,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604867942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:56,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:56,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-17 07:57:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356782214] [2024-11-17 07:57:56,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:56,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:57:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:57:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:57:57,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-17 07:57:57,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 173 transitions, 1278 flow. Second operand has 22 states, 22 states have (on average 32.36363636363637) internal successors, (712), 22 states have internal predecessors, (712), 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 07:57:57,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:57,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-17 07:57:57,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:58,752 INFO L124 PetriNetUnfolderBase]: 6118/12271 cut-off events. [2024-11-17 07:57:58,752 INFO L125 PetriNetUnfolderBase]: For 18412/19083 co-relation queries the response was YES. [2024-11-17 07:57:58,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32681 conditions, 12271 events. 6118/12271 cut-off events. For 18412/19083 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 100485 event pairs, 4737 based on Foata normal form. 87/11289 useless extension candidates. Maximal degree in co-relation 32572. Up to 4539 conditions per place. [2024-11-17 07:57:58,875 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 68 selfloop transitions, 76 changer transitions 0/176 dead transitions. [2024-11-17 07:57:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 176 transitions, 1453 flow [2024-11-17 07:57:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 07:57:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 07:57:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 533 transitions. [2024-11-17 07:57:58,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47001763668430335 [2024-11-17 07:57:58,878 INFO L175 Difference]: Start difference. First operand has 144 places, 173 transitions, 1278 flow. Second operand 14 states and 533 transitions. [2024-11-17 07:57:58,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 176 transitions, 1453 flow [2024-11-17 07:57:58,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 176 transitions, 1325 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-17 07:57:58,925 INFO L231 Difference]: Finished difference. Result has 151 places, 153 transitions, 1106 flow [2024-11-17 07:57:58,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1106, PETRI_PLACES=151, PETRI_TRANSITIONS=153} [2024-11-17 07:57:58,925 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 78 predicate places. [2024-11-17 07:57:58,926 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 1106 flow [2024-11-17 07:57:58,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.36363636363637) internal successors, (712), 22 states have internal predecessors, (712), 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 07:57:58,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:58,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:58,939 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 07:57:59,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:59,129 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:57:59,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash 661131405, now seen corresponding path program 1 times [2024-11-17 07:57:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:59,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737723402] [2024-11-17 07:57:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:57:59,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737723402] [2024-11-17 07:57:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737723402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381295870] [2024-11-17 07:57:59,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:59,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:59,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-17 07:57:59,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 153 transitions, 1106 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 07:57:59,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:59,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-17 07:57:59,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:00,520 INFO L124 PetriNetUnfolderBase]: 6906/12567 cut-off events. [2024-11-17 07:58:00,520 INFO L125 PetriNetUnfolderBase]: For 11034/11812 co-relation queries the response was YES. [2024-11-17 07:58:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32011 conditions, 12567 events. 6906/12567 cut-off events. For 11034/11812 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 97452 event pairs, 5369 based on Foata normal form. 120/11960 useless extension candidates. Maximal degree in co-relation 31899. Up to 9256 conditions per place. [2024-11-17 07:58:00,586 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 89 selfloop transitions, 17 changer transitions 31/170 dead transitions. [2024-11-17 07:58:00,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 170 transitions, 1450 flow [2024-11-17 07:58:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:58:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:58:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2024-11-17 07:58:00,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5946502057613169 [2024-11-17 07:58:00,588 INFO L175 Difference]: Start difference. First operand has 151 places, 153 transitions, 1106 flow. Second operand 6 states and 289 transitions. [2024-11-17 07:58:00,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 170 transitions, 1450 flow [2024-11-17 07:58:00,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 1306 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-17 07:58:00,637 INFO L231 Difference]: Finished difference. Result has 146 places, 139 transitions, 900 flow [2024-11-17 07:58:00,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=900, PETRI_PLACES=146, PETRI_TRANSITIONS=139} [2024-11-17 07:58:00,638 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 73 predicate places. [2024-11-17 07:58:00,639 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 139 transitions, 900 flow [2024-11-17 07:58:00,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 07:58:00,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:00,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:00,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:58:00,639 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:00,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash 281487623, now seen corresponding path program 1 times [2024-11-17 07:58:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549784034] [2024-11-17 07:58:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549784034] [2024-11-17 07:58:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549784034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678299439] [2024-11-17 07:58:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:00,708 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 07:58:00,709 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 07:58:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:00,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:58:00,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:00,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:00,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678299439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:00,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:58:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053174791] [2024-11-17 07:58:00,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:00,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:58:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:58:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:58:00,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:58:00,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 139 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 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 07:58:00,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:00,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:58:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:02,917 INFO L124 PetriNetUnfolderBase]: 12412/21676 cut-off events. [2024-11-17 07:58:02,918 INFO L125 PetriNetUnfolderBase]: For 18209/19938 co-relation queries the response was YES. [2024-11-17 07:58:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55209 conditions, 21676 events. 12412/21676 cut-off events. For 18209/19938 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 173606 event pairs, 2079 based on Foata normal form. 653/21808 useless extension candidates. Maximal degree in co-relation 55109. Up to 4333 conditions per place. [2024-11-17 07:58:03,049 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 258 selfloop transitions, 15 changer transitions 0/317 dead transitions. [2024-11-17 07:58:03,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 317 transitions, 2176 flow [2024-11-17 07:58:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:58:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:58:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 526 transitions. [2024-11-17 07:58:03,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6493827160493827 [2024-11-17 07:58:03,051 INFO L175 Difference]: Start difference. First operand has 146 places, 139 transitions, 900 flow. Second operand 10 states and 526 transitions. [2024-11-17 07:58:03,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 317 transitions, 2176 flow [2024-11-17 07:58:03,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 317 transitions, 2045 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-11-17 07:58:03,125 INFO L231 Difference]: Finished difference. Result has 141 places, 147 transitions, 925 flow [2024-11-17 07:58:03,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=925, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2024-11-17 07:58:03,126 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 68 predicate places. [2024-11-17 07:58:03,126 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 925 flow [2024-11-17 07:58:03,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 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 07:58:03,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:03,126 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:03,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:03,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:03,327 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:03,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash 281487622, now seen corresponding path program 1 times [2024-11-17 07:58:03,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640724931] [2024-11-17 07:58:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:03,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:03,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640724931] [2024-11-17 07:58:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640724931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:03,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197296323] [2024-11-17 07:58:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:03,410 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 07:58:03,411 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 07:58:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:03,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:58:03,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:03,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197296323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:03,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-17 07:58:03,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863348214] [2024-11-17 07:58:03,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:03,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:58:03,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-17 07:58:03,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 925 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 07:58:03,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:03,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-17 07:58:03,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:05,218 INFO L124 PetriNetUnfolderBase]: 12022/20848 cut-off events. [2024-11-17 07:58:05,218 INFO L125 PetriNetUnfolderBase]: For 27731/28978 co-relation queries the response was YES. [2024-11-17 07:58:05,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56199 conditions, 20848 events. 12022/20848 cut-off events. For 27731/28978 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 162773 event pairs, 2051 based on Foata normal form. 1550/21039 useless extension candidates. Maximal degree in co-relation 56106. Up to 7539 conditions per place. [2024-11-17 07:58:05,366 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 130 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-17 07:58:05,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 184 transitions, 1330 flow [2024-11-17 07:58:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-17 07:58:05,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-17 07:58:05,367 INFO L175 Difference]: Start difference. First operand has 141 places, 147 transitions, 925 flow. Second operand 4 states and 207 transitions. [2024-11-17 07:58:05,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 184 transitions, 1330 flow [2024-11-17 07:58:05,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 184 transitions, 1315 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:05,414 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 897 flow [2024-11-17 07:58:05,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2024-11-17 07:58:05,415 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 64 predicate places. [2024-11-17 07:58:05,415 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 897 flow [2024-11-17 07:58:05,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 07:58:05,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:05,416 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:58:05,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:05,616 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,SelfDestructingSolverStorable15 [2024-11-17 07:58:05,617 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:05,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash -46041245, now seen corresponding path program 2 times [2024-11-17 07:58:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:05,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042337539] [2024-11-17 07:58:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:05,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:06,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042337539] [2024-11-17 07:58:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042337539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726843535] [2024-11-17 07:58:06,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:06,029 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 07:58:06,030 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 07:58:06,103 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:58:06,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:06,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:58:06,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-17 07:58:06,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-17 07:58:06,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726843535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:06,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:06,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-17 07:58:06,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954706390] [2024-11-17 07:58:06,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:06,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:58:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:58:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:58:06,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-17 07:58:06,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 897 flow. Second operand has 22 states, 22 states have (on average 32.27272727272727) internal successors, (710), 22 states have internal predecessors, (710), 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 07:58:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:06,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-17 07:58:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:08,786 INFO L124 PetriNetUnfolderBase]: 12106/22403 cut-off events. [2024-11-17 07:58:08,787 INFO L125 PetriNetUnfolderBase]: For 35303/36051 co-relation queries the response was YES. [2024-11-17 07:58:08,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61740 conditions, 22403 events. 12106/22403 cut-off events. For 35303/36051 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 183980 event pairs, 8830 based on Foata normal form. 128/20831 useless extension candidates. Maximal degree in co-relation 61642. Up to 9998 conditions per place. [2024-11-17 07:58:08,992 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 72 selfloop transitions, 81 changer transitions 0/185 dead transitions. [2024-11-17 07:58:08,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 1430 flow [2024-11-17 07:58:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:58:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:58:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 760 transitions. [2024-11-17 07:58:08,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4467960023515579 [2024-11-17 07:58:08,994 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 897 flow. Second operand 21 states and 760 transitions. [2024-11-17 07:58:08,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 1430 flow [2024-11-17 07:58:09,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 1352 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-17 07:58:09,046 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 1080 flow [2024-11-17 07:58:09,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1080, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2024-11-17 07:58:09,047 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2024-11-17 07:58:09,047 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 1080 flow [2024-11-17 07:58:09,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.27272727272727) internal successors, (710), 22 states have internal predecessors, (710), 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 07:58:09,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:09,048 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:09,061 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 07:58:09,248 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,SelfDestructingSolverStorable16 [2024-11-17 07:58:09,248 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:09,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1077147996, now seen corresponding path program 1 times [2024-11-17 07:58:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062562429] [2024-11-17 07:58:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062562429] [2024-11-17 07:58:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062562429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903612479] [2024-11-17 07:58:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:09,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:09,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:09,336 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 07:58:09,338 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 07:58:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:09,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:58:09,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:09,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903612479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:09,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:58:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275346976] [2024-11-17 07:58:09,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:09,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:58:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:58:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:58:09,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-17 07:58:09,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 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 07:58:09,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:09,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-17 07:58:09,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:13,563 INFO L124 PetriNetUnfolderBase]: 20670/39294 cut-off events. [2024-11-17 07:58:13,564 INFO L125 PetriNetUnfolderBase]: For 42928/44110 co-relation queries the response was YES. [2024-11-17 07:58:13,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102227 conditions, 39294 events. 20670/39294 cut-off events. For 42928/44110 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 352806 event pairs, 3934 based on Foata normal form. 1622/39336 useless extension candidates. Maximal degree in co-relation 102124. Up to 13413 conditions per place. [2024-11-17 07:58:13,961 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 271 selfloop transitions, 17 changer transitions 0/338 dead transitions. [2024-11-17 07:58:13,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 338 transitions, 2498 flow [2024-11-17 07:58:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:58:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:58:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 548 transitions. [2024-11-17 07:58:13,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6765432098765433 [2024-11-17 07:58:13,963 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 1080 flow. Second operand 10 states and 548 transitions. [2024-11-17 07:58:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 338 transitions, 2498 flow [2024-11-17 07:58:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 338 transitions, 2303 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-17 07:58:14,037 INFO L231 Difference]: Finished difference. Result has 150 places, 162 transitions, 979 flow [2024-11-17 07:58:14,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=979, PETRI_PLACES=150, PETRI_TRANSITIONS=162} [2024-11-17 07:58:14,038 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 77 predicate places. [2024-11-17 07:58:14,038 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 162 transitions, 979 flow [2024-11-17 07:58:14,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 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 07:58:14,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:14,039 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:14,052 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 07:58:14,239 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,SelfDestructingSolverStorable17 [2024-11-17 07:58:14,239 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:14,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1787424042, now seen corresponding path program 1 times [2024-11-17 07:58:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398509624] [2024-11-17 07:58:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:58:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398509624] [2024-11-17 07:58:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398509624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:14,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:14,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:58:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783148638] [2024-11-17 07:58:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:14,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:14,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:58:14,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 162 transitions, 979 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 07:58:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:58:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:19,335 INFO L124 PetriNetUnfolderBase]: 25173/44733 cut-off events. [2024-11-17 07:58:19,335 INFO L125 PetriNetUnfolderBase]: For 77879/79777 co-relation queries the response was YES. [2024-11-17 07:58:19,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130514 conditions, 44733 events. 25173/44733 cut-off events. For 77879/79777 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 383210 event pairs, 7368 based on Foata normal form. 1225/44220 useless extension candidates. Maximal degree in co-relation 130423. Up to 15990 conditions per place. [2024-11-17 07:58:19,857 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 165 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2024-11-17 07:58:19,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 222 transitions, 1661 flow [2024-11-17 07:58:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-17 07:58:19,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-17 07:58:19,858 INFO L175 Difference]: Start difference. First operand has 150 places, 162 transitions, 979 flow. Second operand 4 states and 210 transitions. [2024-11-17 07:58:19,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 222 transitions, 1661 flow [2024-11-17 07:58:20,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 222 transitions, 1612 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-17 07:58:20,139 INFO L231 Difference]: Finished difference. Result has 149 places, 162 transitions, 987 flow [2024-11-17 07:58:20,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=149, PETRI_TRANSITIONS=162} [2024-11-17 07:58:20,140 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2024-11-17 07:58:20,140 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 162 transitions, 987 flow [2024-11-17 07:58:20,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 07:58:20,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:20,140 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:20,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 07:58:20,141 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:20,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 988947135, now seen corresponding path program 1 times [2024-11-17 07:58:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:20,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329945607] [2024-11-17 07:58:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:58:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329945607] [2024-11-17 07:58:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329945607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944819574] [2024-11-17 07:58:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:20,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:20,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:20,221 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 07:58:20,223 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 07:58:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:20,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:58:20,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:58:20,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:58:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944819574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:20,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-17 07:58:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614520558] [2024-11-17 07:58:20,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:20,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:58:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:58:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:58:20,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-11-17 07:58:20,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 162 transitions, 987 flow. Second operand has 19 states, 19 states have (on average 29.63157894736842) internal successors, (563), 19 states have internal predecessors, (563), 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 07:58:20,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-11-17 07:58:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:26,261 INFO L124 PetriNetUnfolderBase]: 32862/50587 cut-off events. [2024-11-17 07:58:26,261 INFO L125 PetriNetUnfolderBase]: For 132386/133301 co-relation queries the response was YES. [2024-11-17 07:58:26,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165309 conditions, 50587 events. 32862/50587 cut-off events. For 132386/133301 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 374788 event pairs, 3186 based on Foata normal form. 564/46739 useless extension candidates. Maximal degree in co-relation 165217. Up to 9508 conditions per place. [2024-11-17 07:58:26,843 INFO L140 encePairwiseOnDemand]: 62/81 looper letters, 334 selfloop transitions, 73 changer transitions 14/446 dead transitions. [2024-11-17 07:58:26,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 446 transitions, 3609 flow [2024-11-17 07:58:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:58:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:58:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 700 transitions. [2024-11-17 07:58:26,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4548408057179987 [2024-11-17 07:58:26,845 INFO L175 Difference]: Start difference. First operand has 149 places, 162 transitions, 987 flow. Second operand 19 states and 700 transitions. [2024-11-17 07:58:26,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 446 transitions, 3609 flow [2024-11-17 07:58:27,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 446 transitions, 3504 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:27,027 INFO L231 Difference]: Finished difference. Result has 165 places, 167 transitions, 1139 flow [2024-11-17 07:58:27,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1139, PETRI_PLACES=165, PETRI_TRANSITIONS=167} [2024-11-17 07:58:27,028 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 92 predicate places. [2024-11-17 07:58:27,028 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 167 transitions, 1139 flow [2024-11-17 07:58:27,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.63157894736842) internal successors, (563), 19 states have internal predecessors, (563), 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 07:58:27,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:27,028 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:27,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 07:58:27,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:27,229 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:27,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash -144516423, now seen corresponding path program 2 times [2024-11-17 07:58:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145078580] [2024-11-17 07:58:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-17 07:58:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145078580] [2024-11-17 07:58:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145078580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047390368] [2024-11-17 07:58:27,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:27,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:27,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:27,288 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 07:58:27,290 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 07:58:27,383 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:58:27,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:27,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:58:27,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-17 07:58:27,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-17 07:58:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047390368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:27,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-17 07:58:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949490812] [2024-11-17 07:58:27,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:27,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:27,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:27,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-17 07:58:27,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 167 transitions, 1139 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:58:27,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:27,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-17 07:58:27,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:33,480 INFO L124 PetriNetUnfolderBase]: 31334/57526 cut-off events. [2024-11-17 07:58:33,481 INFO L125 PetriNetUnfolderBase]: For 91245/92062 co-relation queries the response was YES. [2024-11-17 07:58:33,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162631 conditions, 57526 events. 31334/57526 cut-off events. For 91245/92062 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 517253 event pairs, 11215 based on Foata normal form. 643/54087 useless extension candidates. Maximal degree in co-relation 162530. Up to 21406 conditions per place. [2024-11-17 07:58:33,953 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 121 selfloop transitions, 7 changer transitions 33/200 dead transitions. [2024-11-17 07:58:33,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 200 transitions, 1604 flow [2024-11-17 07:58:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-17 07:58:33,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6234567901234568 [2024-11-17 07:58:33,955 INFO L175 Difference]: Start difference. First operand has 165 places, 167 transitions, 1139 flow. Second operand 4 states and 202 transitions. [2024-11-17 07:58:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 200 transitions, 1604 flow [2024-11-17 07:58:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 200 transitions, 1491 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-17 07:58:34,191 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 889 flow [2024-11-17 07:58:34,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=889, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2024-11-17 07:58:34,192 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 83 predicate places. [2024-11-17 07:58:34,192 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 889 flow [2024-11-17 07:58:34,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 07:58:34,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:34,192 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:34,204 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 07:58:34,393 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,SelfDestructingSolverStorable20 [2024-11-17 07:58:34,393 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:34,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 659710998, now seen corresponding path program 2 times [2024-11-17 07:58:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:34,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507727389] [2024-11-17 07:58:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-17 07:58:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507727389] [2024-11-17 07:58:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507727389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996765512] [2024-11-17 07:58:34,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:58:34,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:34,547 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 07:58:34,548 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 07:58:34,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:58:34,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:34,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:58:34,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-17 07:58:34,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-17 07:58:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996765512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:34,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-17 07:58:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190322097] [2024-11-17 07:58:34,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:58:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:34,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:58:34,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:58:34,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 81 [2024-11-17 07:58:34,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 889 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 07:58:34,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:34,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 81 [2024-11-17 07:58:34,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:37,985 INFO L124 PetriNetUnfolderBase]: 15551/27505 cut-off events. [2024-11-17 07:58:37,985 INFO L125 PetriNetUnfolderBase]: For 76122/76594 co-relation queries the response was YES. [2024-11-17 07:58:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82779 conditions, 27505 events. 15551/27505 cut-off events. For 76122/76594 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 224625 event pairs, 6726 based on Foata normal form. 364/26688 useless extension candidates. Maximal degree in co-relation 82682. Up to 6636 conditions per place. [2024-11-17 07:58:38,247 INFO L140 encePairwiseOnDemand]: 65/81 looper letters, 135 selfloop transitions, 56 changer transitions 4/224 dead transitions. [2024-11-17 07:58:38,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 224 transitions, 1730 flow [2024-11-17 07:58:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:58:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:58:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 583 transitions. [2024-11-17 07:58:38,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4498456790123457 [2024-11-17 07:58:38,249 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 889 flow. Second operand 16 states and 583 transitions. [2024-11-17 07:58:38,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 224 transitions, 1730 flow [2024-11-17 07:58:38,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 224 transitions, 1550 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-17 07:58:38,325 INFO L231 Difference]: Finished difference. Result has 146 places, 148 transitions, 904 flow [2024-11-17 07:58:38,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=904, PETRI_PLACES=146, PETRI_TRANSITIONS=148} [2024-11-17 07:58:38,326 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 73 predicate places. [2024-11-17 07:58:38,326 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 904 flow [2024-11-17 07:58:38,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 07:58:38,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:38,327 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:38,339 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 07:58:38,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-17 07:58:38,527 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-17 07:58:38,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:38,528 INFO L85 PathProgramCache]: Analyzing trace with hash 787333208, now seen corresponding path program 1 times [2024-11-17 07:58:38,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:38,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297548276] [2024-11-17 07:58:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297548276] [2024-11-17 07:58:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297548276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950471399] [2024-11-17 07:58:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:38,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:38,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:38,636 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 07:58:38,638 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 07:58:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:38,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:58:38,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:38,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-17 07:58:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950471399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:38,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:58:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012771267] [2024-11-17 07:58:38,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:38,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:58:38,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:58:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:58:38,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-17 07:58:38,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 904 flow. Second operand has 12 states, 12 states have (on average 40.166666666666664) internal successors, (482), 12 states have internal predecessors, (482), 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 07:58:38,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:38,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-17 07:58:38,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand