./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-12 00:08:14,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:08:14,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:08:14,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:08:14,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:08:14,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:08:14,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:08:14,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:08:14,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:08:14,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:08:14,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:08:14,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:08:14,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:08:14,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:08:14,119 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:08:14,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:08:14,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:08:14,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:08:14,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:08:14,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:08:14,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:08:14,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:08:14,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:08:14,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:08:14,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:08:14,128 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:08:14,128 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:08:14,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:08:14,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:08:14,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:08:14,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:08:14,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:08:14,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:08:14,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:08:14,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:14,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:08:14,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:08:14,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:08:14,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:08:14,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:08:14,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:08:14,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:08:14,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:08:14,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:08:14,133 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-10-12 00:08:14,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:08:14,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:08:14,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:08:14,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:08:14,404 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:08:14,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-10-12 00:08:15,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:08:15,883 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:08:15,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-10-12 00:08:15,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20d282331/e1b02f84f6cc497ea49001bd62dbfb6b/FLAGa6635a9ed [2024-10-12 00:08:15,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/20d282331/e1b02f84f6cc497ea49001bd62dbfb6b [2024-10-12 00:08:15,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:08:15,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:08:15,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:15,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:08:15,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:08:15,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:15" (1/1) ... [2024-10-12 00:08:15,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fc4b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:15, skipping insertion in model container [2024-10-12 00:08:15,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:15" (1/1) ... [2024-10-12 00:08:15,952 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:08:16,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:16,150 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:08:16,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:16,196 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:08:16,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16 WrapperNode [2024-10-12 00:08:16,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:16,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:16,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:08:16,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:08:16,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,231 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 151 [2024-10-12 00:08:16,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:16,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:08:16,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:08:16,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:08:16,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,259 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]. [2024-10-12 00:08:16,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:08:16,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:08:16,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:08:16,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:08:16,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (1/1) ... [2024-10-12 00:08:16,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:16,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:08:16,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:08:16,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:08:16,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:08:16,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:08:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:08:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:08:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:08:16,350 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:08:16,434 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:08:16,435 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:08:16,635 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:08:16,635 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:08:16,835 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:08:16,835 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:08:16,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:16 BoogieIcfgContainer [2024-10-12 00:08:16,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:08:16,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:08:16,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:08:16,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:08:16,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:08:15" (1/3) ... [2024-10-12 00:08:16,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54471b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:16, skipping insertion in model container [2024-10-12 00:08:16,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:16" (2/3) ... [2024-10-12 00:08:16,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54471b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:16, skipping insertion in model container [2024-10-12 00:08:16,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:16" (3/3) ... [2024-10-12 00:08:16,845 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-10-12 00:08:16,861 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:08:16,861 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-12 00:08:16,861 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:08:16,905 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:08:16,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-10-12 00:08:16,965 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-10-12 00:08:16,966 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:08:16,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-10-12 00:08:16,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-10-12 00:08:16,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-10-12 00:08:16,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:08:16,991 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;@2526d04b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:08:16,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-12 00:08:16,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:08:16,995 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:08:16,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:08:16,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:16,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:08:16,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:17,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 481027, now seen corresponding path program 1 times [2024-10-12 00:08:17,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:17,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485072544] [2024-10-12 00:08:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:17,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485072544] [2024-10-12 00:08:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485072544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520312039] [2024-10-12 00:08:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:17,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:17,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:17,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-10-12 00:08:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:17,622 INFO L124 PetriNetUnfolderBase]: 346/618 cut-off events. [2024-10-12 00:08:17,622 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-12 00:08:17,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 618 events. 346/618 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2817 event pairs, 283 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1131. Up to 560 conditions per place. [2024-10-12 00:08:17,633 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 29 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-10-12 00:08:17,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 151 flow [2024-10-12 00:08:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-12 00:08:17,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-12 00:08:17,649 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 66 transitions. [2024-10-12 00:08:17,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 151 flow [2024-10-12 00:08:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:17,655 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 103 flow [2024-10-12 00:08:17,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-10-12 00:08:17,659 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-12 00:08:17,659 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 103 flow [2024-10-12 00:08:17,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-10-12 00:08:17,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:17,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:08:17,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:08:17,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:17,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:17,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1445843925, now seen corresponding path program 1 times [2024-10-12 00:08:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448780346] [2024-10-12 00:08:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448780346] [2024-10-12 00:08:17,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448780346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894027921] [2024-10-12 00:08:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:17,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:17,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:17,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:17,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:08:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:17,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894027921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:17,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:08:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652746261] [2024-10-12 00:08:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:17,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:08:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:08:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:08:17,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:17,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-10-12 00:08:17,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:17,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:17,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:18,128 INFO L124 PetriNetUnfolderBase]: 346/617 cut-off events. [2024-10-12 00:08:18,128 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-12 00:08:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 617 events. 346/617 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2817 event pairs, 283 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1185. Up to 555 conditions per place. [2024-10-12 00:08:18,134 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-10-12 00:08:18,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 163 flow [2024-10-12 00:08:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:08:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:08:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-10-12 00:08:18,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-10-12 00:08:18,138 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 103 flow. Second operand 6 states and 75 transitions. [2024-10-12 00:08:18,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 163 flow [2024-10-12 00:08:18,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:18,139 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 110 flow [2024-10-12 00:08:18,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-10-12 00:08:18,140 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-10-12 00:08:18,142 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 110 flow [2024-10-12 00:08:18,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-10-12 00:08:18,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:18,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:18,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:08:18,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:18,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:18,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1949535806, now seen corresponding path program 1 times [2024-10-12 00:08:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:18,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786193362] [2024-10-12 00:08:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:18,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:18,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786193362] [2024-10-12 00:08:18,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786193362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:18,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:18,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:08:18,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789556560] [2024-10-12 00:08:18,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:18,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:18,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:18,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:08:18,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:18,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-10-12 00:08:18,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:18,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:18,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:18,499 INFO L124 PetriNetUnfolderBase]: 433/786 cut-off events. [2024-10-12 00:08:18,500 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-12 00:08:18,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 786 events. 433/786 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3721 event pairs, 202 based on Foata normal form. 22/542 useless extension candidates. Maximal degree in co-relation 1517. Up to 465 conditions per place. [2024-10-12 00:08:18,504 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 42 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2024-10-12 00:08:18,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 237 flow [2024-10-12 00:08:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-10-12 00:08:18,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-10-12 00:08:18,506 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 110 flow. Second operand 3 states and 75 transitions. [2024-10-12 00:08:18,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 237 flow [2024-10-12 00:08:18,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 215 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-12 00:08:18,508 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 113 flow [2024-10-12 00:08:18,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-10-12 00:08:18,508 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-10-12 00:08:18,509 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 113 flow [2024-10-12 00:08:18,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-10-12 00:08:18,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:18,509 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:08:18,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:08:18,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1871489189, now seen corresponding path program 1 times [2024-10-12 00:08:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418573911] [2024-10-12 00:08:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:18,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:18,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418573911] [2024-10-12 00:08:18,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418573911] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:18,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556559605] [2024-10-12 00:08:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:18,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:18,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:08:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:18,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:18,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:18,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556559605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:18,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:08:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219119054] [2024-10-12 00:08:18,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:18,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:08:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:08:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:08:18,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 113 flow. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:18,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:18,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:18,869 INFO L124 PetriNetUnfolderBase]: 436/795 cut-off events. [2024-10-12 00:08:18,869 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-10-12 00:08:18,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 795 events. 436/795 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3817 event pairs, 364 based on Foata normal form. 3/589 useless extension candidates. Maximal degree in co-relation 1665. Up to 732 conditions per place. [2024-10-12 00:08:18,874 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 30 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-10-12 00:08:18,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 229 flow [2024-10-12 00:08:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-10-12 00:08:18,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2714285714285714 [2024-10-12 00:08:18,876 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 113 flow. Second operand 10 states and 114 transitions. [2024-10-12 00:08:18,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 229 flow [2024-10-12 00:08:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:18,878 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 184 flow [2024-10-12 00:08:18,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=110, 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=10, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-10-12 00:08:18,879 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-12 00:08:18,881 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 184 flow [2024-10-12 00:08:18,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:18,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:18,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:18,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:08:19,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:19,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:19,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 132769765, now seen corresponding path program 1 times [2024-10-12 00:08:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185462363] [2024-10-12 00:08:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185462363] [2024-10-12 00:08:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185462363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670381754] [2024-10-12 00:08:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:19,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:08:19,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:19,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-12 00:08:19,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:19,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:19,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:19,247 INFO L124 PetriNetUnfolderBase]: 352/656 cut-off events. [2024-10-12 00:08:19,247 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-10-12 00:08:19,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 656 events. 352/656 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2953 event pairs, 116 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 1384. Up to 445 conditions per place. [2024-10-12 00:08:19,251 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 47 selfloop transitions, 1 changer transitions 2/56 dead transitions. [2024-10-12 00:08:19,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 301 flow [2024-10-12 00:08:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-12 00:08:19,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-12 00:08:19,253 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 184 flow. Second operand 3 states and 65 transitions. [2024-10-12 00:08:19,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 301 flow [2024-10-12 00:08:19,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 290 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:19,255 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 176 flow [2024-10-12 00:08:19,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-10-12 00:08:19,256 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-10-12 00:08:19,256 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 176 flow [2024-10-12 00:08:19,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-12 00:08:19,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:19,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:19,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:08:19,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:19,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash 132769800, now seen corresponding path program 1 times [2024-10-12 00:08:19,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:19,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820478909] [2024-10-12 00:08:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820478909] [2024-10-12 00:08:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820478909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:19,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:19,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:08:19,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136048570] [2024-10-12 00:08:19,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:19,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:19,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:19,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-12 00:08:19,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:19,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:19,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:19,435 INFO L124 PetriNetUnfolderBase]: 419/787 cut-off events. [2024-10-12 00:08:19,435 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-10-12 00:08:19,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 787 events. 419/787 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3596 event pairs, 352 based on Foata normal form. 11/689 useless extension candidates. Maximal degree in co-relation 1696. Up to 592 conditions per place. [2024-10-12 00:08:19,439 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 38 selfloop transitions, 2 changer transitions 14/60 dead transitions. [2024-10-12 00:08:19,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 314 flow [2024-10-12 00:08:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-10-12 00:08:19,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-10-12 00:08:19,440 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 176 flow. Second operand 4 states and 79 transitions. [2024-10-12 00:08:19,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 314 flow [2024-10-12 00:08:19,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:08:19,442 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 179 flow [2024-10-12 00:08:19,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-10-12 00:08:19,443 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-10-12 00:08:19,443 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 179 flow [2024-10-12 00:08:19,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-12 00:08:19,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:19,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:19,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:08:19,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:19,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -478758154, now seen corresponding path program 1 times [2024-10-12 00:08:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:19,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078962489] [2024-10-12 00:08:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:19,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078962489] [2024-10-12 00:08:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078962489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667786755] [2024-10-12 00:08:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:19,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:19,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:19,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:08:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:19,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:19,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:19,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:19,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667786755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:19,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:19,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-12 00:08:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30400630] [2024-10-12 00:08:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:19,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:08:19,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:19,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 00:08:19,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:19,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:19,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:19,765 INFO L124 PetriNetUnfolderBase]: 250/495 cut-off events. [2024-10-12 00:08:19,766 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-10-12 00:08:19,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 495 events. 250/495 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2102 event pairs, 154 based on Foata normal form. 56/477 useless extension candidates. Maximal degree in co-relation 1081. Up to 355 conditions per place. [2024-10-12 00:08:19,769 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 7 changer transitions 6/52 dead transitions. [2024-10-12 00:08:19,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 288 flow [2024-10-12 00:08:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-10-12 00:08:19,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-12 00:08:19,771 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 179 flow. Second operand 4 states and 72 transitions. [2024-10-12 00:08:19,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 288 flow [2024-10-12 00:08:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:19,775 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 172 flow [2024-10-12 00:08:19,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-12 00:08:19,776 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-10-12 00:08:19,776 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 172 flow [2024-10-12 00:08:19,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 00:08:19,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:19,777 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:08:19,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:08:19,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:19,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:19,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1174887863, now seen corresponding path program 2 times [2024-10-12 00:08:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:19,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303855204] [2024-10-12 00:08:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:20,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:20,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303855204] [2024-10-12 00:08:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303855204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:20,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203631032] [2024-10-12 00:08:20,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:20,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:20,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:20,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:08:20,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:20,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:20,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:20,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:20,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203631032] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:20,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:20,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:08:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298251200] [2024-10-12 00:08:20,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:20,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:08:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:08:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:08:20,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:20,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 172 flow. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:20,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:20,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:20,461 INFO L124 PetriNetUnfolderBase]: 160/312 cut-off events. [2024-10-12 00:08:20,461 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-10-12 00:08:20,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 312 events. 160/312 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1137 event pairs, 115 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 740. Up to 263 conditions per place. [2024-10-12 00:08:20,463 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 19 selfloop transitions, 18 changer transitions 0/42 dead transitions. [2024-10-12 00:08:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 42 transitions, 252 flow [2024-10-12 00:08:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:08:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:08:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-10-12 00:08:20,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22789115646258504 [2024-10-12 00:08:20,465 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 172 flow. Second operand 14 states and 134 transitions. [2024-10-12 00:08:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 42 transitions, 252 flow [2024-10-12 00:08:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 226 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-12 00:08:20,467 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 188 flow [2024-10-12 00:08:20,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=188, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-10-12 00:08:20,467 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-10-12 00:08:20,467 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 188 flow [2024-10-12 00:08:20,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:20,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:20,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:20,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:08:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-12 00:08:20,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1482390952, now seen corresponding path program 1 times [2024-10-12 00:08:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739336258] [2024-10-12 00:08:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:20,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739336258] [2024-10-12 00:08:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739336258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:20,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:20,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:08:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284184873] [2024-10-12 00:08:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:20,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:20,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:08:20,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:20,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-12 00:08:20,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:20,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:20,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:20,786 INFO L124 PetriNetUnfolderBase]: 208/384 cut-off events. [2024-10-12 00:08:20,786 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-12 00:08:20,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 384 events. 208/384 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 76 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 810. Up to 271 conditions per place. [2024-10-12 00:08:20,789 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 44 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2024-10-12 00:08:20,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 306 flow [2024-10-12 00:08:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-10-12 00:08:20,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-12 00:08:20,790 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 188 flow. Second operand 3 states and 56 transitions. [2024-10-12 00:08:20,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 306 flow [2024-10-12 00:08:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 238 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:20,794 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 128 flow [2024-10-12 00:08:20,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-10-12 00:08:20,794 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-10-12 00:08:20,795 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 128 flow [2024-10-12 00:08:20,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-12 00:08:20,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:20,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:20,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:08:20,796 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:20,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:20,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1482392006, now seen corresponding path program 1 times [2024-10-12 00:08:20,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:20,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383470679] [2024-10-12 00:08:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:20,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:21,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:21,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383470679] [2024-10-12 00:08:21,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383470679] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:21,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134287023] [2024-10-12 00:08:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:21,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:21,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:21,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:21,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:08:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:21,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 00:08:21,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:21,412 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 [2024-10-12 00:08:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:21,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:22,016 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 [2024-10-12 00:08:22,022 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 [2024-10-12 00:08:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134287023] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:22,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-10-12 00:08:22,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823979742] [2024-10-12 00:08:22,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:22,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 00:08:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:22,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 00:08:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-12 00:08:22,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:22,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 128 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:22,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:22,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:22,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:23,095 INFO L124 PetriNetUnfolderBase]: 618/1178 cut-off events. [2024-10-12 00:08:23,095 INFO L125 PetriNetUnfolderBase]: For 204/216 co-relation queries the response was YES. [2024-10-12 00:08:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 1178 events. 618/1178 cut-off events. For 204/216 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5935 event pairs, 187 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 1258. Up to 293 conditions per place. [2024-10-12 00:08:23,134 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 89 selfloop transitions, 30 changer transitions 4/129 dead transitions. [2024-10-12 00:08:23,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 624 flow [2024-10-12 00:08:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 00:08:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-12 00:08:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 231 transitions. [2024-10-12 00:08:23,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-10-12 00:08:23,137 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 128 flow. Second operand 16 states and 231 transitions. [2024-10-12 00:08:23,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 624 flow [2024-10-12 00:08:23,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 129 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:23,140 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 322 flow [2024-10-12 00:08:23,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=322, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-12 00:08:23,141 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-10-12 00:08:23,141 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 322 flow [2024-10-12 00:08:23,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:23,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:23,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:23,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:08:23,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 00:08:23,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:23,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1482392005, now seen corresponding path program 1 times [2024-10-12 00:08:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319607225] [2024-10-12 00:08:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319607225] [2024-10-12 00:08:23,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319607225] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794390470] [2024-10-12 00:08:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:23,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:23,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:23,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:08:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:23,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:23,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:23,814 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 [2024-10-12 00:08:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:24,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:24,355 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 [2024-10-12 00:08:24,358 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 [2024-10-12 00:08:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:24,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794390470] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:24,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:24,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-10-12 00:08:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391313915] [2024-10-12 00:08:24,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:24,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 00:08:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 00:08:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-12 00:08:24,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:24,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 322 flow. Second operand has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:24,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:24,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:25,156 INFO L124 PetriNetUnfolderBase]: 538/1040 cut-off events. [2024-10-12 00:08:25,156 INFO L125 PetriNetUnfolderBase]: For 1496/1508 co-relation queries the response was YES. [2024-10-12 00:08:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 1040 events. 538/1040 cut-off events. For 1496/1508 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5161 event pairs, 199 based on Foata normal form. 60/1095 useless extension candidates. Maximal degree in co-relation 2335. Up to 293 conditions per place. [2024-10-12 00:08:25,164 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 67 selfloop transitions, 28 changer transitions 4/105 dead transitions. [2024-10-12 00:08:25,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 660 flow [2024-10-12 00:08:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 00:08:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-12 00:08:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-10-12 00:08:25,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3241758241758242 [2024-10-12 00:08:25,166 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 322 flow. Second operand 13 states and 177 transitions. [2024-10-12 00:08:25,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 660 flow [2024-10-12 00:08:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 610 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-12 00:08:25,171 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 322 flow [2024-10-12 00:08:25,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=322, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-10-12 00:08:25,172 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-10-12 00:08:25,172 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 322 flow [2024-10-12 00:08:25,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.333333333333334) internal successors, (168), 18 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:25,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:25,172 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:25,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:08:25,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 00:08:25,377 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:25,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 613131514, now seen corresponding path program 2 times [2024-10-12 00:08:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263450591] [2024-10-12 00:08:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263450591] [2024-10-12 00:08:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263450591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985396052] [2024-10-12 00:08:26,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:26,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:26,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:26,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:08:26,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:26,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:26,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:26,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:26,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:26,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985396052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:26,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:26,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-10-12 00:08:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496328383] [2024-10-12 00:08:26,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:26,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:08:26,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:26,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 322 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) [2024-10-12 00:08:26,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:26,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:26,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:26,372 INFO L124 PetriNetUnfolderBase]: 588/1122 cut-off events. [2024-10-12 00:08:26,372 INFO L125 PetriNetUnfolderBase]: For 1898/1906 co-relation queries the response was YES. [2024-10-12 00:08:26,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3195 conditions, 1122 events. 588/1122 cut-off events. For 1898/1906 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5689 event pairs, 173 based on Foata normal form. 16/1137 useless extension candidates. Maximal degree in co-relation 2637. Up to 439 conditions per place. [2024-10-12 00:08:26,380 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 60 selfloop transitions, 6 changer transitions 2/74 dead transitions. [2024-10-12 00:08:26,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 519 flow [2024-10-12 00:08:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-12 00:08:26,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-12 00:08:26,381 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 322 flow. Second operand 4 states and 76 transitions. [2024-10-12 00:08:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 519 flow [2024-10-12 00:08:26,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 476 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:26,387 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 306 flow [2024-10-12 00:08:26,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-10-12 00:08:26,388 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-10-12 00:08:26,388 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 306 flow [2024-10-12 00:08:26,388 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) [2024-10-12 00:08:26,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:26,388 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:26,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:26,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:26,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:26,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash 613131515, now seen corresponding path program 2 times [2024-10-12 00:08:26,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:26,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517883763] [2024-10-12 00:08:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:27,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517883763] [2024-10-12 00:08:27,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517883763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783898676] [2024-10-12 00:08:27,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:27,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:27,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:08:27,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:27,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:27,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:27,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:27,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783898676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:27,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:27,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-10-12 00:08:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579120631] [2024-10-12 00:08:27,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:27,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:08:27,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:27,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 306 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) [2024-10-12 00:08:27,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:27,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:27,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:27,525 INFO L124 PetriNetUnfolderBase]: 570/1092 cut-off events. [2024-10-12 00:08:27,525 INFO L125 PetriNetUnfolderBase]: For 1464/1472 co-relation queries the response was YES. [2024-10-12 00:08:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 1092 events. 570/1092 cut-off events. For 1464/1472 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5490 event pairs, 163 based on Foata normal form. 16/1106 useless extension candidates. Maximal degree in co-relation 2156. Up to 439 conditions per place. [2024-10-12 00:08:27,532 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 59 selfloop transitions, 6 changer transitions 2/73 dead transitions. [2024-10-12 00:08:27,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 73 transitions, 488 flow [2024-10-12 00:08:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-12 00:08:27,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-10-12 00:08:27,533 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 306 flow. Second operand 4 states and 75 transitions. [2024-10-12 00:08:27,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 73 transitions, 488 flow [2024-10-12 00:08:27,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:27,537 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 318 flow [2024-10-12 00:08:27,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-12 00:08:27,538 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-10-12 00:08:27,538 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 318 flow [2024-10-12 00:08:27,538 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) [2024-10-12 00:08:27,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:27,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:27,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:08:27,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:08:27,740 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:27,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1559073026, now seen corresponding path program 1 times [2024-10-12 00:08:27,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:27,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121605934] [2024-10-12 00:08:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:08:27,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121605934] [2024-10-12 00:08:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121605934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:27,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:27,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:27,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753914320] [2024-10-12 00:08:27,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:27,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:27,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-12 00:08:27,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-12 00:08:27,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:27,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-12 00:08:27,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:27,945 INFO L124 PetriNetUnfolderBase]: 962/1836 cut-off events. [2024-10-12 00:08:27,946 INFO L125 PetriNetUnfolderBase]: For 3418/3426 co-relation queries the response was YES. [2024-10-12 00:08:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5385 conditions, 1836 events. 962/1836 cut-off events. For 3418/3426 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9957 event pairs, 285 based on Foata normal form. 52/1886 useless extension candidates. Maximal degree in co-relation 3422. Up to 690 conditions per place. [2024-10-12 00:08:27,957 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 65 selfloop transitions, 17 changer transitions 2/90 dead transitions. [2024-10-12 00:08:27,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 680 flow [2024-10-12 00:08:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-12 00:08:27,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-12 00:08:27,958 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 318 flow. Second operand 4 states and 80 transitions. [2024-10-12 00:08:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 680 flow [2024-10-12 00:08:27,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:27,963 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 517 flow [2024-10-12 00:08:27,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-10-12 00:08:27,964 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-10-12 00:08:27,965 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 517 flow [2024-10-12 00:08:27,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-12 00:08:27,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:27,965 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:27,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:08:27,966 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:27,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1211110993, now seen corresponding path program 1 times [2024-10-12 00:08:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:27,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326849523] [2024-10-12 00:08:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:28,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326849523] [2024-10-12 00:08:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326849523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:28,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:08:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985473173] [2024-10-12 00:08:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:28,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:28,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-10-12 00:08:28,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 00:08:28,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:28,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-10-12 00:08:28,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:28,314 INFO L124 PetriNetUnfolderBase]: 1806/3100 cut-off events. [2024-10-12 00:08:28,314 INFO L125 PetriNetUnfolderBase]: For 7260/7260 co-relation queries the response was YES. [2024-10-12 00:08:28,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9995 conditions, 3100 events. 1806/3100 cut-off events. For 7260/7260 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 16165 event pairs, 304 based on Foata normal form. 160/3258 useless extension candidates. Maximal degree in co-relation 6146. Up to 1526 conditions per place. [2024-10-12 00:08:28,331 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 93 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-10-12 00:08:28,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 922 flow [2024-10-12 00:08:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-12 00:08:28,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-10-12 00:08:28,333 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 517 flow. Second operand 4 states and 63 transitions. [2024-10-12 00:08:28,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 922 flow [2024-10-12 00:08:28,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 922 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:08:28,338 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 519 flow [2024-10-12 00:08:28,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=519, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-10-12 00:08:28,339 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-10-12 00:08:28,339 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 519 flow [2024-10-12 00:08:28,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-12 00:08:28,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:28,339 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:28,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 00:08:28,340 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:28,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 435671192, now seen corresponding path program 1 times [2024-10-12 00:08:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67662079] [2024-10-12 00:08:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67662079] [2024-10-12 00:08:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67662079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328835206] [2024-10-12 00:08:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:29,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:29,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:29,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:08:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:29,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:08:29,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:29,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:29,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:29,402 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 28 treesize of output 20 [2024-10-12 00:08:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328835206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:29,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:29,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-10-12 00:08:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118317833] [2024-10-12 00:08:29,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:29,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 00:08:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 00:08:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-10-12 00:08:29,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:29,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 519 flow. Second operand has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-10-12 00:08:29,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:29,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:29,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:31,434 INFO L124 PetriNetUnfolderBase]: 1971/3735 cut-off events. [2024-10-12 00:08:31,435 INFO L125 PetriNetUnfolderBase]: For 13652/13668 co-relation queries the response was YES. [2024-10-12 00:08:31,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12662 conditions, 3735 events. 1971/3735 cut-off events. For 13652/13668 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22448 event pairs, 185 based on Foata normal form. 186/3919 useless extension candidates. Maximal degree in co-relation 7136. Up to 695 conditions per place. [2024-10-12 00:08:31,468 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 126 selfloop transitions, 71 changer transitions 6/210 dead transitions. [2024-10-12 00:08:31,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 210 transitions, 1705 flow [2024-10-12 00:08:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:08:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:08:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 349 transitions. [2024-10-12 00:08:31,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3462301587301587 [2024-10-12 00:08:31,470 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 519 flow. Second operand 24 states and 349 transitions. [2024-10-12 00:08:31,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 210 transitions, 1705 flow [2024-10-12 00:08:31,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 210 transitions, 1693 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:31,480 INFO L231 Difference]: Finished difference. Result has 104 places, 104 transitions, 1198 flow [2024-10-12 00:08:31,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1198, PETRI_PLACES=104, PETRI_TRANSITIONS=104} [2024-10-12 00:08:31,481 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2024-10-12 00:08:31,481 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 1198 flow [2024-10-12 00:08:31,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-10-12 00:08:31,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:31,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:31,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:31,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:31,686 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:31,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2066868386, now seen corresponding path program 2 times [2024-10-12 00:08:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765535740] [2024-10-12 00:08:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:32,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765535740] [2024-10-12 00:08:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765535740] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649548847] [2024-10-12 00:08:32,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:32,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:32,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:32,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:32,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:08:32,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:32,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:32,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:32,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:32,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:32,463 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-12 00:08:32,463 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 [2024-10-12 00:08:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649548847] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:32,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2024-10-12 00:08:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828378910] [2024-10-12 00:08:32,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:32,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-12 00:08:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-12 00:08:32,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-10-12 00:08:32,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:32,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 1198 flow. Second operand has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 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) [2024-10-12 00:08:32,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:32,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:32,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:34,577 INFO L124 PetriNetUnfolderBase]: 2645/4967 cut-off events. [2024-10-12 00:08:34,578 INFO L125 PetriNetUnfolderBase]: For 40152/40152 co-relation queries the response was YES. [2024-10-12 00:08:34,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19803 conditions, 4967 events. 2645/4967 cut-off events. For 40152/40152 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30246 event pairs, 350 based on Foata normal form. 152/5110 useless extension candidates. Maximal degree in co-relation 15534. Up to 947 conditions per place. [2024-10-12 00:08:34,611 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 199 selfloop transitions, 103 changer transitions 14/323 dead transitions. [2024-10-12 00:08:34,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 323 transitions, 3202 flow [2024-10-12 00:08:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-12 00:08:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-12 00:08:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 539 transitions. [2024-10-12 00:08:34,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33771929824561403 [2024-10-12 00:08:34,615 INFO L175 Difference]: Start difference. First operand has 104 places, 104 transitions, 1198 flow. Second operand 38 states and 539 transitions. [2024-10-12 00:08:34,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 323 transitions, 3202 flow [2024-10-12 00:08:34,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 323 transitions, 2786 flow, removed 197 selfloop flow, removed 7 redundant places. [2024-10-12 00:08:34,668 INFO L231 Difference]: Finished difference. Result has 148 places, 144 transitions, 1864 flow [2024-10-12 00:08:34,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1864, PETRI_PLACES=148, PETRI_TRANSITIONS=144} [2024-10-12 00:08:34,669 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 109 predicate places. [2024-10-12 00:08:34,669 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 144 transitions, 1864 flow [2024-10-12 00:08:34,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 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) [2024-10-12 00:08:34,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:34,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:34,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:34,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:08:34,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:34,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1832711125, now seen corresponding path program 1 times [2024-10-12 00:08:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785858149] [2024-10-12 00:08:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785858149] [2024-10-12 00:08:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785858149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984865792] [2024-10-12 00:08:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:35,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:35,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:35,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:35,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:08:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:35,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:08:35,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:36,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:36,161 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-10-12 00:08:36,161 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 46 [2024-10-12 00:08:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984865792] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:36,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-10-12 00:08:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782963619] [2024-10-12 00:08:36,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:36,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 00:08:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 00:08:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-10-12 00:08:36,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:36,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 144 transitions, 1864 flow. Second operand has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-10-12 00:08:36,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:36,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:36,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:38,943 INFO L124 PetriNetUnfolderBase]: 2887/5477 cut-off events. [2024-10-12 00:08:38,943 INFO L125 PetriNetUnfolderBase]: For 43814/43814 co-relation queries the response was YES. [2024-10-12 00:08:38,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21583 conditions, 5477 events. 2887/5477 cut-off events. For 43814/43814 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 34507 event pairs, 969 based on Foata normal form. 52/5522 useless extension candidates. Maximal degree in co-relation 18655. Up to 1516 conditions per place. [2024-10-12 00:08:38,981 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 178 selfloop transitions, 88 changer transitions 6/279 dead transitions. [2024-10-12 00:08:38,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 279 transitions, 2948 flow [2024-10-12 00:08:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-12 00:08:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-12 00:08:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 389 transitions. [2024-10-12 00:08:38,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3307823129251701 [2024-10-12 00:08:38,984 INFO L175 Difference]: Start difference. First operand has 148 places, 144 transitions, 1864 flow. Second operand 28 states and 389 transitions. [2024-10-12 00:08:38,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 279 transitions, 2948 flow [2024-10-12 00:08:39,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 279 transitions, 2597 flow, removed 128 selfloop flow, removed 16 redundant places. [2024-10-12 00:08:39,067 INFO L231 Difference]: Finished difference. Result has 168 places, 157 transitions, 1960 flow [2024-10-12 00:08:39,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1960, PETRI_PLACES=168, PETRI_TRANSITIONS=157} [2024-10-12 00:08:39,068 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2024-10-12 00:08:39,068 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 157 transitions, 1960 flow [2024-10-12 00:08:39,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-10-12 00:08:39,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:39,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:39,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:08:39,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:08:39,274 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:39,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash 561394991, now seen corresponding path program 2 times [2024-10-12 00:08:39,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:39,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607079384] [2024-10-12 00:08:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:39,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:39,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607079384] [2024-10-12 00:08:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607079384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376321938] [2024-10-12 00:08:39,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:39,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:08:40,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:40,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:40,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-12 00:08:40,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:40,108 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 [2024-10-12 00:08:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:40,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:40,783 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 58 treesize of output 52 [2024-10-12 00:08:40,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:40,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 99 [2024-10-12 00:08:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376321938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:41,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2024-10-12 00:08:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715264887] [2024-10-12 00:08:41,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:41,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 00:08:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 00:08:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-10-12 00:08:41,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:41,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 157 transitions, 1960 flow. Second operand has 30 states, 30 states have (on average 9.2) internal successors, (276), 30 states have internal predecessors, (276), 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) [2024-10-12 00:08:41,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:41,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:41,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:44,521 INFO L124 PetriNetUnfolderBase]: 4272/8138 cut-off events. [2024-10-12 00:08:44,521 INFO L125 PetriNetUnfolderBase]: For 57326/57326 co-relation queries the response was YES. [2024-10-12 00:08:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30566 conditions, 8138 events. 4272/8138 cut-off events. For 57326/57326 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 55909 event pairs, 1012 based on Foata normal form. 142/8273 useless extension candidates. Maximal degree in co-relation 29620. Up to 3083 conditions per place. [2024-10-12 00:08:44,589 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 238 selfloop transitions, 115 changer transitions 8/368 dead transitions. [2024-10-12 00:08:44,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 368 transitions, 4061 flow [2024-10-12 00:08:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 00:08:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-12 00:08:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 464 transitions. [2024-10-12 00:08:44,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3347763347763348 [2024-10-12 00:08:44,591 INFO L175 Difference]: Start difference. First operand has 168 places, 157 transitions, 1960 flow. Second operand 33 states and 464 transitions. [2024-10-12 00:08:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 368 transitions, 4061 flow [2024-10-12 00:08:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 368 transitions, 3827 flow, removed 75 selfloop flow, removed 15 redundant places. [2024-10-12 00:08:44,769 INFO L231 Difference]: Finished difference. Result has 197 places, 215 transitions, 3023 flow [2024-10-12 00:08:44,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3023, PETRI_PLACES=197, PETRI_TRANSITIONS=215} [2024-10-12 00:08:44,770 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 158 predicate places. [2024-10-12 00:08:44,770 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 215 transitions, 3023 flow [2024-10-12 00:08:44,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 30 states have internal predecessors, (276), 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) [2024-10-12 00:08:44,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:44,771 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:44,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:44,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:44,972 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:44,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2053704236, now seen corresponding path program 3 times [2024-10-12 00:08:44,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:44,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410504390] [2024-10-12 00:08:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410504390] [2024-10-12 00:08:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410504390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960784809] [2024-10-12 00:08:45,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:08:45,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:45,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:45,462 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:45,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:08:45,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 00:08:45,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:45,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:08:45,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:45,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:45,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:45,653 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 28 treesize of output 20 [2024-10-12 00:08:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:45,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960784809] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:45,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:45,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 17 [2024-10-12 00:08:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057619810] [2024-10-12 00:08:45,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:45,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:08:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:08:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:08:45,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:45,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 215 transitions, 3023 flow. Second operand has 19 states, 19 states have (on average 10.210526315789474) internal successors, (194), 19 states have internal predecessors, (194), 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) [2024-10-12 00:08:45,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:45,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:45,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:47,369 INFO L124 PetriNetUnfolderBase]: 4201/7985 cut-off events. [2024-10-12 00:08:47,369 INFO L125 PetriNetUnfolderBase]: For 64058/64058 co-relation queries the response was YES. [2024-10-12 00:08:47,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31212 conditions, 7985 events. 4201/7985 cut-off events. For 64058/64058 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 54548 event pairs, 1052 based on Foata normal form. 50/8029 useless extension candidates. Maximal degree in co-relation 30372. Up to 3656 conditions per place. [2024-10-12 00:08:47,433 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 191 selfloop transitions, 84 changer transitions 29/311 dead transitions. [2024-10-12 00:08:47,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 311 transitions, 4017 flow [2024-10-12 00:08:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 00:08:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-12 00:08:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 319 transitions. [2024-10-12 00:08:47,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3302277432712215 [2024-10-12 00:08:47,435 INFO L175 Difference]: Start difference. First operand has 197 places, 215 transitions, 3023 flow. Second operand 23 states and 319 transitions. [2024-10-12 00:08:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 311 transitions, 4017 flow [2024-10-12 00:08:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 311 transitions, 3849 flow, removed 39 selfloop flow, removed 15 redundant places. [2024-10-12 00:08:47,614 INFO L231 Difference]: Finished difference. Result has 209 places, 206 transitions, 2896 flow [2024-10-12 00:08:47,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2896, PETRI_PLACES=209, PETRI_TRANSITIONS=206} [2024-10-12 00:08:47,615 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 170 predicate places. [2024-10-12 00:08:47,615 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 206 transitions, 2896 flow [2024-10-12 00:08:47,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.210526315789474) internal successors, (194), 19 states have internal predecessors, (194), 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) [2024-10-12 00:08:47,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:47,616 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:47,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 00:08:47,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:47,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:47,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -875306405, now seen corresponding path program 3 times [2024-10-12 00:08:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823353829] [2024-10-12 00:08:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823353829] [2024-10-12 00:08:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823353829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884257609] [2024-10-12 00:08:48,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:08:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:48,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:48,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:08:48,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 00:08:48,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:48,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:08:48,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 00:08:48,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 00:08:48,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884257609] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:48,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:48,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2024-10-12 00:08:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568314387] [2024-10-12 00:08:48,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:48,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 00:08:48,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 00:08:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-10-12 00:08:48,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:48,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 206 transitions, 2896 flow. Second operand has 16 states, 16 states have (on average 9.5) internal successors, (152), 16 states have internal predecessors, (152), 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) [2024-10-12 00:08:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:48,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:49,531 INFO L124 PetriNetUnfolderBase]: 3435/6537 cut-off events. [2024-10-12 00:08:49,531 INFO L125 PetriNetUnfolderBase]: For 57238/57238 co-relation queries the response was YES. [2024-10-12 00:08:49,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26629 conditions, 6537 events. 3435/6537 cut-off events. For 57238/57238 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 40992 event pairs, 1603 based on Foata normal form. 12/6546 useless extension candidates. Maximal degree in co-relation 26059. Up to 5510 conditions per place. [2024-10-12 00:08:49,576 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 147 selfloop transitions, 15 changer transitions 31/200 dead transitions. [2024-10-12 00:08:49,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 2791 flow [2024-10-12 00:08:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:08:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:08:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-10-12 00:08:49,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-10-12 00:08:49,577 INFO L175 Difference]: Start difference. First operand has 209 places, 206 transitions, 2896 flow. Second operand 11 states and 140 transitions. [2024-10-12 00:08:49,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 2791 flow [2024-10-12 00:08:49,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 200 transitions, 2495 flow, removed 45 selfloop flow, removed 31 redundant places. [2024-10-12 00:08:49,709 INFO L231 Difference]: Finished difference. Result has 177 places, 165 transitions, 2028 flow [2024-10-12 00:08:49,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2028, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2024-10-12 00:08:49,709 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-10-12 00:08:49,710 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 2028 flow [2024-10-12 00:08:49,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5) internal successors, (152), 16 states have internal predecessors, (152), 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) [2024-10-12 00:08:49,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:49,710 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:49,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 00:08:49,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-12 00:08:49,911 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:49,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash -162122583, now seen corresponding path program 4 times [2024-10-12 00:08:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347765377] [2024-10-12 00:08:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:51,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347765377] [2024-10-12 00:08:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347765377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691139418] [2024-10-12 00:08:51,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:08:51,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:51,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:51,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:08:51,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:08:51,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:51,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:51,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:51,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:51,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:51,536 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 [2024-10-12 00:08:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:51,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691139418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:51,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:51,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 4] total 23 [2024-10-12 00:08:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070868598] [2024-10-12 00:08:51,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:51,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 00:08:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 00:08:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-10-12 00:08:51,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:51,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 2028 flow. Second operand has 25 states, 25 states have (on average 9.72) internal successors, (243), 25 states have internal predecessors, (243), 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) [2024-10-12 00:08:51,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:51,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:51,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:53,321 INFO L124 PetriNetUnfolderBase]: 4058/7716 cut-off events. [2024-10-12 00:08:53,322 INFO L125 PetriNetUnfolderBase]: For 54766/54766 co-relation queries the response was YES. [2024-10-12 00:08:53,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29595 conditions, 7716 events. 4058/7716 cut-off events. For 54766/54766 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 50127 event pairs, 1021 based on Foata normal form. 80/7796 useless extension candidates. Maximal degree in co-relation 28919. Up to 4192 conditions per place. [2024-10-12 00:08:53,495 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 219 selfloop transitions, 59 changer transitions 12/297 dead transitions. [2024-10-12 00:08:53,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 297 transitions, 3507 flow [2024-10-12 00:08:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:08:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:08:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 328 transitions. [2024-10-12 00:08:53,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3253968253968254 [2024-10-12 00:08:53,497 INFO L175 Difference]: Start difference. First operand has 177 places, 165 transitions, 2028 flow. Second operand 24 states and 328 transitions. [2024-10-12 00:08:53,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 297 transitions, 3507 flow [2024-10-12 00:08:53,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 297 transitions, 3355 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-10-12 00:08:53,604 INFO L231 Difference]: Finished difference. Result has 192 places, 190 transitions, 2488 flow [2024-10-12 00:08:53,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2488, PETRI_PLACES=192, PETRI_TRANSITIONS=190} [2024-10-12 00:08:53,605 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2024-10-12 00:08:53,605 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 190 transitions, 2488 flow [2024-10-12 00:08:53,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.72) internal successors, (243), 25 states have internal predecessors, (243), 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) [2024-10-12 00:08:53,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:53,605 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:53,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 00:08:53,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:53,806 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:53,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1425479113, now seen corresponding path program 5 times [2024-10-12 00:08:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16998336] [2024-10-12 00:08:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:08:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16998336] [2024-10-12 00:08:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16998336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933614093] [2024-10-12 00:08:53,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 00:08:53,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:53,929 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:53,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 00:08:53,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-12 00:08:53,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:53,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:53,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:08:54,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:54,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933614093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:54,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:54,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2024-10-12 00:08:54,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612803324] [2024-10-12 00:08:54,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:54,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 00:08:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 00:08:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-12 00:08:54,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:54,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 190 transitions, 2488 flow. Second operand has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 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) [2024-10-12 00:08:54,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:54,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:54,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:55,427 INFO L124 PetriNetUnfolderBase]: 3891/7443 cut-off events. [2024-10-12 00:08:55,428 INFO L125 PetriNetUnfolderBase]: For 78054/78054 co-relation queries the response was YES. [2024-10-12 00:08:55,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31074 conditions, 7443 events. 3891/7443 cut-off events. For 78054/78054 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 48353 event pairs, 643 based on Foata normal form. 204/7646 useless extension candidates. Maximal degree in co-relation 31011. Up to 2027 conditions per place. [2024-10-12 00:08:55,487 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 76 selfloop transitions, 60 changer transitions 114/257 dead transitions. [2024-10-12 00:08:55,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 257 transitions, 3010 flow [2024-10-12 00:08:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 00:08:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-12 00:08:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 313 transitions. [2024-10-12 00:08:55,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35487528344671204 [2024-10-12 00:08:55,489 INFO L175 Difference]: Start difference. First operand has 192 places, 190 transitions, 2488 flow. Second operand 21 states and 313 transitions. [2024-10-12 00:08:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 257 transitions, 3010 flow [2024-10-12 00:08:55,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 257 transitions, 2681 flow, removed 50 selfloop flow, removed 32 redundant places. [2024-10-12 00:08:55,603 INFO L231 Difference]: Finished difference. Result has 176 places, 115 transitions, 1553 flow [2024-10-12 00:08:55,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1553, PETRI_PLACES=176, PETRI_TRANSITIONS=115} [2024-10-12 00:08:55,603 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-10-12 00:08:55,603 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 115 transitions, 1553 flow [2024-10-12 00:08:55,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 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) [2024-10-12 00:08:55,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:55,604 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:55,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 00:08:55,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 00:08:55,805 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:08:55,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -609023519, now seen corresponding path program 6 times [2024-10-12 00:08:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684944803] [2024-10-12 00:08:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:57,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:57,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684944803] [2024-10-12 00:08:57,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684944803] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:57,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777064996] [2024-10-12 00:08:57,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 00:08:57,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:57,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:57,614 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:57,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 00:08:57,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-12 00:08:57,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:57,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 00:08:57,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:57,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:58,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:58,067 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 [2024-10-12 00:08:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777064996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:58,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:58,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 4] total 28 [2024-10-12 00:08:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004739256] [2024-10-12 00:08:58,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:58,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 00:08:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 00:08:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-10-12 00:08:58,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:08:58,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 115 transitions, 1553 flow. Second operand has 30 states, 30 states have (on average 9.4) internal successors, (282), 30 states have internal predecessors, (282), 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) [2024-10-12 00:08:58,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:58,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:08:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:59,959 INFO L124 PetriNetUnfolderBase]: 3292/6134 cut-off events. [2024-10-12 00:08:59,959 INFO L125 PetriNetUnfolderBase]: For 66067/66067 co-relation queries the response was YES. [2024-10-12 00:08:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27705 conditions, 6134 events. 3292/6134 cut-off events. For 66067/66067 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 37279 event pairs, 733 based on Foata normal form. 40/6174 useless extension candidates. Maximal degree in co-relation 27655. Up to 2645 conditions per place. [2024-10-12 00:09:00,003 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 137 selfloop transitions, 49 changer transitions 10/203 dead transitions. [2024-10-12 00:09:00,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 203 transitions, 2628 flow [2024-10-12 00:09:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 00:09:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-12 00:09:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 261 transitions. [2024-10-12 00:09:00,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3107142857142857 [2024-10-12 00:09:00,005 INFO L175 Difference]: Start difference. First operand has 176 places, 115 transitions, 1553 flow. Second operand 20 states and 261 transitions. [2024-10-12 00:09:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 203 transitions, 2628 flow [2024-10-12 00:09:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 203 transitions, 2320 flow, removed 131 selfloop flow, removed 17 redundant places. [2024-10-12 00:09:00,131 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 1622 flow [2024-10-12 00:09:00,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1622, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2024-10-12 00:09:00,131 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-10-12 00:09:00,131 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 1622 flow [2024-10-12 00:09:00,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.4) internal successors, (282), 30 states have internal predecessors, (282), 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) [2024-10-12 00:09:00,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:00,132 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:00,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:00,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:00,332 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:09:00,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash -234244332, now seen corresponding path program 7 times [2024-10-12 00:09:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399156926] [2024-10-12 00:09:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:00,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399156926] [2024-10-12 00:09:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399156926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043244230] [2024-10-12 00:09:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 00:09:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:00,934 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:00,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 00:09:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:01,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 00:09:01,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:01,139 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 [2024-10-12 00:09:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:01,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:02,068 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 97 treesize of output 87 [2024-10-12 00:09:02,104 INFO L349 Elim1Store]: treesize reduction 10, result has 82.5 percent of original size [2024-10-12 00:09:02,105 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 294 treesize of output 247 [2024-10-12 00:09:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043244230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:03,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:03,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-10-12 00:09:03,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018866768] [2024-10-12 00:09:03,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:03,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 00:09:03,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 00:09:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 00:09:03,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:09:03,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 120 transitions, 1622 flow. Second operand has 42 states, 42 states have (on average 9.142857142857142) internal successors, (384), 42 states have internal predecessors, (384), 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) [2024-10-12 00:09:03,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:03,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:09:03,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:12,405 INFO L124 PetriNetUnfolderBase]: 11909/21809 cut-off events. [2024-10-12 00:09:12,406 INFO L125 PetriNetUnfolderBase]: For 218481/218481 co-relation queries the response was YES. [2024-10-12 00:09:12,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94885 conditions, 21809 events. 11909/21809 cut-off events. For 218481/218481 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 163305 event pairs, 1996 based on Foata normal form. 646/22447 useless extension candidates. Maximal degree in co-relation 94843. Up to 4903 conditions per place. [2024-10-12 00:09:12,599 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 587 selfloop transitions, 337 changer transitions 12/943 dead transitions. [2024-10-12 00:09:12,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 943 transitions, 11390 flow [2024-10-12 00:09:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-10-12 00:09:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2024-10-12 00:09:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 1272 transitions. [2024-10-12 00:09:12,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3648881239242685 [2024-10-12 00:09:12,602 INFO L175 Difference]: Start difference. First operand has 139 places, 120 transitions, 1622 flow. Second operand 83 states and 1272 transitions. [2024-10-12 00:09:12,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 943 transitions, 11390 flow [2024-10-12 00:09:12,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 943 transitions, 11242 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-10-12 00:09:12,908 INFO L231 Difference]: Finished difference. Result has 254 places, 478 transitions, 8716 flow [2024-10-12 00:09:12,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=8716, PETRI_PLACES=254, PETRI_TRANSITIONS=478} [2024-10-12 00:09:12,909 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 215 predicate places. [2024-10-12 00:09:12,909 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 478 transitions, 8716 flow [2024-10-12 00:09:12,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.142857142857142) internal successors, (384), 42 states have internal predecessors, (384), 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) [2024-10-12 00:09:12,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:12,909 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:12,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 00:09:13,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-12 00:09:13,114 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-12 00:09:13,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash -501185156, now seen corresponding path program 8 times [2024-10-12 00:09:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:13,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865590874] [2024-10-12 00:09:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865590874] [2024-10-12 00:09:13,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865590874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347230733] [2024-10-12 00:09:13,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:13,658 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:13,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 00:09:13,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:09:13,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:13,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 00:09:13,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:13,817 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 [2024-10-12 00:09:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:14,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:14,635 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 [2024-10-12 00:09:14,643 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-12 00:09:14,644 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 [2024-10-12 00:09:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347230733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:14,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:14,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-10-12 00:09:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149254405] [2024-10-12 00:09:14,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:14,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 00:09:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 00:09:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 00:09:15,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-10-12 00:09:15,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 478 transitions, 8716 flow. Second operand has 42 states, 42 states have (on average 9.142857142857142) internal successors, (384), 42 states have internal predecessors, (384), 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) [2024-10-12 00:09:15,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:15,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-10-12 00:09:15,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:32,501 INFO L124 PetriNetUnfolderBase]: 23159/42301 cut-off events. [2024-10-12 00:09:32,501 INFO L125 PetriNetUnfolderBase]: For 2204163/2204163 co-relation queries the response was YES. [2024-10-12 00:09:33,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279607 conditions, 42301 events. 23159/42301 cut-off events. For 2204163/2204163 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 342336 event pairs, 2474 based on Foata normal form. 840/43135 useless extension candidates. Maximal degree in co-relation 279519. Up to 10345 conditions per place. [2024-10-12 00:09:33,519 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 756 selfloop transitions, 1212 changer transitions 39/2014 dead transitions. [2024-10-12 00:09:33,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 2014 transitions, 39249 flow [2024-10-12 00:09:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-10-12 00:09:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2024-10-12 00:09:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 1535 transitions. [2024-10-12 00:09:33,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34807256235827666 [2024-10-12 00:09:33,523 INFO L175 Difference]: Start difference. First operand has 254 places, 478 transitions, 8716 flow. Second operand 105 states and 1535 transitions. [2024-10-12 00:09:33,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 2014 transitions, 39249 flow