./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.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/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:51:31,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:51:31,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:51:31,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:51:31,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:51:31,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:51:31,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:51:31,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:51:31,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:51:31,812 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:51:31,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:51:31,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:51:31,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:51:31,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:51:31,816 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:51:31,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:51:31,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:51:31,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:51:31,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:51:31,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:51:31,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:51:31,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:51:31,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:51:31,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:51:31,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:51:31,820 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:51:31,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:51:31,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:51:31,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:51:31,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:51:31,822 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:51:31,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:51:31,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:51:31,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:51:31,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:51:31,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:51:31,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:51:31,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:51:31,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:51:31,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:51:31,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:51:31,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:51:31,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:51:31,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:51:31,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-17 07:51:32,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:51:32,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:51:32,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:51:32,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:51:32,104 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:51:32,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-17 07:51:33,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:51:33,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:51:33,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-17 07:51:33,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b3cb4f2/1cdd52a8995941dab15311bf0b206f97/FLAG5b1e56d5b [2024-11-17 07:51:34,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b3cb4f2/1cdd52a8995941dab15311bf0b206f97 [2024-11-17 07:51:34,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:51:34,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:51:34,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:51:34,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:51:34,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:51:34,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a71471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34, skipping insertion in model container [2024-11-17 07:51:34,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:51:34,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:51:34,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:51:34,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:51:34,471 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:51:34,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34 WrapperNode [2024-11-17 07:51:34,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:51:34,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:51:34,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:51:34,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:51:34,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,531 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 254 [2024-11-17 07:51:34,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:51:34,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:51:34,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:51:34,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:51:34,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,566 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 07:51:34,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,574 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:51:34,582 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:51:34,582 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:51:34,582 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:51:34,583 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (1/1) ... [2024-11-17 07:51:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:51:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:34,628 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 07:51:34,630 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 07:51:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:51:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:51:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:51:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:51:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:51:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:51:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:51:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:51:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:51:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:51:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:51:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:51:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:51:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:51:34,674 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 07:51:34,781 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:51:34,783 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:51:35,205 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:51:35,206 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:51:35,449 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:51:35,450 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:51:35,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:51:35 BoogieIcfgContainer [2024-11-17 07:51:35,450 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:51:35,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:51:35,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:51:35,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:51:35,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:51:34" (1/3) ... [2024-11-17 07:51:35,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de603da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:51:35, skipping insertion in model container [2024-11-17 07:51:35,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:34" (2/3) ... [2024-11-17 07:51:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de603da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:51:35, skipping insertion in model container [2024-11-17 07:51:35,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:51:35" (3/3) ... [2024-11-17 07:51:35,461 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-17 07:51:35,478 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:51:35,479 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-17 07:51:35,479 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:51:35,547 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:51:35,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 84 transitions, 182 flow [2024-11-17 07:51:35,630 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-17 07:51:35,631 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:51:35,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 12/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-17 07:51:35,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 84 transitions, 182 flow [2024-11-17 07:51:35,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 81 transitions, 174 flow [2024-11-17 07:51:35,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:51:35,660 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;@3ce51660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:51:35,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-17 07:51:35,666 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:51:35,666 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:51:35,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:51:35,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:35,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:51:35,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:35,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 21515999, now seen corresponding path program 1 times [2024-11-17 07:51:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525933982] [2024-11-17 07:51:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:35,993 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 07:51:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525933982] [2024-11-17 07:51:35,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525933982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:35,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:35,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:51:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254836506] [2024-11-17 07:51:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:36,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:36,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:36,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:51:36,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:36,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:36,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:36,440 INFO L124 PetriNetUnfolderBase]: 596/1431 cut-off events. [2024-11-17 07:51:36,440 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-17 07:51:36,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 1431 events. 596/1431 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9445 event pairs, 390 based on Foata normal form. 5/1112 useless extension candidates. Maximal degree in co-relation 2283. Up to 912 conditions per place. [2024-11-17 07:51:36,458 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 38 selfloop transitions, 4 changer transitions 2/79 dead transitions. [2024-11-17 07:51:36,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 256 flow [2024-11-17 07:51:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-17 07:51:36,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-17 07:51:36,477 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 174 flow. Second operand 4 states and 203 transitions. [2024-11-17 07:51:36,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 256 flow [2024-11-17 07:51:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:36,487 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 180 flow [2024-11-17 07:51:36,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-11-17 07:51:36,494 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-17 07:51:36,496 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 180 flow [2024-11-17 07:51:36,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 07:51:36,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:36,497 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:51:36,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:51:36,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:36,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:36,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1977333902, now seen corresponding path program 1 times [2024-11-17 07:51:36,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:36,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443219652] [2024-11-17 07:51:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:36,671 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 07:51:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:36,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443219652] [2024-11-17 07:51:36,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443219652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:36,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145766158] [2024-11-17 07:51:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:36,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:36,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:36,674 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 07:51:36,676 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 07:51:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:36,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:51:36,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:36,830 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 07:51:36,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145766158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:36,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:51:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372514673] [2024-11-17 07:51:36,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:36,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:51:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:36,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:51:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:36,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:36,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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 07:51:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:36,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:36,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:37,109 INFO L124 PetriNetUnfolderBase]: 596/1428 cut-off events. [2024-11-17 07:51:37,110 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 07:51:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1428 events. 596/1428 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9413 event pairs, 390 based on Foata normal form. 1/1105 useless extension candidates. Maximal degree in co-relation 2338. Up to 906 conditions per place. [2024-11-17 07:51:37,119 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 34 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-17 07:51:37,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 258 flow [2024-11-17 07:51:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:51:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:51:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-11-17 07:51:37,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-17 07:51:37,122 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 180 flow. Second operand 6 states and 270 transitions. [2024-11-17 07:51:37,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 258 flow [2024-11-17 07:51:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:51:37,125 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 187 flow [2024-11-17 07:51:37,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-17 07:51:37,126 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-11-17 07:51:37,126 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 187 flow [2024-11-17 07:51:37,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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 07:51:37,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:37,127 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:51:37,141 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 07:51:37,327 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 07:51:37,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:37,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1167809438, now seen corresponding path program 1 times [2024-11-17 07:51:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:37,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290674738] [2024-11-17 07:51:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:37,440 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 07:51:37,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290674738] [2024-11-17 07:51:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290674738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979374008] [2024-11-17 07:51:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:37,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:37,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:37,443 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 07:51:37,445 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 07:51:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:37,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:51:37,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:37,537 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 07:51:37,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:51:37,584 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 07:51:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979374008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:51:37,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:51:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:51:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124843933] [2024-11-17 07:51:37,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:51:37,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:51:37,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:51:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:51:37,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:37,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 187 flow. Second operand has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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 07:51:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:37,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:37,913 INFO L124 PetriNetUnfolderBase]: 599/1446 cut-off events. [2024-11-17 07:51:37,913 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-17 07:51:37,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1446 events. 599/1446 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9596 event pairs, 390 based on Foata normal form. 3/1126 useless extension candidates. Maximal degree in co-relation 2339. Up to 913 conditions per place. [2024-11-17 07:51:37,922 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-17 07:51:37,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 341 flow [2024-11-17 07:51:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:51:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:51:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 433 transitions. [2024-11-17 07:51:37,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154761904761904 [2024-11-17 07:51:37,925 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 187 flow. Second operand 10 states and 433 transitions. [2024-11-17 07:51:37,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 341 flow [2024-11-17 07:51:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 311 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:37,931 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 255 flow [2024-11-17 07:51:37,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=255, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-11-17 07:51:37,932 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-17 07:51:37,933 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 255 flow [2024-11-17 07:51:37,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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 07:51:37,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:37,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:37,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:38,135 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 07:51:38,136 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash 85045758, now seen corresponding path program 1 times [2024-11-17 07:51:38,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:38,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014511221] [2024-11-17 07:51:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:38,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:38,211 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 07:51:38,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:38,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014511221] [2024-11-17 07:51:38,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014511221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:38,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:38,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:51:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518538693] [2024-11-17 07:51:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:38,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:38,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:38,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 255 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 07:51:38,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:38,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:38,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:38,594 INFO L124 PetriNetUnfolderBase]: 1243/2854 cut-off events. [2024-11-17 07:51:38,594 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-17 07:51:38,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2854 events. 1243/2854 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21324 event pairs, 486 based on Foata normal form. 28/2276 useless extension candidates. Maximal degree in co-relation 4786. Up to 1042 conditions per place. [2024-11-17 07:51:38,614 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 96 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-17 07:51:38,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 552 flow [2024-11-17 07:51:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-11-17 07:51:38,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7172619047619048 [2024-11-17 07:51:38,616 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 255 flow. Second operand 4 states and 241 transitions. [2024-11-17 07:51:38,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 552 flow [2024-11-17 07:51:38,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 541 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:38,623 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 266 flow [2024-11-17 07:51:38,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-17 07:51:38,626 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2024-11-17 07:51:38,626 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 266 flow [2024-11-17 07:51:38,626 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 07:51:38,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:38,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:38,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:51:38,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:38,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -190428694, now seen corresponding path program 1 times [2024-11-17 07:51:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68988489] [2024-11-17 07:51:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:38,714 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 07:51:38,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68988489] [2024-11-17 07:51:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68988489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:38,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:38,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:51:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102936505] [2024-11-17 07:51:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:38,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:38,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:38,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:38,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 07:51:38,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:38,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:39,215 INFO L124 PetriNetUnfolderBase]: 2395/5275 cut-off events. [2024-11-17 07:51:39,215 INFO L125 PetriNetUnfolderBase]: For 524/600 co-relation queries the response was YES. [2024-11-17 07:51:39,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 5275 events. 2395/5275 cut-off events. For 524/600 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42813 event pairs, 1004 based on Foata normal form. 52/4370 useless extension candidates. Maximal degree in co-relation 9277. Up to 2071 conditions per place. [2024-11-17 07:51:39,251 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 99 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-11-17 07:51:39,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 598 flow [2024-11-17 07:51:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-11-17 07:51:39,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-17 07:51:39,253 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 266 flow. Second operand 4 states and 238 transitions. [2024-11-17 07:51:39,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 598 flow [2024-11-17 07:51:39,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:51:39,257 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 286 flow [2024-11-17 07:51:39,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-11-17 07:51:39,258 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-17 07:51:39,259 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 286 flow [2024-11-17 07:51:39,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 07:51:39,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:39,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:39,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:51:39,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:39,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -432944993, now seen corresponding path program 1 times [2024-11-17 07:51:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:39,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998371839] [2024-11-17 07:51:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:39,308 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 07:51:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998371839] [2024-11-17 07:51:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998371839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:39,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:51:39,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385106089] [2024-11-17 07:51:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:39,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:39,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-17 07:51:39,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 286 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 07:51:39,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:39,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-17 07:51:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:39,762 INFO L124 PetriNetUnfolderBase]: 1921/4119 cut-off events. [2024-11-17 07:51:39,763 INFO L125 PetriNetUnfolderBase]: For 651/719 co-relation queries the response was YES. [2024-11-17 07:51:39,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 4119 events. 1921/4119 cut-off events. For 651/719 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 31082 event pairs, 764 based on Foata normal form. 0/3583 useless extension candidates. Maximal degree in co-relation 7832. Up to 1639 conditions per place. [2024-11-17 07:51:39,789 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 108 selfloop transitions, 4 changer transitions 6/154 dead transitions. [2024-11-17 07:51:39,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 699 flow [2024-11-17 07:51:39,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2024-11-17 07:51:39,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7119047619047619 [2024-11-17 07:51:39,791 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 286 flow. Second operand 5 states and 299 transitions. [2024-11-17 07:51:39,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 699 flow [2024-11-17 07:51:39,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:51:39,797 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 309 flow [2024-11-17 07:51:39,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-17 07:51:39,799 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2024-11-17 07:51:39,800 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 309 flow [2024-11-17 07:51:39,801 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 07:51:39,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:39,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:39,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:51:39,801 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:39,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash -502916139, now seen corresponding path program 1 times [2024-11-17 07:51:39,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805906842] [2024-11-17 07:51:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:39,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:51:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:39,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805906842] [2024-11-17 07:51:39,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805906842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:39,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:39,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:51:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727286395] [2024-11-17 07:51:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:39,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:51:39,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:51:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:51:39,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-17 07:51:39,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:39,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-17 07:51:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:40,234 INFO L124 PetriNetUnfolderBase]: 1832/4364 cut-off events. [2024-11-17 07:51:40,234 INFO L125 PetriNetUnfolderBase]: For 1282/1316 co-relation queries the response was YES. [2024-11-17 07:51:40,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8460 conditions, 4364 events. 1832/4364 cut-off events. For 1282/1316 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35430 event pairs, 1375 based on Foata normal form. 1/3731 useless extension candidates. Maximal degree in co-relation 8423. Up to 2869 conditions per place. [2024-11-17 07:51:40,267 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 53 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-17 07:51:40,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 415 flow [2024-11-17 07:51:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:51:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:51:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-17 07:51:40,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-11-17 07:51:40,269 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 309 flow. Second operand 3 states and 158 transitions. [2024-11-17 07:51:40,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 415 flow [2024-11-17 07:51:40,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:51:40,274 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 313 flow [2024-11-17 07:51:40,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2024-11-17 07:51:40,275 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:40,276 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 313 flow [2024-11-17 07:51:40,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:40,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:40,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:40,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:51:40,277 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:40,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash 7153414, now seen corresponding path program 1 times [2024-11-17 07:51:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425009834] [2024-11-17 07:51:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:51:40,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425009834] [2024-11-17 07:51:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425009834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932354193] [2024-11-17 07:51:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:40,389 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 07:51:40,392 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 07:51:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:40,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:51:40,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:51:40,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:51:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:51:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932354193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:51:40,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:51:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:51:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139054194] [2024-11-17 07:51:40,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:51:40,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:51:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:51:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:51:40,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:40,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 313 flow. Second operand has 10 states, 10 states have (on average 38.8) internal successors, (388), 10 states have internal predecessors, (388), 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 07:51:40,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:40,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:40,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:41,104 INFO L124 PetriNetUnfolderBase]: 1830/4360 cut-off events. [2024-11-17 07:51:41,104 INFO L125 PetriNetUnfolderBase]: For 1290/1324 co-relation queries the response was YES. [2024-11-17 07:51:41,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8458 conditions, 4360 events. 1830/4360 cut-off events. For 1290/1324 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35284 event pairs, 1375 based on Foata normal form. 2/3728 useless extension candidates. Maximal degree in co-relation 8426. Up to 2859 conditions per place. [2024-11-17 07:51:41,127 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 44 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-11-17 07:51:41,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 411 flow [2024-11-17 07:51:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:51:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:51:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2024-11-17 07:51:41,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5187074829931972 [2024-11-17 07:51:41,129 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 313 flow. Second operand 7 states and 305 transitions. [2024-11-17 07:51:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 411 flow [2024-11-17 07:51:41,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 88 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:41,133 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 331 flow [2024-11-17 07:51:41,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-17 07:51:41,134 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-11-17 07:51:41,134 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 331 flow [2024-11-17 07:51:41,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.8) internal successors, (388), 10 states have internal predecessors, (388), 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 07:51:41,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:41,135 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:51:41,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:41,335 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 07:51:41,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:41,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1533328689, now seen corresponding path program 2 times [2024-11-17 07:51:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380046260] [2024-11-17 07:51:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:51:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:41,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380046260] [2024-11-17 07:51:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380046260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:41,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485438478] [2024-11-17 07:51:41,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:51:41,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:41,499 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 07:51:41,501 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 07:51:41,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:51:41,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:51:41,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:51:41,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:41,637 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 07:51:41,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:51:41,684 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 07:51:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485438478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:51:41,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:51:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 12 [2024-11-17 07:51:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819419550] [2024-11-17 07:51:41,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:51:41,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 07:51:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 07:51:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-17 07:51:41,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:41,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 331 flow. Second operand has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 13 states have internal predecessors, (502), 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 07:51:41,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:41,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:41,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:42,257 INFO L124 PetriNetUnfolderBase]: 1828/4350 cut-off events. [2024-11-17 07:51:42,258 INFO L125 PetriNetUnfolderBase]: For 1298/1332 co-relation queries the response was YES. [2024-11-17 07:51:42,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 4350 events. 1828/4350 cut-off events. For 1298/1332 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35278 event pairs, 1375 based on Foata normal form. 1/3717 useless extension candidates. Maximal degree in co-relation 8417. Up to 2853 conditions per place. [2024-11-17 07:51:42,286 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 40 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-11-17 07:51:42,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 82 transitions, 372 flow [2024-11-17 07:51:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:51:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:51:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 376 transitions. [2024-11-17 07:51:42,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-11-17 07:51:42,288 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 331 flow. Second operand 9 states and 376 transitions. [2024-11-17 07:51:42,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 82 transitions, 372 flow [2024-11-17 07:51:42,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 82 transitions, 340 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-17 07:51:42,292 INFO L231 Difference]: Finished difference. Result has 99 places, 82 transitions, 260 flow [2024-11-17 07:51:42,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=99, PETRI_TRANSITIONS=82} [2024-11-17 07:51:42,293 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-11-17 07:51:42,293 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 82 transitions, 260 flow [2024-11-17 07:51:42,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 13 states have internal predecessors, (502), 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 07:51:42,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:42,294 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:42,314 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 07:51:42,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:42,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:42,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1246657512, now seen corresponding path program 2 times [2024-11-17 07:51:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857280792] [2024-11-17 07:51:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:42,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:42,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:42,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857280792] [2024-11-17 07:51:42,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857280792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607445857] [2024-11-17 07:51:42,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:51:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:42,586 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 07:51:42,587 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 07:51:42,668 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:51:42,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:51:42,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:51:42,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:42,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607445857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:51:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595879187] [2024-11-17 07:51:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:42,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:51:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:51:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:51:42,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:42,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 82 transitions, 260 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 07:51:42,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:42,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:42,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:43,154 INFO L124 PetriNetUnfolderBase]: 2119/4626 cut-off events. [2024-11-17 07:51:43,155 INFO L125 PetriNetUnfolderBase]: For 1164/1180 co-relation queries the response was YES. [2024-11-17 07:51:43,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 4626 events. 2119/4626 cut-off events. For 1164/1180 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 35765 event pairs, 1273 based on Foata normal form. 52/4006 useless extension candidates. Maximal degree in co-relation 9218. Up to 2633 conditions per place. [2024-11-17 07:51:43,179 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 63 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-17 07:51:43,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 443 flow [2024-11-17 07:51:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-11-17 07:51:43,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2024-11-17 07:51:43,181 INFO L175 Difference]: Start difference. First operand has 99 places, 82 transitions, 260 flow. Second operand 4 states and 205 transitions. [2024-11-17 07:51:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 443 flow [2024-11-17 07:51:43,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 427 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-17 07:51:43,187 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 250 flow [2024-11-17 07:51:43,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-11-17 07:51:43,189 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2024-11-17 07:51:43,189 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 250 flow [2024-11-17 07:51:43,189 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 07:51:43,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:43,190 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:43,207 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 07:51:43,390 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,SelfDestructingSolverStorable9 [2024-11-17 07:51:43,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:43,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash -8322126, now seen corresponding path program 1 times [2024-11-17 07:51:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902826460] [2024-11-17 07:51:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902826460] [2024-11-17 07:51:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902826460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:43,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:51:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611175596] [2024-11-17 07:51:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:43,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:51:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:51:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:51:43,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:43,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:43,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:43,820 INFO L124 PetriNetUnfolderBase]: 1852/4291 cut-off events. [2024-11-17 07:51:43,820 INFO L125 PetriNetUnfolderBase]: For 1886/1894 co-relation queries the response was YES. [2024-11-17 07:51:43,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8568 conditions, 4291 events. 1852/4291 cut-off events. For 1886/1894 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 33933 event pairs, 1249 based on Foata normal form. 52/3751 useless extension candidates. Maximal degree in co-relation 8554. Up to 2634 conditions per place. [2024-11-17 07:51:43,843 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 62 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-11-17 07:51:43,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 429 flow [2024-11-17 07:51:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:51:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:51:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-17 07:51:43,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-17 07:51:43,845 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 250 flow. Second operand 3 states and 169 transitions. [2024-11-17 07:51:43,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 429 flow [2024-11-17 07:51:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 419 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:51:43,850 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 244 flow [2024-11-17 07:51:43,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-17 07:51:43,851 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-17 07:51:43,851 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 244 flow [2024-11-17 07:51:43,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:43,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:43,852 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:43,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:51:43,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:43,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1007601761, now seen corresponding path program 1 times [2024-11-17 07:51:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:43,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141496866] [2024-11-17 07:51:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:43,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:43,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141496866] [2024-11-17 07:51:43,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141496866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:43,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:51:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718119780] [2024-11-17 07:51:43,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:43,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:43,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-17 07:51:43,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:51:43,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:43,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-17 07:51:43,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:44,318 INFO L124 PetriNetUnfolderBase]: 1577/3452 cut-off events. [2024-11-17 07:51:44,318 INFO L125 PetriNetUnfolderBase]: For 1691/1699 co-relation queries the response was YES. [2024-11-17 07:51:44,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 3452 events. 1577/3452 cut-off events. For 1691/1699 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24269 event pairs, 719 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 7274. Up to 1478 conditions per place. [2024-11-17 07:51:44,339 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 97 selfloop transitions, 4 changer transitions 12/146 dead transitions. [2024-11-17 07:51:44,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 728 flow [2024-11-17 07:51:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-17 07:51:44,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-17 07:51:44,342 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 244 flow. Second operand 5 states and 294 transitions. [2024-11-17 07:51:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 728 flow [2024-11-17 07:51:44,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 146 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:44,347 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 261 flow [2024-11-17 07:51:44,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-11-17 07:51:44,348 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2024-11-17 07:51:44,348 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 261 flow [2024-11-17 07:51:44,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:51:44,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:44,349 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:44,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:51:44,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1137437484, now seen corresponding path program 1 times [2024-11-17 07:51:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314218549] [2024-11-17 07:51:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314218549] [2024-11-17 07:51:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314218549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820402664] [2024-11-17 07:51:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:44,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:44,446 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 07:51:44,447 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 07:51:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:44,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:51:44,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:44,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820402664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:44,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:44,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:51:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395525097] [2024-11-17 07:51:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:44,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:51:44,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:51:44,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:44,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:44,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 07:51:44,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:44,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:44,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:45,047 INFO L124 PetriNetUnfolderBase]: 1666/3469 cut-off events. [2024-11-17 07:51:45,048 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-11-17 07:51:45,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7797 conditions, 3469 events. 1666/3469 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 23455 event pairs, 77 based on Foata normal form. 47/3209 useless extension candidates. Maximal degree in co-relation 7781. Up to 1461 conditions per place. [2024-11-17 07:51:45,063 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 128 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-11-17 07:51:45,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 825 flow [2024-11-17 07:51:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:51:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:51:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 338 transitions. [2024-11-17 07:51:45,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-17 07:51:45,066 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 261 flow. Second operand 6 states and 338 transitions. [2024-11-17 07:51:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 825 flow [2024-11-17 07:51:45,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:51:45,072 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 267 flow [2024-11-17 07:51:45,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-11-17 07:51:45,073 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:45,073 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 267 flow [2024-11-17 07:51:45,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 07:51:45,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:45,073 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:45,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:51:45,274 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 07:51:45,275 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:45,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash 591314549, now seen corresponding path program 1 times [2024-11-17 07:51:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887646339] [2024-11-17 07:51:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887646339] [2024-11-17 07:51:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887646339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631807733] [2024-11-17 07:51:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:45,350 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 07:51:45,352 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 07:51:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:45,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:45,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:45,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:45,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631807733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:45,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803988208] [2024-11-17 07:51:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:45,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:45,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-17 07:51:45,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:45,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:45,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-17 07:51:45,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:45,957 INFO L124 PetriNetUnfolderBase]: 2050/4518 cut-off events. [2024-11-17 07:51:45,957 INFO L125 PetriNetUnfolderBase]: For 2955/2969 co-relation queries the response was YES. [2024-11-17 07:51:45,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 4518 events. 2050/4518 cut-off events. For 2955/2969 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 33446 event pairs, 1243 based on Foata normal form. 92/4133 useless extension candidates. Maximal degree in co-relation 9874. Up to 2435 conditions per place. [2024-11-17 07:51:45,988 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 114 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-11-17 07:51:45,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 771 flow [2024-11-17 07:51:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-17 07:51:45,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-11-17 07:51:45,990 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 267 flow. Second operand 5 states and 274 transitions. [2024-11-17 07:51:45,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 771 flow [2024-11-17 07:51:45,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 735 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:45,996 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 294 flow [2024-11-17 07:51:45,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-11-17 07:51:45,997 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-17 07:51:45,998 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 294 flow [2024-11-17 07:51:45,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:45,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:45,998 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:46,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:51:46,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:46,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:46,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:46,202 INFO L85 PathProgramCache]: Analyzing trace with hash -900822939, now seen corresponding path program 1 times [2024-11-17 07:51:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:46,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734957382] [2024-11-17 07:51:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734957382] [2024-11-17 07:51:46,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734957382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:46,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:46,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:51:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207679933] [2024-11-17 07:51:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:46,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:51:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:51:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:51:46,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-17 07:51:46,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 07:51:46,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:46,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-17 07:51:46,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:46,636 INFO L124 PetriNetUnfolderBase]: 1735/4043 cut-off events. [2024-11-17 07:51:46,636 INFO L125 PetriNetUnfolderBase]: For 2641/2667 co-relation queries the response was YES. [2024-11-17 07:51:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 4043 events. 1735/4043 cut-off events. For 2641/2667 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30375 event pairs, 1286 based on Foata normal form. 67/3733 useless extension candidates. Maximal degree in co-relation 9044. Up to 2520 conditions per place. [2024-11-17 07:51:46,661 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 69 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-17 07:51:46,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 535 flow [2024-11-17 07:51:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:51:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:51:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-17 07:51:46,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:51:46,663 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 294 flow. Second operand 3 states and 168 transitions. [2024-11-17 07:51:46,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 535 flow [2024-11-17 07:51:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 104 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:46,671 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 292 flow [2024-11-17 07:51:46,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-11-17 07:51:46,672 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-17 07:51:46,672 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 292 flow [2024-11-17 07:51:46,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 07:51:46,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:46,672 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:46,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:51:46,673 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:46,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1150882508, now seen corresponding path program 1 times [2024-11-17 07:51:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50944448] [2024-11-17 07:51:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50944448] [2024-11-17 07:51:46,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50944448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142115213] [2024-11-17 07:51:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:46,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:46,751 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 07:51:46,753 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 07:51:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:46,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:51:46,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:46,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142115213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-17 07:51:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472052716] [2024-11-17 07:51:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:46,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:46,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:46,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 07:51:46,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:46,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:46,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:47,194 INFO L124 PetriNetUnfolderBase]: 1833/4179 cut-off events. [2024-11-17 07:51:47,194 INFO L125 PetriNetUnfolderBase]: For 2895/2899 co-relation queries the response was YES. [2024-11-17 07:51:47,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 4179 events. 1833/4179 cut-off events. For 2895/2899 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 30951 event pairs, 1060 based on Foata normal form. 50/3872 useless extension candidates. Maximal degree in co-relation 9515. Up to 2021 conditions per place. [2024-11-17 07:51:47,216 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-17 07:51:47,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 517 flow [2024-11-17 07:51:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-17 07:51:47,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-17 07:51:47,218 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 292 flow. Second operand 4 states and 204 transitions. [2024-11-17 07:51:47,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 517 flow [2024-11-17 07:51:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:47,227 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 290 flow [2024-11-17 07:51:47,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-11-17 07:51:47,228 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-17 07:51:47,228 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 290 flow [2024-11-17 07:51:47,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 07:51:47,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:47,228 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:47,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:51:47,429 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 07:51:47,429 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:47,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1317589305, now seen corresponding path program 1 times [2024-11-17 07:51:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126703784] [2024-11-17 07:51:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126703784] [2024-11-17 07:51:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126703784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015927282] [2024-11-17 07:51:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:47,510 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 07:51:47,511 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 07:51:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:47,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:51:47,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:47,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:47,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015927282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:47,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:47,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-17 07:51:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929391883] [2024-11-17 07:51:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:47,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:47,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-17 07:51:47,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 07:51:47,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:47,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-17 07:51:47,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:48,048 INFO L124 PetriNetUnfolderBase]: 1837/4141 cut-off events. [2024-11-17 07:51:48,049 INFO L125 PetriNetUnfolderBase]: For 2941/2945 co-relation queries the response was YES. [2024-11-17 07:51:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 4141 events. 1837/4141 cut-off events. For 2941/2945 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30259 event pairs, 1060 based on Foata normal form. 50/3834 useless extension candidates. Maximal degree in co-relation 9420. Up to 2021 conditions per place. [2024-11-17 07:51:48,065 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 70 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-11-17 07:51:48,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 507 flow [2024-11-17 07:51:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-17 07:51:48,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-17 07:51:48,067 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 290 flow. Second operand 4 states and 200 transitions. [2024-11-17 07:51:48,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 507 flow [2024-11-17 07:51:48,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:51:48,074 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 286 flow [2024-11-17 07:51:48,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-11-17 07:51:48,075 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:48,075 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 286 flow [2024-11-17 07:51:48,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 07:51:48,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:48,075 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:48,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:48,276 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 07:51:48,276 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:48,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1891494440, now seen corresponding path program 1 times [2024-11-17 07:51:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619372684] [2024-11-17 07:51:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619372684] [2024-11-17 07:51:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619372684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:48,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:51:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:51:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218923878] [2024-11-17 07:51:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:48,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:51:48,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-17 07:51:48,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 286 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 07:51:48,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:48,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-17 07:51:48,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:48,660 INFO L124 PetriNetUnfolderBase]: 1880/4054 cut-off events. [2024-11-17 07:51:48,660 INFO L125 PetriNetUnfolderBase]: For 2843/2863 co-relation queries the response was YES. [2024-11-17 07:51:48,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 4054 events. 1880/4054 cut-off events. For 2843/2863 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 28634 event pairs, 1200 based on Foata normal form. 122/3777 useless extension candidates. Maximal degree in co-relation 9381. Up to 2258 conditions per place. [2024-11-17 07:51:48,714 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 72 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-17 07:51:48,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 536 flow [2024-11-17 07:51:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-17 07:51:48,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-17 07:51:48,716 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 286 flow. Second operand 4 states and 201 transitions. [2024-11-17 07:51:48,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 536 flow [2024-11-17 07:51:48,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:51:48,723 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 280 flow [2024-11-17 07:51:48,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-11-17 07:51:48,724 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-17 07:51:48,724 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 280 flow [2024-11-17 07:51:48,724 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 07:51:48,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:48,725 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:48,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 07:51:48,725 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:48,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2104404818, now seen corresponding path program 1 times [2024-11-17 07:51:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:48,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114687868] [2024-11-17 07:51:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114687868] [2024-11-17 07:51:48,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114687868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730096291] [2024-11-17 07:51:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:48,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:48,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:48,815 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 07:51:48,816 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 07:51:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:48,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:51:48,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:48,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730096291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:48,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:48,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-17 07:51:48,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629481198] [2024-11-17 07:51:48,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:48,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:51:48,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:48,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:51:48,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:51:49,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-17 07:51:49,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 07:51:49,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:49,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-17 07:51:49,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:49,398 INFO L124 PetriNetUnfolderBase]: 1923/4159 cut-off events. [2024-11-17 07:51:49,398 INFO L125 PetriNetUnfolderBase]: For 2647/2647 co-relation queries the response was YES. [2024-11-17 07:51:49,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 4159 events. 1923/4159 cut-off events. For 2647/2647 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 29344 event pairs, 1356 based on Foata normal form. 92/4034 useless extension candidates. Maximal degree in co-relation 9554. Up to 2601 conditions per place. [2024-11-17 07:51:49,415 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 112 selfloop transitions, 6 changer transitions 0/141 dead transitions. [2024-11-17 07:51:49,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 743 flow [2024-11-17 07:51:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:51:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:51:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-17 07:51:49,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-17 07:51:49,417 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 280 flow. Second operand 6 states and 300 transitions. [2024-11-17 07:51:49,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 743 flow [2024-11-17 07:51:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:49,425 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 281 flow [2024-11-17 07:51:49,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-11-17 07:51:49,425 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:49,426 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 281 flow [2024-11-17 07:51:49,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 07:51:49,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:49,426 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:49,441 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 07:51:49,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:49,627 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:49,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1493213800, now seen corresponding path program 1 times [2024-11-17 07:51:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860314511] [2024-11-17 07:51:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860314511] [2024-11-17 07:51:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860314511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475645291] [2024-11-17 07:51:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:49,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:49,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:49,699 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 07:51:49,701 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 07:51:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:49,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:51:49,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:49,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475645291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-17 07:51:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506732751] [2024-11-17 07:51:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:49,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:49,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:49,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:49,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:49,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 281 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 07:51:49,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:49,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:49,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:50,107 INFO L124 PetriNetUnfolderBase]: 1698/3797 cut-off events. [2024-11-17 07:51:50,108 INFO L125 PetriNetUnfolderBase]: For 2623/2639 co-relation queries the response was YES. [2024-11-17 07:51:50,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 3797 events. 1698/3797 cut-off events. For 2623/2639 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 27113 event pairs, 1200 based on Foata normal form. 16/3576 useless extension candidates. Maximal degree in co-relation 8756. Up to 2258 conditions per place. [2024-11-17 07:51:50,122 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 70 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-17 07:51:50,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 530 flow [2024-11-17 07:51:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-17 07:51:50,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-11-17 07:51:50,124 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 281 flow. Second operand 4 states and 202 transitions. [2024-11-17 07:51:50,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 530 flow [2024-11-17 07:51:50,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 512 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:50,129 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 274 flow [2024-11-17 07:51:50,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2024-11-17 07:51:50,129 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-17 07:51:50,129 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 274 flow [2024-11-17 07:51:50,129 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 07:51:50,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:50,130 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:50,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:50,330 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 07:51:50,330 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:50,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -812039236, now seen corresponding path program 1 times [2024-11-17 07:51:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840892359] [2024-11-17 07:51:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:50,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840892359] [2024-11-17 07:51:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840892359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549328946] [2024-11-17 07:51:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:50,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:50,439 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 07:51:50,440 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 07:51:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:50,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:51:50,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:50,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549328946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:50,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:50,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-17 07:51:50,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413607599] [2024-11-17 07:51:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:50,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:51:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:51:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:51:50,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-17 07:51:50,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 07:51:50,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:50,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-17 07:51:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:51,130 INFO L124 PetriNetUnfolderBase]: 2145/4424 cut-off events. [2024-11-17 07:51:51,130 INFO L125 PetriNetUnfolderBase]: For 2855/2859 co-relation queries the response was YES. [2024-11-17 07:51:51,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10454 conditions, 4424 events. 2145/4424 cut-off events. For 2855/2859 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 30346 event pairs, 1052 based on Foata normal form. 96/4363 useless extension candidates. Maximal degree in co-relation 10436. Up to 2067 conditions per place. [2024-11-17 07:51:51,146 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 129 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-11-17 07:51:51,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 870 flow [2024-11-17 07:51:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:51:51,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:51:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2024-11-17 07:51:51,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5935374149659864 [2024-11-17 07:51:51,148 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 274 flow. Second operand 7 states and 349 transitions. [2024-11-17 07:51:51,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 870 flow [2024-11-17 07:51:51,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 848 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:51:51,156 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 308 flow [2024-11-17 07:51:51,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-11-17 07:51:51,157 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 27 predicate places. [2024-11-17 07:51:51,157 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 308 flow [2024-11-17 07:51:51,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 07:51:51,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:51,158 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:51,174 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 07:51:51,358 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 07:51:51,358 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:51,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1515277077, now seen corresponding path program 1 times [2024-11-17 07:51:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630120194] [2024-11-17 07:51:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:51,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630120194] [2024-11-17 07:51:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630120194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955551299] [2024-11-17 07:51:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:51,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:51,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:51,441 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 07:51:51,442 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 07:51:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:51,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:51,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:51,553 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955551299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:51,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:51,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770879659] [2024-11-17 07:51:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:51,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:51,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-17 07:51:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 07:51:51,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:51,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-17 07:51:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:52,012 INFO L124 PetriNetUnfolderBase]: 1979/4178 cut-off events. [2024-11-17 07:51:52,012 INFO L125 PetriNetUnfolderBase]: For 3781/3805 co-relation queries the response was YES. [2024-11-17 07:51:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 4178 events. 1979/4178 cut-off events. For 3781/3805 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28952 event pairs, 1278 based on Foata normal form. 70/4081 useless extension candidates. Maximal degree in co-relation 10376. Up to 2510 conditions per place. [2024-11-17 07:51:52,029 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 111 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-11-17 07:51:52,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 140 transitions, 754 flow [2024-11-17 07:51:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-17 07:51:52,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-17 07:51:52,031 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 308 flow. Second operand 5 states and 267 transitions. [2024-11-17 07:51:52,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 140 transitions, 754 flow [2024-11-17 07:51:52,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 741 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:52,041 INFO L231 Difference]: Finished difference. Result has 102 places, 77 transitions, 300 flow [2024-11-17 07:51:52,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2024-11-17 07:51:52,042 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-17 07:51:52,042 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 300 flow [2024-11-17 07:51:52,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 07:51:52,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:52,043 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:52,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 07:51:52,243 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 07:51:52,244 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:52,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1515276084, now seen corresponding path program 1 times [2024-11-17 07:51:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610084099] [2024-11-17 07:51:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:52,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610084099] [2024-11-17 07:51:52,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610084099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:52,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783491454] [2024-11-17 07:51:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:52,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:52,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:52,348 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 07:51:52,350 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 07:51:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:52,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:52,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:52,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783491454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431869888] [2024-11-17 07:51:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:52,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:52,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:52,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-17 07:51:52,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 300 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 07:51:52,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:52,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-17 07:51:52,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:52,901 INFO L124 PetriNetUnfolderBase]: 2189/4332 cut-off events. [2024-11-17 07:51:52,901 INFO L125 PetriNetUnfolderBase]: For 3372/3382 co-relation queries the response was YES. [2024-11-17 07:51:52,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 4332 events. 2189/4332 cut-off events. For 3372/3382 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 28639 event pairs, 1408 based on Foata normal form. 56/4236 useless extension candidates. Maximal degree in co-relation 11018. Up to 2742 conditions per place. [2024-11-17 07:51:52,918 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 89 selfloop transitions, 6 changer transitions 5/120 dead transitions. [2024-11-17 07:51:52,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 120 transitions, 652 flow [2024-11-17 07:51:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2024-11-17 07:51:52,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-11-17 07:51:52,919 INFO L175 Difference]: Start difference. First operand has 102 places, 77 transitions, 300 flow. Second operand 4 states and 222 transitions. [2024-11-17 07:51:52,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 120 transitions, 652 flow [2024-11-17 07:51:52,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-17 07:51:52,932 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 297 flow [2024-11-17 07:51:52,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-11-17 07:51:52,933 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:52,934 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 297 flow [2024-11-17 07:51:52,934 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 07:51:52,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:52,934 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:52,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 07:51:53,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:53,135 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:53,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash -460315589, now seen corresponding path program 1 times [2024-11-17 07:51:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:53,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381976956] [2024-11-17 07:51:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381976956] [2024-11-17 07:51:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381976956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39960479] [2024-11-17 07:51:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:53,215 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:53,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 07:51:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:53,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:53,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:53,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:53,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39960479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:53,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:53,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345607005] [2024-11-17 07:51:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:53,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:53,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-17 07:51:53,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:53,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:53,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-17 07:51:53,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:53,721 INFO L124 PetriNetUnfolderBase]: 2264/4880 cut-off events. [2024-11-17 07:51:53,721 INFO L125 PetriNetUnfolderBase]: For 3778/3824 co-relation queries the response was YES. [2024-11-17 07:51:53,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 4880 events. 2264/4880 cut-off events. For 3778/3824 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 35587 event pairs, 1592 based on Foata normal form. 36/4601 useless extension candidates. Maximal degree in co-relation 11699. Up to 3002 conditions per place. [2024-11-17 07:51:53,741 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 125 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-17 07:51:53,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 939 flow [2024-11-17 07:51:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-17 07:51:53,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-17 07:51:53,742 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 297 flow. Second operand 5 states and 267 transitions. [2024-11-17 07:51:53,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 939 flow [2024-11-17 07:51:53,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 892 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-17 07:51:53,753 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 318 flow [2024-11-17 07:51:53,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2024-11-17 07:51:53,753 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2024-11-17 07:51:53,753 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 318 flow [2024-11-17 07:51:53,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 07:51:53,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:53,754 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:53,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:53,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:53,955 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:53,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash -460316582, now seen corresponding path program 1 times [2024-11-17 07:51:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:53,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141602497] [2024-11-17 07:51:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141602497] [2024-11-17 07:51:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141602497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:54,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119833174] [2024-11-17 07:51:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:54,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:54,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:54,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 07:51:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:54,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:51:54,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:54,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119833174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:54,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-17 07:51:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102914994] [2024-11-17 07:51:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:54,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:51:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:51:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:51:54,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-17 07:51:54,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 07:51:54,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:54,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-17 07:51:54,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:54,707 INFO L124 PetriNetUnfolderBase]: 2592/5420 cut-off events. [2024-11-17 07:51:54,707 INFO L125 PetriNetUnfolderBase]: For 4586/4656 co-relation queries the response was YES. [2024-11-17 07:51:54,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 5420 events. 2592/5420 cut-off events. For 4586/4656 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 39187 event pairs, 1896 based on Foata normal form. 105/5369 useless extension candidates. Maximal degree in co-relation 13581. Up to 3594 conditions per place. [2024-11-17 07:51:54,727 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 127 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-17 07:51:54,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 931 flow [2024-11-17 07:51:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:51:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:51:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 297 transitions. [2024-11-17 07:51:54,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-17 07:51:54,728 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 318 flow. Second operand 6 states and 297 transitions. [2024-11-17 07:51:54,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 931 flow [2024-11-17 07:51:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:51:54,741 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 339 flow [2024-11-17 07:51:54,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2024-11-17 07:51:54,741 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2024-11-17 07:51:54,742 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 339 flow [2024-11-17 07:51:54,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 07:51:54,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:54,742 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:54,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 07:51:54,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-17 07:51:54,943 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:54,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1344000086, now seen corresponding path program 1 times [2024-11-17 07:51:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940230565] [2024-11-17 07:51:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940230565] [2024-11-17 07:51:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940230565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782987114] [2024-11-17 07:51:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:55,017 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:55,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 07:51:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:55,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:55,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:55,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:55,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782987114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:55,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:55,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730794935] [2024-11-17 07:51:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:55,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:55,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:55,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 81 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:55,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:55,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:55,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:55,594 INFO L124 PetriNetUnfolderBase]: 2456/5237 cut-off events. [2024-11-17 07:51:55,594 INFO L125 PetriNetUnfolderBase]: For 4836/4865 co-relation queries the response was YES. [2024-11-17 07:51:55,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13537 conditions, 5237 events. 2456/5237 cut-off events. For 4836/4865 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 38199 event pairs, 1914 based on Foata normal form. 71/5147 useless extension candidates. Maximal degree in co-relation 13514. Up to 3685 conditions per place. [2024-11-17 07:51:55,611 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 84 selfloop transitions, 3 changer transitions 21/130 dead transitions. [2024-11-17 07:51:55,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 130 transitions, 789 flow [2024-11-17 07:51:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-17 07:51:55,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6636904761904762 [2024-11-17 07:51:55,613 INFO L175 Difference]: Start difference. First operand has 109 places, 81 transitions, 339 flow. Second operand 4 states and 223 transitions. [2024-11-17 07:51:55,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 130 transitions, 789 flow [2024-11-17 07:51:55,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:51:55,626 INFO L231 Difference]: Finished difference. Result has 106 places, 73 transitions, 291 flow [2024-11-17 07:51:55,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2024-11-17 07:51:55,627 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-11-17 07:51:55,627 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 291 flow [2024-11-17 07:51:55,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:51:55,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:55,627 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:55,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:55,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-17 07:51:55,828 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:55,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1384911441, now seen corresponding path program 1 times [2024-11-17 07:51:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:55,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986588474] [2024-11-17 07:51:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986588474] [2024-11-17 07:51:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986588474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825206558] [2024-11-17 07:51:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:55,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:55,912 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:55,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 07:51:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:55,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:51:55,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:56,073 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825206558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:56,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:56,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-17 07:51:56,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399514234] [2024-11-17 07:51:56,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:56,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:51:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:51:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:51:56,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-17 07:51:56,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 07:51:56,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:56,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-17 07:51:56,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:56,612 INFO L124 PetriNetUnfolderBase]: 2105/4506 cut-off events. [2024-11-17 07:51:56,612 INFO L125 PetriNetUnfolderBase]: For 4042/4070 co-relation queries the response was YES. [2024-11-17 07:51:56,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11248 conditions, 4506 events. 2105/4506 cut-off events. For 4042/4070 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31942 event pairs, 756 based on Foata normal form. 106/4572 useless extension candidates. Maximal degree in co-relation 11226. Up to 1463 conditions per place. [2024-11-17 07:51:56,632 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 141 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2024-11-17 07:51:56,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 170 transitions, 1057 flow [2024-11-17 07:51:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:51:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:51:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-11-17 07:51:56,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5799319727891157 [2024-11-17 07:51:56,633 INFO L175 Difference]: Start difference. First operand has 106 places, 73 transitions, 291 flow. Second operand 7 states and 341 transitions. [2024-11-17 07:51:56,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 170 transitions, 1057 flow [2024-11-17 07:51:56,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 170 transitions, 997 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-17 07:51:56,643 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 299 flow [2024-11-17 07:51:56,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-11-17 07:51:56,644 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-17 07:51:56,644 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 299 flow [2024-11-17 07:51:56,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 07:51:56,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:56,644 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:56,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:56,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-17 07:51:56,845 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:56,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 936107937, now seen corresponding path program 1 times [2024-11-17 07:51:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426121489] [2024-11-17 07:51:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:56,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426121489] [2024-11-17 07:51:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426121489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062964425] [2024-11-17 07:51:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:56,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:56,916 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:56,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 07:51:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:57,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:57,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:57,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062964425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:57,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:57,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454816052] [2024-11-17 07:51:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:57,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:57,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-17 07:51:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 07:51:57,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:57,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-17 07:51:57,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:57,525 INFO L124 PetriNetUnfolderBase]: 1859/4213 cut-off events. [2024-11-17 07:51:57,525 INFO L125 PetriNetUnfolderBase]: For 3753/3775 co-relation queries the response was YES. [2024-11-17 07:51:57,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10560 conditions, 4213 events. 1859/4213 cut-off events. For 3753/3775 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 30760 event pairs, 1060 based on Foata normal form. 59/4180 useless extension candidates. Maximal degree in co-relation 10539. Up to 2004 conditions per place. [2024-11-17 07:51:57,545 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 118 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-17 07:51:57,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 145 transitions, 858 flow [2024-11-17 07:51:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:51:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:51:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-11-17 07:51:57,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-17 07:51:57,547 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 299 flow. Second operand 5 states and 260 transitions. [2024-11-17 07:51:57,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 145 transitions, 858 flow [2024-11-17 07:51:57,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 843 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:51:57,565 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 289 flow [2024-11-17 07:51:57,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2024-11-17 07:51:57,566 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-17 07:51:57,566 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 289 flow [2024-11-17 07:51:57,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 07:51:57,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:57,566 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:57,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:57,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:57,767 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:57,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash 936106944, now seen corresponding path program 1 times [2024-11-17 07:51:57,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:57,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250657185] [2024-11-17 07:51:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250657185] [2024-11-17 07:51:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250657185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968653960] [2024-11-17 07:51:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:57,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:57,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:57,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:57,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 07:51:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:57,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:57,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:58,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968653960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563505228] [2024-11-17 07:51:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:58,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:58,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:58,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-17 07:51:58,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 289 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 07:51:58,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:58,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-17 07:51:58,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:58,412 INFO L124 PetriNetUnfolderBase]: 2269/4519 cut-off events. [2024-11-17 07:51:58,413 INFO L125 PetriNetUnfolderBase]: For 3699/3729 co-relation queries the response was YES. [2024-11-17 07:51:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11886 conditions, 4519 events. 2269/4519 cut-off events. For 3699/3729 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30080 event pairs, 1212 based on Foata normal form. 108/4533 useless extension candidates. Maximal degree in co-relation 11866. Up to 2274 conditions per place. [2024-11-17 07:51:58,428 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 100 selfloop transitions, 3 changer transitions 2/123 dead transitions. [2024-11-17 07:51:58,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 721 flow [2024-11-17 07:51:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 218 transitions. [2024-11-17 07:51:58,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-11-17 07:51:58,429 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 289 flow. Second operand 4 states and 218 transitions. [2024-11-17 07:51:58,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 721 flow [2024-11-17 07:51:58,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 708 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:51:58,446 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 280 flow [2024-11-17 07:51:58,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-11-17 07:51:58,446 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-11-17 07:51:58,446 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 280 flow [2024-11-17 07:51:58,446 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 07:51:58,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:51:58,447 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 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 07:51:58,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-17 07:51:58,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 07:51:58,647 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:51:58,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:51:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 569625961, now seen corresponding path program 1 times [2024-11-17 07:51:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:51:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438728005] [2024-11-17 07:51:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:51:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:51:58,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:51:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438728005] [2024-11-17 07:51:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438728005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:51:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882242417] [2024-11-17 07:51:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:51:58,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:58,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:58,719 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:51:58,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-17 07:51:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:51:58,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 07:51:58,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:51:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:51:58,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:51:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882242417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:51:58,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:51:58,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-17 07:51:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519240196] [2024-11-17 07:51:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:51:58,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:51:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:51:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:51:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:51:58,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-17 07:51:58,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 07:51:58,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:51:58,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-17 07:51:58,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:51:59,189 INFO L124 PetriNetUnfolderBase]: 1695/3621 cut-off events. [2024-11-17 07:51:59,189 INFO L125 PetriNetUnfolderBase]: For 2498/2508 co-relation queries the response was YES. [2024-11-17 07:51:59,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 3621 events. 1695/3621 cut-off events. For 2498/2508 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24503 event pairs, 1212 based on Foata normal form. 106/3627 useless extension candidates. Maximal degree in co-relation 9297. Up to 2274 conditions per place. [2024-11-17 07:51:59,198 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2024-11-17 07:51:59,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 686 flow [2024-11-17 07:51:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:51:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:51:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-17 07:51:59,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-17 07:51:59,199 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 280 flow. Second operand 4 states and 216 transitions. [2024-11-17 07:51:59,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 686 flow [2024-11-17 07:51:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 678 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:51:59,208 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2024-11-17 07:51:59,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2024-11-17 07:51:59,208 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-17 07:51:59,209 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2024-11-17 07:51:59,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 07:51:59,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-17 07:51:59,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-17 07:51:59,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-17 07:51:59,214 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-17 07:51:59,214 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-17 07:51:59,214 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-17 07:51:59,214 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-17 07:51:59,214 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-17 07:51:59,215 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-17 07:51:59,216 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-17 07:51:59,216 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-17 07:51:59,216 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-17 07:51:59,216 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-17 07:51:59,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-17 07:51:59,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:51:59,421 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:51:59,431 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 07:51:59,431 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 07:51:59,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 07:51:59 BasicIcfg [2024-11-17 07:51:59,447 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 07:51:59,447 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 07:51:59,448 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 07:51:59,448 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 07:51:59,448 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:51:35" (3/4) ... [2024-11-17 07:51:59,454 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 07:51:59,457 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-17 07:51:59,463 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-17 07:51:59,476 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 84 nodes and edges [2024-11-17 07:51:59,477 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-17 07:51:59,477 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-17 07:51:59,482 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-17 07:51:59,482 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 07:51:59,574 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 07:51:59,575 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 07:51:59,575 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 07:51:59,575 INFO L158 Benchmark]: Toolchain (without parser) took 25445.52ms. Allocated memory was 144.7MB in the beginning and 964.7MB in the end (delta: 820.0MB). Free memory was 88.0MB in the beginning and 800.9MB in the end (delta: -712.9MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,576 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 144.7MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 07:51:59,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.19ms. Allocated memory is still 144.7MB. Free memory was 88.0MB in the beginning and 73.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.40ms. Allocated memory is still 144.7MB. Free memory was 73.7MB in the beginning and 71.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,576 INFO L158 Benchmark]: Boogie Preprocessor took 48.41ms. Allocated memory is still 144.7MB. Free memory was 71.3MB in the beginning and 68.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,577 INFO L158 Benchmark]: IcfgBuilder took 868.98ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 68.5MB in the beginning and 103.6MB in the end (delta: -35.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,577 INFO L158 Benchmark]: TraceAbstraction took 23994.81ms. Allocated memory was 192.9MB in the beginning and 964.7MB in the end (delta: 771.8MB). Free memory was 102.6MB in the beginning and 807.2MB in the end (delta: -704.7MB). Peak memory consumption was 527.4MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,577 INFO L158 Benchmark]: Witness Printer took 127.35ms. Allocated memory is still 964.7MB. Free memory was 807.2MB in the beginning and 800.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-17 07:51:59,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 144.7MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.19ms. Allocated memory is still 144.7MB. Free memory was 88.0MB in the beginning and 73.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.40ms. Allocated memory is still 144.7MB. Free memory was 73.7MB in the beginning and 71.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.41ms. Allocated memory is still 144.7MB. Free memory was 71.3MB in the beginning and 68.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 868.98ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 68.5MB in the beginning and 103.6MB in the end (delta: -35.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23994.81ms. Allocated memory was 192.9MB in the beginning and 964.7MB in the end (delta: 771.8MB). Free memory was 102.6MB in the beginning and 807.2MB in the end (delta: -704.7MB). Peak memory consumption was 527.4MB. Max. memory is 16.1GB. * Witness Printer took 127.35ms. Allocated memory is still 964.7MB. Free memory was 807.2MB in the beginning and 800.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.8s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1926 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1652 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5612 IncrementalHoareTripleChecker+Invalid, 5690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 80 mSDtfsCounter, 5612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=25, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1331 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1340 ConstructedInterpolants, 0 QuantifiedInterpolants, 3023 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3444 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 54 InterpolantComputations, 27 PerfectInterpolantSequences, 839/922 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 07:51:59,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE