./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive-alt.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 d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:57:02,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:57:02,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:57:02,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:57:02,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:57:02,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:57:02,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:57:02,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:57:02,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:57:02,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:57:02,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:57:02,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:57:02,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:57:02,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:57:02,106 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:57:02,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:57:02,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:57:02,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:57:02,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:57:02,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:57:02,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:57:02,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:57:02,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:57:02,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:57:02,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:57:02,111 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:57:02,111 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:57:02,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:57:02,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:57:02,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:57:02,112 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:57:02,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:57:02,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:57:02,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:57:02,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:02,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:57:02,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:57:02,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:57:02,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:57:02,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-11-17 07:57:02,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:57:02,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:57:02,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:57:02,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:57:02,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:57:02,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-17 07:57:03,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:57:03,836 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:57:03,836 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-17 07:57:03,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7587430fc/0a3ae44d5a354ab9b6b637446eed9eba/FLAG857835430 [2024-11-17 07:57:03,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7587430fc/0a3ae44d5a354ab9b6b637446eed9eba [2024-11-17 07:57:03,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:57:03,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:57:03,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:03,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:57:03,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:57:03,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:03" (1/1) ... [2024-11-17 07:57:03,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5031f54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:03, skipping insertion in model container [2024-11-17 07:57:03,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:03" (1/1) ... [2024-11-17 07:57:03,884 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:57:04,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:04,066 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:57:04,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:04,106 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:57:04,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04 WrapperNode [2024-11-17 07:57:04,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:04,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:04,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:57:04,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:57:04,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,145 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2024-11-17 07:57:04,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:04,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:57:04,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:57:04,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:57:04,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,181 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 07:57:04,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:57:04,198 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:57:04,198 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:57:04,198 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:57:04,198 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (1/1) ... [2024-11-17 07:57:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:04,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:57:04,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:57:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:57:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:57:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:57:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:57:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:57:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:57:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:57:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:57:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:57:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:57:04,281 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:57:04,358 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:57:04,360 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:57:04,538 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:57:04,539 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:57:04,714 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:57:04,714 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:57:04,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:04 BoogieIcfgContainer [2024-11-17 07:57:04,715 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:57:04,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:57:04,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:57:04,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:57:04,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:57:03" (1/3) ... [2024-11-17 07:57:04,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f834a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:04, skipping insertion in model container [2024-11-17 07:57:04,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:04" (2/3) ... [2024-11-17 07:57:04,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f834a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:04, skipping insertion in model container [2024-11-17 07:57:04,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:04" (3/3) ... [2024-11-17 07:57:04,726 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-11-17 07:57:04,738 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:57:04,738 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 07:57:04,738 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:57:04,797 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:57:04,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 45 transitions, 104 flow [2024-11-17 07:57:04,858 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-11-17 07:57:04,858 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:57:04,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 7/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 98 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-17 07:57:04,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 45 transitions, 104 flow [2024-11-17 07:57:04,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 41 transitions, 91 flow [2024-11-17 07:57:04,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:57:04,883 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;@58736b4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:57:04,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-17 07:57:04,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:57:04,889 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:57:04,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:57:04,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:04,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:57:04,890 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:04,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 12579690, now seen corresponding path program 1 times [2024-11-17 07:57:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:04,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762998726] [2024-11-17 07:57:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:05,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:05,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762998726] [2024-11-17 07:57:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762998726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128005629] [2024-11-17 07:57:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:05,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:05,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-17 07:57:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-17 07:57:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:05,449 INFO L124 PetriNetUnfolderBase]: 346/622 cut-off events. [2024-11-17 07:57:05,450 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-17 07:57:05,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 622 events. 346/622 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2816 event pairs, 283 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1131. Up to 560 conditions per place. [2024-11-17 07:57:05,456 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 29 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-17 07:57:05,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 155 flow [2024-11-17 07:57:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-17 07:57:05,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-11-17 07:57:05,467 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 91 flow. Second operand 4 states and 76 transitions. [2024-11-17 07:57:05,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 155 flow [2024-11-17 07:57:05,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:05,471 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-11-17 07:57:05,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-11-17 07:57:05,475 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-17 07:57:05,476 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-11-17 07:57:05,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:05,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:05,477 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:57:05,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:57:05,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:05,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -267974124, now seen corresponding path program 1 times [2024-11-17 07:57:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751314302] [2024-11-17 07:57:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:05,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751314302] [2024-11-17 07:57:05,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751314302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:05,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959590911] [2024-11-17 07:57:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:05,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:05,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:05,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:05,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:57:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:05,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:05,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:05,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959590911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:05,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:05,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:57:05,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061827870] [2024-11-17 07:57:05,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:05,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:05,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:57:05,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-17 07:57:05,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:05,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:05,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-17 07:57:05,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:05,930 INFO L124 PetriNetUnfolderBase]: 346/621 cut-off events. [2024-11-17 07:57:05,930 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 07:57:05,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 621 events. 346/621 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2806 event pairs, 283 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1187. Up to 555 conditions per place. [2024-11-17 07:57:05,936 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 25 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2024-11-17 07:57:05,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 167 flow [2024-11-17 07:57:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-17 07:57:05,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-11-17 07:57:05,942 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 6 states and 87 transitions. [2024-11-17 07:57:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 167 flow [2024-11-17 07:57:05,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:05,944 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 114 flow [2024-11-17 07:57:05,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-17 07:57:05,945 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-17 07:57:05,946 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 114 flow [2024-11-17 07:57:05,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:05,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:05,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:57:05,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:57:06,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:06,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:06,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 282737092, now seen corresponding path program 1 times [2024-11-17 07:57:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050006419] [2024-11-17 07:57:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050006419] [2024-11-17 07:57:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050006419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456501483] [2024-11-17 07:57:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:06,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:06,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:06,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:57:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:06,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:06,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:06,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:06,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456501483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:06,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:06,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:57:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524281553] [2024-11-17 07:57:06,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:06,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:06,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-17 07:57:06,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 114 flow. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:06,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:06,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-17 07:57:06,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:06,619 INFO L124 PetriNetUnfolderBase]: 349/639 cut-off events. [2024-11-17 07:57:06,619 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-17 07:57:06,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 639 events. 349/639 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2936 event pairs, 283 based on Foata normal form. 3/432 useless extension candidates. Maximal degree in co-relation 1188. Up to 562 conditions per place. [2024-11-17 07:57:06,623 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 28 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-11-17 07:57:06,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2024-11-17 07:57:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-11-17 07:57:06,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29777777777777775 [2024-11-17 07:57:06,625 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 114 flow. Second operand 10 states and 134 transitions. [2024-11-17 07:57:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2024-11-17 07:57:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 220 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:06,628 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 182 flow [2024-11-17 07:57:06,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-11-17 07:57:06,628 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-11-17 07:57:06,628 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 182 flow [2024-11-17 07:57:06,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:06,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:06,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:06,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:57:06,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-17 07:57:06,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:06,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash -727529844, now seen corresponding path program 1 times [2024-11-17 07:57:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682111555] [2024-11-17 07:57:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:06,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:06,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682111555] [2024-11-17 07:57:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682111555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:06,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:57:06,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900070589] [2024-11-17 07:57:06,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:06,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:06,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:06,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:06,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:06,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:06,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:07,128 INFO L124 PetriNetUnfolderBase]: 436/808 cut-off events. [2024-11-17 07:57:07,128 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-17 07:57:07,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 808 events. 436/808 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3872 event pairs, 202 based on Foata normal form. 22/564 useless extension candidates. Maximal degree in co-relation 1565. Up to 465 conditions per place. [2024-11-17 07:57:07,133 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 51 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2024-11-17 07:57:07,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 327 flow [2024-11-17 07:57:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-17 07:57:07,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-17 07:57:07,136 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 182 flow. Second operand 3 states and 81 transitions. [2024-11-17 07:57:07,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 327 flow [2024-11-17 07:57:07,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 316 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:07,139 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 196 flow [2024-11-17 07:57:07,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-11-17 07:57:07,140 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-17 07:57:07,140 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 196 flow [2024-11-17 07:57:07,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:07,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:07,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:07,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:57:07,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:07,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1092488962, now seen corresponding path program 1 times [2024-11-17 07:57:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686545095] [2024-11-17 07:57:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686545095] [2024-11-17 07:57:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686545095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277869626] [2024-11-17 07:57:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:07,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:07,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-17 07:57:07,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:07,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:07,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-17 07:57:07,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:07,403 INFO L124 PetriNetUnfolderBase]: 503/939 cut-off events. [2024-11-17 07:57:07,403 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-17 07:57:07,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 939 events. 503/939 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4489 event pairs, 432 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 1995. Up to 740 conditions per place. [2024-11-17 07:57:07,406 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 40 selfloop transitions, 2 changer transitions 15/64 dead transitions. [2024-11-17 07:57:07,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 342 flow [2024-11-17 07:57:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-17 07:57:07,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-11-17 07:57:07,409 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 196 flow. Second operand 5 states and 97 transitions. [2024-11-17 07:57:07,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 342 flow [2024-11-17 07:57:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:07,412 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 199 flow [2024-11-17 07:57:07,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-11-17 07:57:07,413 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-11-17 07:57:07,413 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 199 flow [2024-11-17 07:57:07,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:07,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:07,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:07,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:57:07,415 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:07,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1348524972, now seen corresponding path program 1 times [2024-11-17 07:57:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:07,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047816064] [2024-11-17 07:57:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047816064] [2024-11-17 07:57:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047816064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331198730] [2024-11-17 07:57:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:07,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:07,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:07,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:07,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:57:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:07,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:07,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:07,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:07,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331198730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:07,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:07,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-17 07:57:07,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898863375] [2024-11-17 07:57:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:07,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:57:07,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:07,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:07,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:07,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:07,735 INFO L124 PetriNetUnfolderBase]: 250/504 cut-off events. [2024-11-17 07:57:07,735 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-17 07:57:07,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 504 events. 250/504 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2143 event pairs, 154 based on Foata normal form. 56/486 useless extension candidates. Maximal degree in co-relation 1075. Up to 355 conditions per place. [2024-11-17 07:57:07,737 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 33 selfloop transitions, 6 changer transitions 6/53 dead transitions. [2024-11-17 07:57:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 302 flow [2024-11-17 07:57:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-17 07:57:07,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-17 07:57:07,738 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 199 flow. Second operand 4 states and 82 transitions. [2024-11-17 07:57:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 302 flow [2024-11-17 07:57:07,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 296 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:07,740 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 186 flow [2024-11-17 07:57:07,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-17 07:57:07,740 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-11-17 07:57:07,740 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 186 flow [2024-11-17 07:57:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:07,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:07,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:07,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:57:07,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:07,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:07,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1602918882, now seen corresponding path program 1 times [2024-11-17 07:57:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683663648] [2024-11-17 07:57:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683663648] [2024-11-17 07:57:08,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683663648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535148955] [2024-11-17 07:57:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:08,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:08,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:57:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:08,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 07:57:08,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:08,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:09,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:09,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-17 07:57:09,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-17 07:57:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535148955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:09,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-17 07:57:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038374832] [2024-11-17 07:57:09,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:09,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 07:57:09,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 07:57:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:57:09,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:09,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 186 flow. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:09,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:09,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:09,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:10,106 INFO L124 PetriNetUnfolderBase]: 460/889 cut-off events. [2024-11-17 07:57:10,106 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-11-17 07:57:10,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 889 events. 460/889 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4347 event pairs, 122 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 2047. Up to 268 conditions per place. [2024-11-17 07:57:10,110 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 71 selfloop transitions, 24 changer transitions 4/105 dead transitions. [2024-11-17 07:57:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 584 flow [2024-11-17 07:57:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:57:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:57:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 214 transitions. [2024-11-17 07:57:10,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31703703703703706 [2024-11-17 07:57:10,112 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 186 flow. Second operand 15 states and 214 transitions. [2024-11-17 07:57:10,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 584 flow [2024-11-17 07:57:10,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 105 transitions, 542 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:10,115 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 318 flow [2024-11-17 07:57:10,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-17 07:57:10,116 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-11-17 07:57:10,116 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 318 flow [2024-11-17 07:57:10,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:10,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:10,116 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:10,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:10,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:10,317 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:10,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1602918881, now seen corresponding path program 1 times [2024-11-17 07:57:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453312074] [2024-11-17 07:57:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:10,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453312074] [2024-11-17 07:57:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453312074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067105949] [2024-11-17 07:57:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:10,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:10,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:10,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:57:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:10,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:57:10,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:10,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:11,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:11,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 07:57:11,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 07:57:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067105949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:11,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-17 07:57:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930263850] [2024-11-17 07:57:11,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:11,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 07:57:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 07:57:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-17 07:57:11,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:11,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 318 flow. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:11,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:11,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:11,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:12,013 INFO L124 PetriNetUnfolderBase]: 545/1032 cut-off events. [2024-11-17 07:57:12,014 INFO L125 PetriNetUnfolderBase]: For 1196/1196 co-relation queries the response was YES. [2024-11-17 07:57:12,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 1032 events. 545/1032 cut-off events. For 1196/1196 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4999 event pairs, 130 based on Foata normal form. 50/1037 useless extension candidates. Maximal degree in co-relation 2685. Up to 268 conditions per place. [2024-11-17 07:57:12,018 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 72 selfloop transitions, 26 changer transitions 4/108 dead transitions. [2024-11-17 07:57:12,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 702 flow [2024-11-17 07:57:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:57:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:57:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 213 transitions. [2024-11-17 07:57:12,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31555555555555553 [2024-11-17 07:57:12,020 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 318 flow. Second operand 15 states and 213 transitions. [2024-11-17 07:57:12,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 702 flow [2024-11-17 07:57:12,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 669 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-17 07:57:12,024 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 398 flow [2024-11-17 07:57:12,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=398, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2024-11-17 07:57:12,025 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-11-17 07:57:12,025 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 398 flow [2024-11-17 07:57:12,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:12,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:12,025 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:57:12,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:57:12,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:12,226 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:12,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2072767610, now seen corresponding path program 2 times [2024-11-17 07:57:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872335214] [2024-11-17 07:57:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872335214] [2024-11-17 07:57:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872335214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380654921] [2024-11-17 07:57:12,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:12,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:12,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:12,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:57:12,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:12,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:12,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:12,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:12,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380654921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:12,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:12,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:57:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835584699] [2024-11-17 07:57:12,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:12,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:57:12,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:57:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:57:12,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:12,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 398 flow. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:12,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:12,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:12,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:12,676 INFO L124 PetriNetUnfolderBase]: 546/1041 cut-off events. [2024-11-17 07:57:12,677 INFO L125 PetriNetUnfolderBase]: For 1838/1838 co-relation queries the response was YES. [2024-11-17 07:57:12,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1041 events. 546/1041 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5115 event pairs, 385 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 2928. Up to 895 conditions per place. [2024-11-17 07:57:12,682 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 37 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-11-17 07:57:12,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 61 transitions, 535 flow [2024-11-17 07:57:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 07:57:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 07:57:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-11-17 07:57:12,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24285714285714285 [2024-11-17 07:57:12,684 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 398 flow. Second operand 14 states and 153 transitions. [2024-11-17 07:57:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 61 transitions, 535 flow [2024-11-17 07:57:12,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 61 transitions, 486 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-11-17 07:57:12,689 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 404 flow [2024-11-17 07:57:12,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=404, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-11-17 07:57:12,692 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-11-17 07:57:12,692 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 404 flow [2024-11-17 07:57:12,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:12,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:12,693 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:12,705 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 07:57:12,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:12,898 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:12,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1109498287, now seen corresponding path program 1 times [2024-11-17 07:57:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017688467] [2024-11-17 07:57:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017688467] [2024-11-17 07:57:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017688467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977778997] [2024-11-17 07:57:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:13,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:13,086 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 07:57:13,087 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 07:57:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:13,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 07:57:13,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:13,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977778997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:13,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:13,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2024-11-17 07:57:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288350269] [2024-11-17 07:57:13,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:13,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 07:57:13,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 07:57:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-17 07:57:13,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:13,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 404 flow. Second operand has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 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 07:57:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:13,946 INFO L124 PetriNetUnfolderBase]: 435/866 cut-off events. [2024-11-17 07:57:13,946 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2024-11-17 07:57:13,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 866 events. 435/866 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4243 event pairs, 156 based on Foata normal form. 26/853 useless extension candidates. Maximal degree in co-relation 1989. Up to 268 conditions per place. [2024-11-17 07:57:13,949 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 30 selfloop transitions, 14 changer transitions 42/92 dead transitions. [2024-11-17 07:57:13,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 625 flow [2024-11-17 07:57:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:57:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:57:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 179 transitions. [2024-11-17 07:57:13,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.305982905982906 [2024-11-17 07:57:13,950 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 404 flow. Second operand 13 states and 179 transitions. [2024-11-17 07:57:13,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 625 flow [2024-11-17 07:57:13,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 544 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-17 07:57:13,953 INFO L231 Difference]: Finished difference. Result has 76 places, 45 transitions, 253 flow [2024-11-17 07:57:13,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=253, PETRI_PLACES=76, PETRI_TRANSITIONS=45} [2024-11-17 07:57:13,954 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-11-17 07:57:13,954 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 45 transitions, 253 flow [2024-11-17 07:57:13,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 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 07:57:13,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:13,954 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:13,967 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 07:57:14,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:14,155 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:14,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1560141491, now seen corresponding path program 2 times [2024-11-17 07:57:14,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:14,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678128602] [2024-11-17 07:57:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:14,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678128602] [2024-11-17 07:57:14,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678128602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:14,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921705217] [2024-11-17 07:57:14,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:14,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:14,214 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 07:57:14,215 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 07:57:14,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:57:14,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:14,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:57:14,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-17 07:57:14,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921705217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-11-17 07:57:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713711944] [2024-11-17 07:57:14,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:14,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:14,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:14,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 45 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:14,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:14,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:14,445 INFO L124 PetriNetUnfolderBase]: 456/884 cut-off events. [2024-11-17 07:57:14,446 INFO L125 PetriNetUnfolderBase]: For 2323/2323 co-relation queries the response was YES. [2024-11-17 07:57:14,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 884 events. 456/884 cut-off events. For 2323/2323 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4064 event pairs, 169 based on Foata normal form. 30/872 useless extension candidates. Maximal degree in co-relation 1409. Up to 280 conditions per place. [2024-11-17 07:57:14,450 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 48 selfloop transitions, 9 changer transitions 2/67 dead transitions. [2024-11-17 07:57:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 495 flow [2024-11-17 07:57:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-17 07:57:14,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-17 07:57:14,454 INFO L175 Difference]: Start difference. First operand has 76 places, 45 transitions, 253 flow. Second operand 4 states and 88 transitions. [2024-11-17 07:57:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 495 flow [2024-11-17 07:57:14,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 409 flow, removed 33 selfloop flow, removed 13 redundant places. [2024-11-17 07:57:14,458 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 288 flow [2024-11-17 07:57:14,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-17 07:57:14,459 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-11-17 07:57:14,459 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 288 flow [2024-11-17 07:57:14,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:14,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:14,459 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:14,472 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 07:57:14,659 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,SelfDestructingSolverStorable10 [2024-11-17 07:57:14,660 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:14,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1410401906, now seen corresponding path program 2 times [2024-11-17 07:57:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:14,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508799141] [2024-11-17 07:57:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:14,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:15,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508799141] [2024-11-17 07:57:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508799141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102061329] [2024-11-17 07:57:15,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:15,587 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 07:57:15,588 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 07:57:15,646 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:15,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:15,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:15,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:15,736 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 07:57:15,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102061329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:15,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2024-11-17 07:57:15,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271714669] [2024-11-17 07:57:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:15,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:57:15,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:15,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:15,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:15,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:15,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:15,840 INFO L124 PetriNetUnfolderBase]: 694/1322 cut-off events. [2024-11-17 07:57:15,841 INFO L125 PetriNetUnfolderBase]: For 2533/2533 co-relation queries the response was YES. [2024-11-17 07:57:15,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1322 events. 694/1322 cut-off events. For 2533/2533 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6860 event pairs, 116 based on Foata normal form. 20/1282 useless extension candidates. Maximal degree in co-relation 1692. Up to 610 conditions per place. [2024-11-17 07:57:15,847 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 57 selfloop transitions, 7 changer transitions 2/74 dead transitions. [2024-11-17 07:57:15,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 539 flow [2024-11-17 07:57:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-17 07:57:15,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-17 07:57:15,848 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 288 flow. Second operand 4 states and 85 transitions. [2024-11-17 07:57:15,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 539 flow [2024-11-17 07:57:15,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 539 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:15,851 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 367 flow [2024-11-17 07:57:15,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-17 07:57:15,852 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-11-17 07:57:15,854 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 367 flow [2024-11-17 07:57:15,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:15,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:15,854 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:15,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:57:16,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:16,055 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:16,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1410401907, now seen corresponding path program 2 times [2024-11-17 07:57:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118932302] [2024-11-17 07:57:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118932302] [2024-11-17 07:57:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118932302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376266936] [2024-11-17 07:57:16,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:16,826 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 07:57:16,827 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 07:57:16,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:16,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:16,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:57:16,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:16,963 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 07:57:16,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376266936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:16,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2024-11-17 07:57:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892033200] [2024-11-17 07:57:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:16,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:57:16,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:16,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:16,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:16,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:16,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:17,059 INFO L124 PetriNetUnfolderBase]: 660/1268 cut-off events. [2024-11-17 07:57:17,060 INFO L125 PetriNetUnfolderBase]: For 2913/2913 co-relation queries the response was YES. [2024-11-17 07:57:17,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 1268 events. 660/1268 cut-off events. For 2913/2913 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6594 event pairs, 98 based on Foata normal form. 20/1228 useless extension candidates. Maximal degree in co-relation 1780. Up to 610 conditions per place. [2024-11-17 07:57:17,065 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 56 selfloop transitions, 7 changer transitions 2/73 dead transitions. [2024-11-17 07:57:17,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 555 flow [2024-11-17 07:57:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-17 07:57:17,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-17 07:57:17,067 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 367 flow. Second operand 4 states and 84 transitions. [2024-11-17 07:57:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 555 flow [2024-11-17 07:57:17,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 544 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:17,070 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 377 flow [2024-11-17 07:57:17,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=377, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-17 07:57:17,071 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-17 07:57:17,071 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 377 flow [2024-11-17 07:57:17,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:17,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:17,071 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 07:57:17,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-17 07:57:17,272 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1410402961, now seen corresponding path program 1 times [2024-11-17 07:57:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276231306] [2024-11-17 07:57:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:17,309 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 07:57:17,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:17,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276231306] [2024-11-17 07:57:17,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276231306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002391142] [2024-11-17 07:57:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:17,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:57:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:57:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:57:17,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-17 07:57:17,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:17,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:17,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-17 07:57:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:17,415 INFO L124 PetriNetUnfolderBase]: 665/1185 cut-off events. [2024-11-17 07:57:17,416 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2024-11-17 07:57:17,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 1185 events. 665/1185 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5374 event pairs, 417 based on Foata normal form. 12/1195 useless extension candidates. Maximal degree in co-relation 2332. Up to 953 conditions per place. [2024-11-17 07:57:17,420 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 52 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-11-17 07:57:17,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 503 flow [2024-11-17 07:57:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:57:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:57:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-17 07:57:17,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-17 07:57:17,421 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 377 flow. Second operand 3 states and 60 transitions. [2024-11-17 07:57:17,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 503 flow [2024-11-17 07:57:17,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 487 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:57:17,423 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 337 flow [2024-11-17 07:57:17,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-11-17 07:57:17,424 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-17 07:57:17,424 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 337 flow [2024-11-17 07:57:17,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:17,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:17,424 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:17,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:57:17,424 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:17,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:17,425 INFO L85 PathProgramCache]: Analyzing trace with hash 180563524, now seen corresponding path program 1 times [2024-11-17 07:57:17,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:17,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010921532] [2024-11-17 07:57:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:17,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:57:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010921532] [2024-11-17 07:57:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010921532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016155973] [2024-11-17 07:57:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:17,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:17,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:17,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:17,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:17,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:17,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:17,622 INFO L124 PetriNetUnfolderBase]: 1014/1764 cut-off events. [2024-11-17 07:57:17,622 INFO L125 PetriNetUnfolderBase]: For 4891/4891 co-relation queries the response was YES. [2024-11-17 07:57:17,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5641 conditions, 1764 events. 1014/1764 cut-off events. For 4891/4891 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8060 event pairs, 148 based on Foata normal form. 88/1850 useless extension candidates. Maximal degree in co-relation 3942. Up to 849 conditions per place. [2024-11-17 07:57:17,630 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 63 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-17 07:57:17,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 611 flow [2024-11-17 07:57:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-17 07:57:17,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-11-17 07:57:17,631 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 337 flow. Second operand 4 states and 71 transitions. [2024-11-17 07:57:17,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 611 flow [2024-11-17 07:57:17,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:17,634 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 358 flow [2024-11-17 07:57:17,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-17 07:57:17,634 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-11-17 07:57:17,634 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 358 flow [2024-11-17 07:57:17,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:17,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:17,634 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:17,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:57:17,635 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:17,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:17,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1985726600, now seen corresponding path program 1 times [2024-11-17 07:57:17,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:17,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236923846] [2024-11-17 07:57:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:17,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236923846] [2024-11-17 07:57:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236923846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880470371] [2024-11-17 07:57:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:18,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:18,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:57:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:18,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:57:18,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:18,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:18,640 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:18,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 07:57:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:19,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880470371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:19,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-17 07:57:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320475970] [2024-11-17 07:57:19,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:19,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 07:57:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 07:57:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 07:57:19,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:19,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 358 flow. Second operand has 35 states, 35 states have (on average 9.971428571428572) internal successors, (349), 35 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:19,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:19,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:21,119 INFO L124 PetriNetUnfolderBase]: 1338/2504 cut-off events. [2024-11-17 07:57:21,119 INFO L125 PetriNetUnfolderBase]: For 8454/8462 co-relation queries the response was YES. [2024-11-17 07:57:21,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8161 conditions, 2504 events. 1338/2504 cut-off events. For 8454/8462 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13851 event pairs, 471 based on Foata normal form. 96/2599 useless extension candidates. Maximal degree in co-relation 4300. Up to 866 conditions per place. [2024-11-17 07:57:21,137 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 135 selfloop transitions, 43 changer transitions 14/200 dead transitions. [2024-11-17 07:57:21,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 200 transitions, 1353 flow [2024-11-17 07:57:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-17 07:57:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-17 07:57:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 424 transitions. [2024-11-17 07:57:21,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32490421455938695 [2024-11-17 07:57:21,141 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 358 flow. Second operand 29 states and 424 transitions. [2024-11-17 07:57:21,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 200 transitions, 1353 flow [2024-11-17 07:57:21,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 200 transitions, 1347 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:21,147 INFO L231 Difference]: Finished difference. Result has 108 places, 81 transitions, 824 flow [2024-11-17 07:57:21,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=824, PETRI_PLACES=108, PETRI_TRANSITIONS=81} [2024-11-17 07:57:21,147 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-11-17 07:57:21,148 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 81 transitions, 824 flow [2024-11-17 07:57:21,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.971428571428572) internal successors, (349), 35 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:21,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:21,148 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:21,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 07:57:21,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 07:57:21,349 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:21,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1733766447, now seen corresponding path program 1 times [2024-11-17 07:57:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:21,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388418894] [2024-11-17 07:57:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:21,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:22,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:22,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388418894] [2024-11-17 07:57:22,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388418894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:22,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275546736] [2024-11-17 07:57:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:22,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:22,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:22,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:57:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:22,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 07:57:22,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:22,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:22,721 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-17 07:57:22,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 54 [2024-11-17 07:57:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275546736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:23,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:23,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-17 07:57:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859391179] [2024-11-17 07:57:23,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:23,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-17 07:57:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-17 07:57:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2024-11-17 07:57:23,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:23,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 81 transitions, 824 flow. Second operand has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 36 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:23,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:23,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:23,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:25,066 INFO L124 PetriNetUnfolderBase]: 1408/2656 cut-off events. [2024-11-17 07:57:25,067 INFO L125 PetriNetUnfolderBase]: For 22252/22252 co-relation queries the response was YES. [2024-11-17 07:57:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10647 conditions, 2656 events. 1408/2656 cut-off events. For 22252/22252 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14994 event pairs, 513 based on Foata normal form. 52/2707 useless extension candidates. Maximal degree in co-relation 8137. Up to 866 conditions per place. [2024-11-17 07:57:25,082 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 110 selfloop transitions, 45 changer transitions 7/170 dead transitions. [2024-11-17 07:57:25,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 170 transitions, 1554 flow [2024-11-17 07:57:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:57:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:57:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 332 transitions. [2024-11-17 07:57:25,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3074074074074074 [2024-11-17 07:57:25,085 INFO L175 Difference]: Start difference. First operand has 108 places, 81 transitions, 824 flow. Second operand 24 states and 332 transitions. [2024-11-17 07:57:25,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 170 transitions, 1554 flow [2024-11-17 07:57:25,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 170 transitions, 1290 flow, removed 104 selfloop flow, removed 13 redundant places. [2024-11-17 07:57:25,105 INFO L231 Difference]: Finished difference. Result has 122 places, 85 transitions, 829 flow [2024-11-17 07:57:25,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=829, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2024-11-17 07:57:25,106 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-11-17 07:57:25,106 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 829 flow [2024-11-17 07:57:25,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 36 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:25,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:25,107 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:25,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:57:25,307 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,SelfDestructingSolverStorable16 [2024-11-17 07:57:25,308 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:25,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1484282787, now seen corresponding path program 2 times [2024-11-17 07:57:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433049978] [2024-11-17 07:57:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:25,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:25,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433049978] [2024-11-17 07:57:25,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433049978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:25,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639471168] [2024-11-17 07:57:25,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:25,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:25,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:57:25,939 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:57:25,939 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:25,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 07:57:25,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:26,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:26,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:26,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-17 07:57:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:27,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639471168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:27,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:27,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 33 [2024-11-17 07:57:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352368490] [2024-11-17 07:57:27,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:27,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 07:57:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 07:57:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 07:57:27,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:27,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 829 flow. Second operand has 35 states, 35 states have (on average 9.971428571428572) internal successors, (349), 35 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:27,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:27,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:27,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:28,047 INFO L124 PetriNetUnfolderBase]: 864/1622 cut-off events. [2024-11-17 07:57:28,047 INFO L125 PetriNetUnfolderBase]: For 15665/15665 co-relation queries the response was YES. [2024-11-17 07:57:28,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6683 conditions, 1622 events. 864/1622 cut-off events. For 15665/15665 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7833 event pairs, 209 based on Foata normal form. 48/1669 useless extension candidates. Maximal degree in co-relation 6646. Up to 574 conditions per place. [2024-11-17 07:57:28,056 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 101 selfloop transitions, 20 changer transitions 8/137 dead transitions. [2024-11-17 07:57:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 137 transitions, 1140 flow [2024-11-17 07:57:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:57:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:57:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 273 transitions. [2024-11-17 07:57:28,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3192982456140351 [2024-11-17 07:57:28,058 INFO L175 Difference]: Start difference. First operand has 122 places, 85 transitions, 829 flow. Second operand 19 states and 273 transitions. [2024-11-17 07:57:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 137 transitions, 1140 flow [2024-11-17 07:57:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 137 transitions, 980 flow, removed 60 selfloop flow, removed 22 redundant places. [2024-11-17 07:57:28,070 INFO L231 Difference]: Finished difference. Result has 106 places, 63 transitions, 541 flow [2024-11-17 07:57:28,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=541, PETRI_PLACES=106, PETRI_TRANSITIONS=63} [2024-11-17 07:57:28,071 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-11-17 07:57:28,071 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 63 transitions, 541 flow [2024-11-17 07:57:28,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.971428571428572) internal successors, (349), 35 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:28,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:28,071 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:28,084 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 07:57:28,275 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,SelfDestructingSolverStorable17 [2024-11-17 07:57:28,275 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:28,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1484282786, now seen corresponding path program 2 times [2024-11-17 07:57:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142624127] [2024-11-17 07:57:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142624127] [2024-11-17 07:57:28,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142624127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861889391] [2024-11-17 07:57:28,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:28,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:28,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:57:28,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:57:28,794 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:57:28,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:28,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 07:57:28,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:28,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 07:57:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:29,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:29,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-17 07:57:29,821 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:29,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-17 07:57:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861889391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:29,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:29,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 31 [2024-11-17 07:57:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783365550] [2024-11-17 07:57:29,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:29,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-17 07:57:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-17 07:57:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-17 07:57:30,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:30,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 63 transitions, 541 flow. Second operand has 33 states, 33 states have (on average 10.090909090909092) internal successors, (333), 33 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:30,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:30,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:30,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:31,005 INFO L124 PetriNetUnfolderBase]: 844/1580 cut-off events. [2024-11-17 07:57:31,005 INFO L125 PetriNetUnfolderBase]: For 10657/10657 co-relation queries the response was YES. [2024-11-17 07:57:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 1580 events. 844/1580 cut-off events. For 10657/10657 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7720 event pairs, 543 based on Foata normal form. 16/1593 useless extension candidates. Maximal degree in co-relation 5928. Up to 1038 conditions per place. [2024-11-17 07:57:31,013 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 40 selfloop transitions, 13 changer transitions 40/101 dead transitions. [2024-11-17 07:57:31,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 101 transitions, 834 flow [2024-11-17 07:57:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:57:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:57:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 194 transitions. [2024-11-17 07:57:31,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2874074074074074 [2024-11-17 07:57:31,014 INFO L175 Difference]: Start difference. First operand has 106 places, 63 transitions, 541 flow. Second operand 15 states and 194 transitions. [2024-11-17 07:57:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 101 transitions, 834 flow [2024-11-17 07:57:31,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 766 flow, removed 16 selfloop flow, removed 16 redundant places. [2024-11-17 07:57:31,024 INFO L231 Difference]: Finished difference. Result has 102 places, 52 transitions, 415 flow [2024-11-17 07:57:31,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=415, PETRI_PLACES=102, PETRI_TRANSITIONS=52} [2024-11-17 07:57:31,025 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-11-17 07:57:31,025 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 52 transitions, 415 flow [2024-11-17 07:57:31,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.090909090909092) internal successors, (333), 33 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:31,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:31,025 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:31,038 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 07:57:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:31,230 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:31,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash -452014890, now seen corresponding path program 3 times [2024-11-17 07:57:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141868132] [2024-11-17 07:57:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141868132] [2024-11-17 07:57:32,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141868132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485361181] [2024-11-17 07:57:32,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:57:32,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:32,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:32,063 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 07:57:32,064 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 07:57:32,142 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 07:57:32,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:32,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:57:32,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:32,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:32,307 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:32,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 07:57:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485361181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:32,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:32,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 4] total 22 [2024-11-17 07:57:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509451063] [2024-11-17 07:57:32,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:32,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 07:57:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 07:57:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-11-17 07:57:32,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:32,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 52 transitions, 415 flow. Second operand has 24 states, 24 states have (on average 10.791666666666666) internal successors, (259), 24 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:32,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:32,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:32,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:33,306 INFO L124 PetriNetUnfolderBase]: 1118/2105 cut-off events. [2024-11-17 07:57:33,306 INFO L125 PetriNetUnfolderBase]: For 16236/16236 co-relation queries the response was YES. [2024-11-17 07:57:33,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 2105 events. 1118/2105 cut-off events. For 16236/16236 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10732 event pairs, 259 based on Foata normal form. 60/2160 useless extension candidates. Maximal degree in co-relation 7739. Up to 581 conditions per place. [2024-11-17 07:57:33,317 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 114 selfloop transitions, 36 changer transitions 10/168 dead transitions. [2024-11-17 07:57:33,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 168 transitions, 1359 flow [2024-11-17 07:57:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 07:57:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-17 07:57:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 358 transitions. [2024-11-17 07:57:33,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31822222222222224 [2024-11-17 07:57:33,323 INFO L175 Difference]: Start difference. First operand has 102 places, 52 transitions, 415 flow. Second operand 25 states and 358 transitions. [2024-11-17 07:57:33,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 168 transitions, 1359 flow [2024-11-17 07:57:33,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1162 flow, removed 66 selfloop flow, removed 16 redundant places. [2024-11-17 07:57:33,338 INFO L231 Difference]: Finished difference. Result has 104 places, 69 transitions, 637 flow [2024-11-17 07:57:33,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=637, PETRI_PLACES=104, PETRI_TRANSITIONS=69} [2024-11-17 07:57:33,339 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-11-17 07:57:33,339 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 69 transitions, 637 flow [2024-11-17 07:57:33,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.791666666666666) internal successors, (259), 24 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:33,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:33,339 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:33,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 07:57:33,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:33,540 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:33,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1272928645, now seen corresponding path program 3 times [2024-11-17 07:57:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:33,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412280381] [2024-11-17 07:57:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:34,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412280381] [2024-11-17 07:57:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412280381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228504671] [2024-11-17 07:57:34,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:57:34,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:34,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:34,512 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 07:57:34,512 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 07:57:34,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 07:57:34,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:34,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 07:57:34,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:34,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:34,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:34,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-17 07:57:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228504671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:34,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:34,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 21 [2024-11-17 07:57:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933563148] [2024-11-17 07:57:34,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:34,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 07:57:34,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 07:57:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-17 07:57:34,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:34,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 69 transitions, 637 flow. Second operand has 23 states, 23 states have (on average 10.91304347826087) internal successors, (251), 23 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:34,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:34,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:35,685 INFO L124 PetriNetUnfolderBase]: 1506/2855 cut-off events. [2024-11-17 07:57:35,686 INFO L125 PetriNetUnfolderBase]: For 13099/13099 co-relation queries the response was YES. [2024-11-17 07:57:35,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10062 conditions, 2855 events. 1506/2855 cut-off events. For 13099/13099 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15056 event pairs, 282 based on Foata normal form. 60/2914 useless extension candidates. Maximal degree in co-relation 10033. Up to 989 conditions per place. [2024-11-17 07:57:35,704 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 136 selfloop transitions, 38 changer transitions 16/198 dead transitions. [2024-11-17 07:57:35,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 198 transitions, 1566 flow [2024-11-17 07:57:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 07:57:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-17 07:57:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 375 transitions. [2024-11-17 07:57:35,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-17 07:57:35,706 INFO L175 Difference]: Start difference. First operand has 104 places, 69 transitions, 637 flow. Second operand 25 states and 375 transitions. [2024-11-17 07:57:35,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 198 transitions, 1566 flow [2024-11-17 07:57:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 198 transitions, 1457 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-11-17 07:57:35,721 INFO L231 Difference]: Finished difference. Result has 126 places, 82 transitions, 805 flow [2024-11-17 07:57:35,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=805, PETRI_PLACES=126, PETRI_TRANSITIONS=82} [2024-11-17 07:57:35,726 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-11-17 07:57:35,726 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 82 transitions, 805 flow [2024-11-17 07:57:35,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.91304347826087) internal successors, (251), 23 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:35,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:35,726 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:35,742 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 07:57:35,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:35,927 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:35,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1023444984, now seen corresponding path program 4 times [2024-11-17 07:57:35,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865026938] [2024-11-17 07:57:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865026938] [2024-11-17 07:57:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865026938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129848767] [2024-11-17 07:57:36,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:57:36,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:36,838 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 07:57:36,839 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 07:57:36,905 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:57:36,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:36,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 07:57:36,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:37,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:37,100 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:37,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 07:57:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:37,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129848767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:37,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:37,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 4] total 23 [2024-11-17 07:57:37,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325607053] [2024-11-17 07:57:37,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:37,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 07:57:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:37,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 07:57:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-17 07:57:37,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:37,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 82 transitions, 805 flow. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:37,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:37,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:37,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:38,255 INFO L124 PetriNetUnfolderBase]: 1881/3538 cut-off events. [2024-11-17 07:57:38,255 INFO L125 PetriNetUnfolderBase]: For 19791/19791 co-relation queries the response was YES. [2024-11-17 07:57:38,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13066 conditions, 3538 events. 1881/3538 cut-off events. For 19791/19791 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19332 event pairs, 256 based on Foata normal form. 80/3617 useless extension candidates. Maximal degree in co-relation 13028. Up to 749 conditions per place. [2024-11-17 07:57:38,273 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 116 selfloop transitions, 49 changer transitions 6/179 dead transitions. [2024-11-17 07:57:38,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 179 transitions, 1662 flow [2024-11-17 07:57:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 07:57:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-17 07:57:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 319 transitions. [2024-11-17 07:57:38,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-11-17 07:57:38,274 INFO L175 Difference]: Start difference. First operand has 126 places, 82 transitions, 805 flow. Second operand 22 states and 319 transitions. [2024-11-17 07:57:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 179 transitions, 1662 flow [2024-11-17 07:57:38,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 179 transitions, 1527 flow, removed 30 selfloop flow, removed 19 redundant places. [2024-11-17 07:57:38,304 INFO L231 Difference]: Finished difference. Result has 129 places, 88 transitions, 881 flow [2024-11-17 07:57:38,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=881, PETRI_PLACES=129, PETRI_TRANSITIONS=88} [2024-11-17 07:57:38,305 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-11-17 07:57:38,305 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 88 transitions, 881 flow [2024-11-17 07:57:38,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:38,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:38,305 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:38,318 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 07:57:38,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:38,507 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:38,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash 523804616, now seen corresponding path program 4 times [2024-11-17 07:57:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940533306] [2024-11-17 07:57:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940533306] [2024-11-17 07:57:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940533306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838969244] [2024-11-17 07:57:38,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 07:57:38,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:38,568 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 07:57:38,569 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 07:57:38,633 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 07:57:38,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:38,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:38,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 07:57:38,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:57:38,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838969244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:38,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:38,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 5] total 9 [2024-11-17 07:57:38,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406923972] [2024-11-17 07:57:38,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:38,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:57:38,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:38,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:57:38,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:57:38,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-17 07:57:38,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 88 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 16.181818181818183) internal successors, (178), 11 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:38,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:38,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-17 07:57:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:39,247 INFO L124 PetriNetUnfolderBase]: 2686/5123 cut-off events. [2024-11-17 07:57:39,247 INFO L125 PetriNetUnfolderBase]: For 27772/27772 co-relation queries the response was YES. [2024-11-17 07:57:39,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19278 conditions, 5123 events. 2686/5123 cut-off events. For 27772/27772 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30443 event pairs, 610 based on Foata normal form. 60/5181 useless extension candidates. Maximal degree in co-relation 19242. Up to 1883 conditions per place. [2024-11-17 07:57:39,273 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 74 selfloop transitions, 47 changer transitions 2/133 dead transitions. [2024-11-17 07:57:39,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 133 transitions, 1562 flow [2024-11-17 07:57:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:57:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:57:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-17 07:57:39,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-11-17 07:57:39,274 INFO L175 Difference]: Start difference. First operand has 129 places, 88 transitions, 881 flow. Second operand 5 states and 111 transitions. [2024-11-17 07:57:39,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 133 transitions, 1562 flow [2024-11-17 07:57:39,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 1422 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-11-17 07:57:39,304 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 1132 flow [2024-11-17 07:57:39,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1132, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-11-17 07:57:39,305 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-11-17 07:57:39,305 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 1132 flow [2024-11-17 07:57:39,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.181818181818183) internal successors, (178), 11 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:39,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:39,305 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:39,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-17 07:57:39,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:39,506 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:39,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -952567189, now seen corresponding path program 5 times [2024-11-17 07:57:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228910468] [2024-11-17 07:57:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:40,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228910468] [2024-11-17 07:57:40,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228910468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:40,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421209834] [2024-11-17 07:57:40,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 07:57:40,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:40,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:40,249 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 07:57:40,250 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 07:57:40,327 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-17 07:57:40,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:40,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 07:57:40,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:41,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:41,425 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2024-11-17 07:57:41,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 76 [2024-11-17 07:57:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421209834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:42,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:42,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 45 [2024-11-17 07:57:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454161898] [2024-11-17 07:57:42,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:42,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-17 07:57:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-17 07:57:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1764, Unknown=0, NotChecked=0, Total=2162 [2024-11-17 07:57:42,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:42,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 1132 flow. Second operand has 47 states, 47 states have (on average 9.97872340425532) internal successors, (469), 47 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 07:57:42,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:42,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:42,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:45,976 INFO L124 PetriNetUnfolderBase]: 5355/9890 cut-off events. [2024-11-17 07:57:45,976 INFO L125 PetriNetUnfolderBase]: For 77155/77155 co-relation queries the response was YES. [2024-11-17 07:57:46,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40672 conditions, 9890 events. 5355/9890 cut-off events. For 77155/77155 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 66422 event pairs, 873 based on Foata normal form. 250/10127 useless extension candidates. Maximal degree in co-relation 40634. Up to 2804 conditions per place. [2024-11-17 07:57:46,041 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 354 selfloop transitions, 162 changer transitions 29/553 dead transitions. [2024-11-17 07:57:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 553 transitions, 5445 flow [2024-11-17 07:57:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-17 07:57:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-17 07:57:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 979 transitions. [2024-11-17 07:57:46,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.345326278659612 [2024-11-17 07:57:46,045 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 1132 flow. Second operand 63 states and 979 transitions. [2024-11-17 07:57:46,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 553 transitions, 5445 flow [2024-11-17 07:57:46,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 553 transitions, 5221 flow, removed 112 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:46,282 INFO L231 Difference]: Finished difference. Result has 213 places, 239 transitions, 3672 flow [2024-11-17 07:57:46,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=3672, PETRI_PLACES=213, PETRI_TRANSITIONS=239} [2024-11-17 07:57:46,283 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-11-17 07:57:46,283 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 239 transitions, 3672 flow [2024-11-17 07:57:46,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 9.97872340425532) internal successors, (469), 47 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 07:57:46,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:46,287 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:46,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-17 07:57:46,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,488 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:46,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2041431220, now seen corresponding path program 5 times [2024-11-17 07:57:46,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538834890] [2024-11-17 07:57:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538834890] [2024-11-17 07:57:46,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538834890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763128174] [2024-11-17 07:57:46,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 07:57:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:46,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:46,969 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 07:57:46,970 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 07:57:47,040 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-17 07:57:47,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:47,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 07:57:47,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:47,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:47,539 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-17 07:57:47,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 07:57:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:48,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763128174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:48,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:48,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2024-11-17 07:57:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753819571] [2024-11-17 07:57:48,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:48,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-17 07:57:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:48,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-17 07:57:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2024-11-17 07:57:48,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:48,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 239 transitions, 3672 flow. Second operand has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:48,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:52,843 INFO L124 PetriNetUnfolderBase]: 7302/13739 cut-off events. [2024-11-17 07:57:52,843 INFO L125 PetriNetUnfolderBase]: For 455859/455859 co-relation queries the response was YES. [2024-11-17 07:57:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78621 conditions, 13739 events. 7302/13739 cut-off events. For 455859/455859 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 98159 event pairs, 1597 based on Foata normal form. 554/14274 useless extension candidates. Maximal degree in co-relation 78553. Up to 3184 conditions per place. [2024-11-17 07:57:52,965 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 239 selfloop transitions, 252 changer transitions 24/523 dead transitions. [2024-11-17 07:57:52,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 523 transitions, 8189 flow [2024-11-17 07:57:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-17 07:57:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-17 07:57:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 556 transitions. [2024-11-17 07:57:52,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31680911680911683 [2024-11-17 07:57:52,971 INFO L175 Difference]: Start difference. First operand has 213 places, 239 transitions, 3672 flow. Second operand 39 states and 556 transitions. [2024-11-17 07:57:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 523 transitions, 8189 flow [2024-11-17 07:57:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 523 transitions, 7192 flow, removed 460 selfloop flow, removed 25 redundant places. [2024-11-17 07:57:53,690 INFO L231 Difference]: Finished difference. Result has 231 places, 375 transitions, 6371 flow [2024-11-17 07:57:53,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6371, PETRI_PLACES=231, PETRI_TRANSITIONS=375} [2024-11-17 07:57:53,691 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-11-17 07:57:53,691 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 375 transitions, 6371 flow [2024-11-17 07:57:53,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:53,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:53,692 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:53,704 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 07:57:53,892 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,SelfDestructingSolverStorable24 [2024-11-17 07:57:53,892 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:57:53,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 334829222, now seen corresponding path program 6 times [2024-11-17 07:57:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:53,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249530327] [2024-11-17 07:57:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:53,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249530327] [2024-11-17 07:57:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249530327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561787091] [2024-11-17 07:57:54,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 07:57:54,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:54,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:54,622 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 07:57:54,623 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 07:57:54,700 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-17 07:57:54,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:54,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-17 07:57:54,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:54,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:57:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:55,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:56,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-11-17 07:57:56,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:57:56,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 327 treesize of output 311 [2024-11-17 07:57:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:59,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561787091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:59,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:59,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 46 [2024-11-17 07:57:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290246676] [2024-11-17 07:57:59,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:59,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 07:57:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:59,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 07:57:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 07:57:59,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:57:59,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 375 transitions, 6371 flow. Second operand has 48 states, 48 states have (on average 9.9375) internal successors, (477), 48 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:57:59,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:59,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:57:59,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:05,535 INFO L124 PetriNetUnfolderBase]: 8236/15553 cut-off events. [2024-11-17 07:58:05,535 INFO L125 PetriNetUnfolderBase]: For 460012/460012 co-relation queries the response was YES. [2024-11-17 07:58:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89378 conditions, 15553 events. 8236/15553 cut-off events. For 460012/460012 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 114537 event pairs, 2713 based on Foata normal form. 86/15638 useless extension candidates. Maximal degree in co-relation 89305. Up to 9837 conditions per place. [2024-11-17 07:58:05,652 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 468 selfloop transitions, 135 changer transitions 32/643 dead transitions. [2024-11-17 07:58:05,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 643 transitions, 10270 flow [2024-11-17 07:58:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-17 07:58:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-17 07:58:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 689 transitions. [2024-11-17 07:58:05,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-11-17 07:58:05,659 INFO L175 Difference]: Start difference. First operand has 231 places, 375 transitions, 6371 flow. Second operand 52 states and 689 transitions. [2024-11-17 07:58:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 643 transitions, 10270 flow [2024-11-17 07:58:07,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 643 transitions, 7754 flow, removed 1223 selfloop flow, removed 22 redundant places. [2024-11-17 07:58:07,168 INFO L231 Difference]: Finished difference. Result has 271 places, 450 transitions, 6328 flow [2024-11-17 07:58:07,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6328, PETRI_PLACES=271, PETRI_TRANSITIONS=450} [2024-11-17 07:58:07,169 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-11-17 07:58:07,169 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 450 transitions, 6328 flow [2024-11-17 07:58:07,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 9.9375) internal successors, (477), 48 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:07,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:07,170 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:07,183 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 07:58:07,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-17 07:58:07,375 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:58:07,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1644699665, now seen corresponding path program 6 times [2024-11-17 07:58:07,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:07,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818068851] [2024-11-17 07:58:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:07,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:08,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:08,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818068851] [2024-11-17 07:58:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818068851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:08,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812067712] [2024-11-17 07:58:08,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 07:58:08,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:08,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:08,059 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:08,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-17 07:58:08,162 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-17 07:58:08,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:58:08,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-17 07:58:08,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:08,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:58:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:08,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:09,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2024-11-17 07:58:09,941 INFO L349 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2024-11-17 07:58:09,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 295 treesize of output 253 [2024-11-17 07:58:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812067712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:11,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2024-11-17 07:58:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817919665] [2024-11-17 07:58:11,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:11,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-17 07:58:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-17 07:58:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1805, Unknown=0, NotChecked=0, Total=2070 [2024-11-17 07:58:11,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:58:11,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 450 transitions, 6328 flow. Second operand has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:11,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:11,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:58:11,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:17,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:58:19,974 INFO L124 PetriNetUnfolderBase]: 9119/17184 cut-off events. [2024-11-17 07:58:19,975 INFO L125 PetriNetUnfolderBase]: For 182061/182061 co-relation queries the response was YES. [2024-11-17 07:58:20,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75039 conditions, 17184 events. 9119/17184 cut-off events. For 182061/182061 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 128331 event pairs, 3391 based on Foata normal form. 56/17227 useless extension candidates. Maximal degree in co-relation 74958. Up to 11393 conditions per place. [2024-11-17 07:58:20,103 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 565 selfloop transitions, 117 changer transitions 20/710 dead transitions. [2024-11-17 07:58:20,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 710 transitions, 9255 flow [2024-11-17 07:58:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-17 07:58:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-17 07:58:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 659 transitions. [2024-11-17 07:58:20,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3183574879227053 [2024-11-17 07:58:20,104 INFO L175 Difference]: Start difference. First operand has 271 places, 450 transitions, 6328 flow. Second operand 46 states and 659 transitions. [2024-11-17 07:58:20,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 710 transitions, 9255 flow [2024-11-17 07:58:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 710 transitions, 8927 flow, removed 135 selfloop flow, removed 24 redundant places. [2024-11-17 07:58:21,029 INFO L231 Difference]: Finished difference. Result has 302 places, 488 transitions, 7065 flow [2024-11-17 07:58:21,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5981, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7065, PETRI_PLACES=302, PETRI_TRANSITIONS=488} [2024-11-17 07:58:21,030 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-11-17 07:58:21,030 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 488 transitions, 7065 flow [2024-11-17 07:58:21,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:21,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:21,031 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:21,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-17 07:58:21,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-17 07:58:21,234 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-17 07:58:21,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash 416141821, now seen corresponding path program 7 times [2024-11-17 07:58:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715488092] [2024-11-17 07:58:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715488092] [2024-11-17 07:58:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715488092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834641548] [2024-11-17 07:58:21,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 07:58:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:21,906 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:58:21,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-17 07:58:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:21,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-17 07:58:21,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:22,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 07:58:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:22,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:23,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2024-11-17 07:58:23,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:58:23,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 286 treesize of output 249 [2024-11-17 07:58:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834641548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:25,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:25,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 46 [2024-11-17 07:58:25,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989112910] [2024-11-17 07:58:25,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:25,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 07:58:25,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 07:58:25,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 07:58:25,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-17 07:58:25,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 488 transitions, 7065 flow. Second operand has 48 states, 48 states have (on average 9.9375) internal successors, (477), 48 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:25,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:25,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-17 07:58:25,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand