./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:08:44,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:08:44,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:08:44,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:08:44,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:08:44,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:08:44,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:08:44,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:08:44,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:08:44,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:08:44,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:08:44,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:08:44,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:08:44,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:08:44,335 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:08:44,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:08:44,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:08:44,336 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:08:44,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:08:44,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:08:44,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:08:44,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:08:44,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:08:44,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:08:44,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:08:44,338 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:08:44,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:08:44,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:08:44,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:08:44,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:08:44,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:08:44,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:08:44,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:08:44,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:08:44,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:08:44,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:08:44,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:08:44,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:08:44,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:08:44,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:08:44,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:08:44,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:08:44,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:08:44,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:08:44,342 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-11-19 14:08:44,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:08:44,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:08:44,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:08:44,533 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:08:44,533 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:08:44,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-19 14:08:45,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:08:45,896 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:08:45,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-19 14:08:45,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c99a4e9/8d26c3726e724a6aab021eed95d04902/FLAG10d00b2b1 [2024-11-19 14:08:45,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c99a4e9/8d26c3726e724a6aab021eed95d04902 [2024-11-19 14:08:45,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:08:45,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:08:45,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:08:45,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:08:45,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:08:45,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:08:45" (1/1) ... [2024-11-19 14:08:45,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440e5fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:45, skipping insertion in model container [2024-11-19 14:08:45,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:08:45" (1/1) ... [2024-11-19 14:08:45,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:08:46,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:08:46,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:08:46,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:08:46,128 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:08:46,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46 WrapperNode [2024-11-19 14:08:46,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:08:46,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:08:46,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:08:46,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:08:46,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,159 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 151 [2024-11-19 14:08:46,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:08:46,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:08:46,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:08:46,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:08:46,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,182 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:08:46,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:08:46,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:08:46,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:08:46,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:08:46,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (1/1) ... [2024-11-19 14:08:46,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:08:46,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:46,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:08:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:08:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:08:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:08:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:08:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:08:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:08:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:08:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:08:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:08:46,266 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:08:46,350 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:08:46,352 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:08:46,557 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:08:46,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:08:46,712 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:08:46,712 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:08:46,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:08:46 BoogieIcfgContainer [2024-11-19 14:08:46,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:08:46,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:08:46,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:08:46,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:08:46,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:08:45" (1/3) ... [2024-11-19 14:08:46,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a9ce9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:08:46, skipping insertion in model container [2024-11-19 14:08:46,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:46" (2/3) ... [2024-11-19 14:08:46,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a9ce9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:08:46, skipping insertion in model container [2024-11-19 14:08:46,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:08:46" (3/3) ... [2024-11-19 14:08:46,722 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-11-19 14:08:46,735 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:08:46,735 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 14:08:46,735 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:08:46,793 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:08:46,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-11-19 14:08:46,851 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-19 14:08:46,851 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:08:46,855 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. [2024-11-19 14:08:46,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-11-19 14:08:46,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-11-19 14:08:46,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:08:46,877 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;@508037ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:08:46,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-19 14:08:46,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:08:46,882 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:08:46,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:08:46,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:46,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:08:46,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:46,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash 481027, now seen corresponding path program 1 times [2024-11-19 14:08:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361570305] [2024-11-19 14:08:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361570305] [2024-11-19 14:08:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361570305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:08:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802412303] [2024-11-19 14:08:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:47,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:47,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:47,240 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) [2024-11-19 14:08:47,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:47,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:47,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:47,405 INFO L124 PetriNetUnfolderBase]: 346/618 cut-off events. [2024-11-19 14:08:47,405 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-19 14:08:47,409 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. [2024-11-19 14:08:47,414 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 29 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-19 14:08:47,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 151 flow [2024-11-19 14:08:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-19 14:08:47,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-19 14:08:47,425 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 66 transitions. [2024-11-19 14:08:47,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 151 flow [2024-11-19 14:08:47,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:47,429 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 103 flow [2024-11-19 14:08:47,431 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} [2024-11-19 14:08:47,435 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-19 14:08:47,435 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 103 flow [2024-11-19 14:08:47,435 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) [2024-11-19 14:08:47,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:47,436 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:08:47,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:08:47,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:47,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1445843925, now seen corresponding path program 1 times [2024-11-19 14:08:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633551383] [2024-11-19 14:08:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633551383] [2024-11-19 14:08:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633551383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461210063] [2024-11-19 14:08:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:47,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:47,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:47,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:47,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:08:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:47,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:08:47,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:47,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:08:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461210063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:47,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:08:47,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:08:47,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343997149] [2024-11-19 14:08:47,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:47,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:08:47,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:08:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:08:47,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:47,641 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) [2024-11-19 14:08:47,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:47,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:47,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:47,778 INFO L124 PetriNetUnfolderBase]: 346/617 cut-off events. [2024-11-19 14:08:47,778 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 14:08:47,780 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. [2024-11-19 14:08:47,782 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-11-19 14:08:47,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 163 flow [2024-11-19 14:08:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:08:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:08:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-11-19 14:08:47,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-11-19 14:08:47,786 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 103 flow. Second operand 6 states and 75 transitions. [2024-11-19 14:08:47,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 163 flow [2024-11-19 14:08:47,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:47,788 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 110 flow [2024-11-19 14:08:47,788 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} [2024-11-19 14:08:47,788 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-19 14:08:47,789 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 110 flow [2024-11-19 14:08:47,789 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) [2024-11-19 14:08:47,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:47,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:47,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:08:47,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:47,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:47,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1949535806, now seen corresponding path program 1 times [2024-11-19 14:08:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:47,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958976588] [2024-11-19 14:08:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958976588] [2024-11-19 14:08:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958976588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:48,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:48,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:08:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188882507] [2024-11-19 14:08:48,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:48,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:48,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:48,068 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) [2024-11-19 14:08:48,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:48,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:48,205 INFO L124 PetriNetUnfolderBase]: 433/786 cut-off events. [2024-11-19 14:08:48,205 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-19 14:08:48,207 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. [2024-11-19 14:08:48,209 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 42 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2024-11-19 14:08:48,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 237 flow [2024-11-19 14:08:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-19 14:08:48,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-19 14:08:48,212 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 110 flow. Second operand 3 states and 75 transitions. [2024-11-19 14:08:48,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 237 flow [2024-11-19 14:08:48,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 215 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 14:08:48,214 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 113 flow [2024-11-19 14:08:48,214 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} [2024-11-19 14:08:48,215 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-19 14:08:48,216 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 113 flow [2024-11-19 14:08:48,216 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) [2024-11-19 14:08:48,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:48,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:08:48,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:08:48,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:48,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1871489189, now seen corresponding path program 1 times [2024-11-19 14:08:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266402176] [2024-11-19 14:08:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:48,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266402176] [2024-11-19 14:08:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266402176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663300446] [2024-11-19 14:08:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:48,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:48,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:08:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:48,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:08:48,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663300446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:48,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:08:48,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672537282] [2024-11-19 14:08:48,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:48,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:08:48,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:08:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:08:48,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:48,398 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) [2024-11-19 14:08:48,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:48,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:48,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:48,533 INFO L124 PetriNetUnfolderBase]: 436/795 cut-off events. [2024-11-19 14:08:48,533 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-19 14:08:48,534 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. [2024-11-19 14:08:48,537 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 30 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-11-19 14:08:48,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 229 flow [2024-11-19 14:08:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:08:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:08:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-11-19 14:08:48,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2714285714285714 [2024-11-19 14:08:48,541 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 113 flow. Second operand 10 states and 114 transitions. [2024-11-19 14:08:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 229 flow [2024-11-19 14:08:48,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:48,543 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 184 flow [2024-11-19 14:08:48,543 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} [2024-11-19 14:08:48,544 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-19 14:08:48,545 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 184 flow [2024-11-19 14:08:48,545 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) [2024-11-19 14:08:48,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:48,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:48,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:08:48,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 14:08:48,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:48,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 132769765, now seen corresponding path program 1 times [2024-11-19 14:08:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884162760] [2024-11-19 14:08:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884162760] [2024-11-19 14:08:48,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884162760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:48,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:48,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:08:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419904599] [2024-11-19 14:08:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:48,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:48,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:48,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:48,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:48,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:48,816 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) [2024-11-19 14:08:48,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:48,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:48,891 INFO L124 PetriNetUnfolderBase]: 352/656 cut-off events. [2024-11-19 14:08:48,892 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-11-19 14:08:48,893 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. [2024-11-19 14:08:48,895 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 47 selfloop transitions, 1 changer transitions 2/56 dead transitions. [2024-11-19 14:08:48,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 301 flow [2024-11-19 14:08:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-19 14:08:48,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-19 14:08:48,896 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 184 flow. Second operand 3 states and 65 transitions. [2024-11-19 14:08:48,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 301 flow [2024-11-19 14:08:48,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 290 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:08:48,898 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 176 flow [2024-11-19 14:08:48,898 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} [2024-11-19 14:08:48,899 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-11-19 14:08:48,899 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 176 flow [2024-11-19 14:08:48,899 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) [2024-11-19 14:08:48,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:48,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:48,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:08:48,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:48,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash 132769800, now seen corresponding path program 1 times [2024-11-19 14:08:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827993360] [2024-11-19 14:08:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:48,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827993360] [2024-11-19 14:08:48,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827993360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:48,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:48,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:08:48,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908683598] [2024-11-19 14:08:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:48,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:48,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:48,964 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) [2024-11-19 14:08:48,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:48,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:49,055 INFO L124 PetriNetUnfolderBase]: 419/787 cut-off events. [2024-11-19 14:08:49,056 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-19 14:08:49,058 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. [2024-11-19 14:08:49,060 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 38 selfloop transitions, 2 changer transitions 14/60 dead transitions. [2024-11-19 14:08:49,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 314 flow [2024-11-19 14:08:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-19 14:08:49,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-11-19 14:08:49,061 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 176 flow. Second operand 4 states and 79 transitions. [2024-11-19 14:08:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 314 flow [2024-11-19 14:08:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:08:49,065 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 179 flow [2024-11-19 14:08:49,065 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} [2024-11-19 14:08:49,066 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-11-19 14:08:49,067 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 179 flow [2024-11-19 14:08:49,067 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) [2024-11-19 14:08:49,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:49,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:49,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:08:49,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:49,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -478758154, now seen corresponding path program 1 times [2024-11-19 14:08:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:49,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744311990] [2024-11-19 14:08:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:49,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744311990] [2024-11-19 14:08:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744311990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449695145] [2024-11-19 14:08:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:49,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:49,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:49,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:49,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:08:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:49,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:08:49,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:08:49,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:08:49,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449695145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:49,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:08:49,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-19 14:08:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756727869] [2024-11-19 14:08:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:49,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:08:49,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:49,291 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) [2024-11-19 14:08:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:49,377 INFO L124 PetriNetUnfolderBase]: 250/495 cut-off events. [2024-11-19 14:08:49,377 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-19 14:08:49,379 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. [2024-11-19 14:08:49,380 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 7 changer transitions 6/52 dead transitions. [2024-11-19 14:08:49,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 288 flow [2024-11-19 14:08:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-19 14:08:49,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-19 14:08:49,382 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 179 flow. Second operand 4 states and 72 transitions. [2024-11-19 14:08:49,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 288 flow [2024-11-19 14:08:49,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:49,384 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 172 flow [2024-11-19 14:08:49,385 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} [2024-11-19 14:08:49,385 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-11-19 14:08:49,386 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 172 flow [2024-11-19 14:08:49,386 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) [2024-11-19 14:08:49,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:49,387 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:08:49,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:08:49,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:49,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:49,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1174887863, now seen corresponding path program 2 times [2024-11-19 14:08:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479606889] [2024-11-19 14:08:49,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:49,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:08:49,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479606889] [2024-11-19 14:08:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479606889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706475373] [2024-11-19 14:08:49,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:49,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:49,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:08:49,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:08:49,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:49,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:08:49,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:49,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706475373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:49,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:08:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906906186] [2024-11-19 14:08:49,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:49,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:49,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:49,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-19 14:08:49,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:49,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:49,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:49,778 INFO L124 PetriNetUnfolderBase]: 159/308 cut-off events. [2024-11-19 14:08:49,779 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-19 14:08:49,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 308 events. 159/308 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1097 event pairs, 115 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 740. Up to 262 conditions per place. [2024-11-19 14:08:49,781 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 19 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2024-11-19 14:08:49,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 230 flow [2024-11-19 14:08:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-11-19 14:08:49,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-11-19 14:08:49,782 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 172 flow. Second operand 4 states and 49 transitions. [2024-11-19 14:08:49,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 230 flow [2024-11-19 14:08:49,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 206 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:08:49,784 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 168 flow [2024-11-19 14:08:49,784 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=4, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-19 14:08:49,786 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-19 14:08:49,787 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 168 flow [2024-11-19 14:08:49,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-19 14:08:49,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:49,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:49,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:08:49,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:49,992 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:49,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1482390952, now seen corresponding path program 1 times [2024-11-19 14:08:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83346560] [2024-11-19 14:08:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:08:50,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:50,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83346560] [2024-11-19 14:08:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83346560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:50,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:08:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616620448] [2024-11-19 14:08:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:50,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:50,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:50,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 168 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) [2024-11-19 14:08:50,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:50,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:50,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:50,093 INFO L124 PetriNetUnfolderBase]: 207/380 cut-off events. [2024-11-19 14:08:50,093 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-19 14:08:50,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 380 events. 207/380 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1401 event pairs, 76 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 810. Up to 268 conditions per place. [2024-11-19 14:08:50,094 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 41 selfloop transitions, 2 changer transitions 2/48 dead transitions. [2024-11-19 14:08:50,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 280 flow [2024-11-19 14:08:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-19 14:08:50,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-19 14:08:50,095 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 168 flow. Second operand 3 states and 56 transitions. [2024-11-19 14:08:50,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 280 flow [2024-11-19 14:08:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 250 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:50,096 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 146 flow [2024-11-19 14:08:50,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-19 14:08:50,097 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-19 14:08:50,097 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 146 flow [2024-11-19 14:08:50,097 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) [2024-11-19 14:08:50,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:50,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:50,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:08:50,097 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:50,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1482392006, now seen corresponding path program 1 times [2024-11-19 14:08:50,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:50,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057117465] [2024-11-19 14:08:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057117465] [2024-11-19 14:08:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057117465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807804217] [2024-11-19 14:08:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:50,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:50,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:50,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:08:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:50,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 14:08:50,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:50,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:08:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:50,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:51,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-19 14:08:51,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-19 14:08:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807804217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:51,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-19 14:08:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246891599] [2024-11-19 14:08:51,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:51,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:08:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:08:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:08:51,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:51,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 146 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) [2024-11-19 14:08:51,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:51,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:52,154 INFO L124 PetriNetUnfolderBase]: 617/1174 cut-off events. [2024-11-19 14:08:52,154 INFO L125 PetriNetUnfolderBase]: For 211/223 co-relation queries the response was YES. [2024-11-19 14:08:52,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1174 events. 617/1174 cut-off events. For 211/223 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5884 event pairs, 187 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 1440. Up to 291 conditions per place. [2024-11-19 14:08:52,159 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 88 selfloop transitions, 28 changer transitions 4/126 dead transitions. [2024-11-19 14:08:52,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 126 transitions, 636 flow [2024-11-19 14:08:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 14:08:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 14:08:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 231 transitions. [2024-11-19 14:08:52,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-11-19 14:08:52,160 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 146 flow. Second operand 16 states and 231 transitions. [2024-11-19 14:08:52,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 126 transitions, 636 flow [2024-11-19 14:08:52,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 126 transitions, 632 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:52,162 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 334 flow [2024-11-19 14:08:52,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=334, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-19 14:08:52,163 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-19 14:08:52,163 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 334 flow [2024-11-19 14:08:52,163 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) [2024-11-19 14:08:52,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:52,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:52,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:08:52,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 14:08:52,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:52,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1482392005, now seen corresponding path program 1 times [2024-11-19 14:08:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923240828] [2024-11-19 14:08:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:52,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:52,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923240828] [2024-11-19 14:08:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923240828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:52,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797464523] [2024-11-19 14:08:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:52,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:52,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:08:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:52,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:08:52,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:52,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:08:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:53,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-19 14:08:53,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-19 14:08:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797464523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:53,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-19 14:08:53,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804140631] [2024-11-19 14:08:53,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:53,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:08:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:08:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:08:53,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:53,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 334 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) [2024-11-19 14:08:53,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:53,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:53,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,041 INFO L124 PetriNetUnfolderBase]: 537/1036 cut-off events. [2024-11-19 14:08:54,041 INFO L125 PetriNetUnfolderBase]: For 1499/1509 co-relation queries the response was YES. [2024-11-19 14:08:54,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 1036 events. 537/1036 cut-off events. For 1499/1509 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5121 event pairs, 199 based on Foata normal form. 60/1091 useless extension candidates. Maximal degree in co-relation 2337. Up to 291 conditions per place. [2024-11-19 14:08:54,045 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 66 selfloop transitions, 26 changer transitions 4/102 dead transitions. [2024-11-19 14:08:54,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 666 flow [2024-11-19 14:08:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:08:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:08:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-19 14:08:54,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3241758241758242 [2024-11-19 14:08:54,047 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 334 flow. Second operand 13 states and 177 transitions. [2024-11-19 14:08:54,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 666 flow [2024-11-19 14:08:54,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 627 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-19 14:08:54,051 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 341 flow [2024-11-19 14:08:54,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=341, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2024-11-19 14:08:54,052 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-11-19 14:08:54,052 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 341 flow [2024-11-19 14:08:54,053 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) [2024-11-19 14:08:54,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,053 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:08:54,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:54,254 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:54,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash 613131514, now seen corresponding path program 2 times [2024-11-19 14:08:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571678948] [2024-11-19 14:08:54,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:08:54,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:08:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571678948] [2024-11-19 14:08:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571678948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:08:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298136017] [2024-11-19 14:08:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:54,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:54,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:54,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:54,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,431 INFO L124 PetriNetUnfolderBase]: 569/1088 cut-off events. [2024-11-19 14:08:54,431 INFO L125 PetriNetUnfolderBase]: For 1895/1903 co-relation queries the response was YES. [2024-11-19 14:08:54,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 1088 events. 569/1088 cut-off events. For 1895/1903 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5451 event pairs, 163 based on Foata normal form. 28/1115 useless extension candidates. Maximal degree in co-relation 2540. Up to 439 conditions per place. [2024-11-19 14:08:54,435 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 56 selfloop transitions, 6 changer transitions 2/70 dead transitions. [2024-11-19 14:08:54,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 523 flow [2024-11-19 14:08:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-19 14:08:54,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-19 14:08:54,436 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 341 flow. Second operand 4 states and 76 transitions. [2024-11-19 14:08:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 523 flow [2024-11-19 14:08:54,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 482 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-19 14:08:54,441 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 329 flow [2024-11-19 14:08:54,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-19 14:08:54,442 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-19 14:08:54,442 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 329 flow [2024-11-19 14:08:54,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:08:54,442 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:54,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1559073025, now seen corresponding path program 1 times [2024-11-19 14:08:54,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81677226] [2024-11-19 14:08:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 14:08:54,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81677226] [2024-11-19 14:08:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81677226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:08:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508877412] [2024-11-19 14:08:54,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:54,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:54,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 329 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) [2024-11-19 14:08:54,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:54,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,611 INFO L124 PetriNetUnfolderBase]: 961/1832 cut-off events. [2024-11-19 14:08:54,612 INFO L125 PetriNetUnfolderBase]: For 3102/3110 co-relation queries the response was YES. [2024-11-19 14:08:54,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 1832 events. 961/1832 cut-off events. For 3102/3110 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9903 event pairs, 285 based on Foata normal form. 52/1883 useless extension candidates. Maximal degree in co-relation 3376. Up to 690 conditions per place. [2024-11-19 14:08:54,648 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 62 selfloop transitions, 17 changer transitions 2/87 dead transitions. [2024-11-19 14:08:54,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 679 flow [2024-11-19 14:08:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-19 14:08:54,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-19 14:08:54,650 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 329 flow. Second operand 4 states and 80 transitions. [2024-11-19 14:08:54,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 679 flow [2024-11-19 14:08:54,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 669 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:08:54,653 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 530 flow [2024-11-19 14:08:54,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=530, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-11-19 14:08:54,654 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-19 14:08:54,654 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 530 flow [2024-11-19 14:08:54,654 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) [2024-11-19 14:08:54,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,654 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:08:54,654 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:54,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 435670138, now seen corresponding path program 1 times [2024-11-19 14:08:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231318392] [2024-11-19 14:08:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:08:54,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231318392] [2024-11-19 14:08:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231318392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:08:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224186767] [2024-11-19 14:08:54,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:54,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-19 14:08:54,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 530 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) [2024-11-19 14:08:54,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-19 14:08:54,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:55,012 INFO L124 PetriNetUnfolderBase]: 1805/3096 cut-off events. [2024-11-19 14:08:55,012 INFO L125 PetriNetUnfolderBase]: For 7186/7186 co-relation queries the response was YES. [2024-11-19 14:08:55,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9875 conditions, 3096 events. 1805/3096 cut-off events. For 7186/7186 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 16140 event pairs, 304 based on Foata normal form. 160/3255 useless extension candidates. Maximal degree in co-relation 6068. Up to 1526 conditions per place. [2024-11-19 14:08:55,029 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 90 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-11-19 14:08:55,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 923 flow [2024-11-19 14:08:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-19 14:08:55,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-19 14:08:55,030 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 530 flow. Second operand 4 states and 63 transitions. [2024-11-19 14:08:55,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 923 flow [2024-11-19 14:08:55,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 923 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:08:55,039 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 532 flow [2024-11-19 14:08:55,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-19 14:08:55,040 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-11-19 14:08:55,040 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 532 flow [2024-11-19 14:08:55,040 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) [2024-11-19 14:08:55,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:55,040 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] [2024-11-19 14:08:55,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:08:55,041 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:55,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash 435671192, now seen corresponding path program 1 times [2024-11-19 14:08:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579658332] [2024-11-19 14:08:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579658332] [2024-11-19 14:08:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579658332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807375946] [2024-11-19 14:08:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:55,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:55,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:55,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:08:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:55,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 14:08:55,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:56,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:56,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:08:56,156 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 [2024-11-19 14:08:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807375946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:56,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:56,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-19 14:08:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899261940] [2024-11-19 14:08:56,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:56,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 14:08:56,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 14:08:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2024-11-19 14:08:56,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:56,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 532 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) [2024-11-19 14:08:56,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:56,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:56,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:58,002 INFO L124 PetriNetUnfolderBase]: 2028/3793 cut-off events. [2024-11-19 14:08:58,003 INFO L125 PetriNetUnfolderBase]: For 14108/14128 co-relation queries the response was YES. [2024-11-19 14:08:58,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12926 conditions, 3793 events. 2028/3793 cut-off events. For 14108/14128 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 22587 event pairs, 173 based on Foata normal form. 188/3980 useless extension candidates. Maximal degree in co-relation 7210. Up to 745 conditions per place. [2024-11-19 14:08:58,032 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 66 changer transitions 13/216 dead transitions. [2024-11-19 14:08:58,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 216 transitions, 1778 flow [2024-11-19 14:08:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 14:08:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 14:08:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 368 transitions. [2024-11-19 14:08:58,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3504761904761905 [2024-11-19 14:08:58,034 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 532 flow. Second operand 25 states and 368 transitions. [2024-11-19 14:08:58,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 216 transitions, 1778 flow [2024-11-19 14:08:58,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 216 transitions, 1766 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:58,045 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 1161 flow [2024-11-19 14:08:58,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1161, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2024-11-19 14:08:58,046 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2024-11-19 14:08:58,046 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 1161 flow [2024-11-19 14:08:58,046 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) [2024-11-19 14:08:58,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:58,047 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] [2024-11-19 14:08:58,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:08:58,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:58,248 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:58,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -875306404, now seen corresponding path program 2 times [2024-11-19 14:08:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407178533] [2024-11-19 14:08:58,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:58,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:58,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:08:58,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:08:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407178533] [2024-11-19 14:08:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407178533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497654281] [2024-11-19 14:08:58,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:58,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:58,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:58,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:58,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:08:58,410 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:08:58,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:58,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:08:58,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:08:58,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:08:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497654281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:58,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:58,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2024-11-19 14:08:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63947873] [2024-11-19 14:08:58,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:58,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:08:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:08:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:08:58,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:08:58,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 1161 flow. Second operand has 19 states, 19 states have (on average 10.0) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:58,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:58,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:08:58,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:59,139 INFO L124 PetriNetUnfolderBase]: 1634/3071 cut-off events. [2024-11-19 14:08:59,139 INFO L125 PetriNetUnfolderBase]: For 26013/26013 co-relation queries the response was YES. [2024-11-19 14:08:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12980 conditions, 3071 events. 1634/3071 cut-off events. For 26013/26013 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17696 event pairs, 1205 based on Foata normal form. 20/3090 useless extension candidates. Maximal degree in co-relation 9612. Up to 2504 conditions per place. [2024-11-19 14:08:59,153 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 67 selfloop transitions, 10 changer transitions 30/114 dead transitions. [2024-11-19 14:08:59,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 114 transitions, 1392 flow [2024-11-19 14:08:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:08:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:08:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-19 14:08:59,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-11-19 14:08:59,155 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 1161 flow. Second operand 9 states and 117 transitions. [2024-11-19 14:08:59,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 114 transitions, 1392 flow [2024-11-19 14:08:59,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 114 transitions, 1083 flow, removed 139 selfloop flow, removed 10 redundant places. [2024-11-19 14:08:59,176 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 733 flow [2024-11-19 14:08:59,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-11-19 14:08:59,177 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2024-11-19 14:08:59,177 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 733 flow [2024-11-19 14:08:59,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.0) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:59,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:59,178 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] [2024-11-19 14:08:59,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:08:59,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:08:59,378 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:08:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1817384726, now seen corresponding path program 3 times [2024-11-19 14:08:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367605405] [2024-11-19 14:08:59,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:08:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:59,400 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:08:59,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:08:59,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367605405] [2024-11-19 14:08:59,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367605405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432818073] [2024-11-19 14:08:59,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:08:59,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:59,498 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:59,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:08:59,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:08:59,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:59,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:08:59,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:08:59,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:59,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:08:59,619 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 [2024-11-19 14:08:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:08:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432818073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:59,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:08:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252790950] [2024-11-19 14:08:59,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:59,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:08:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:08:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:08:59,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:08:59,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 733 flow. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:59,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:59,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:08:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:00,131 INFO L124 PetriNetUnfolderBase]: 1591/2976 cut-off events. [2024-11-19 14:09:00,131 INFO L125 PetriNetUnfolderBase]: For 19421/19427 co-relation queries the response was YES. [2024-11-19 14:09:00,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 2976 events. 1591/2976 cut-off events. For 19421/19427 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16879 event pairs, 380 based on Foata normal form. 42/3014 useless extension candidates. Maximal degree in co-relation 7706. Up to 1173 conditions per place. [2024-11-19 14:09:00,147 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 103 selfloop transitions, 32 changer transitions 4/146 dead transitions. [2024-11-19 14:09:00,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 1425 flow [2024-11-19 14:09:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-11-19 14:09:00,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-11-19 14:09:00,149 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 733 flow. Second operand 10 states and 181 transitions. [2024-11-19 14:09:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 1425 flow [2024-11-19 14:09:00,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 1366 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-19 14:09:00,167 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 925 flow [2024-11-19 14:09:00,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=925, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-11-19 14:09:00,168 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2024-11-19 14:09:00,168 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 925 flow [2024-11-19 14:09:00,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:00,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:00,168 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] [2024-11-19 14:09:00,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:09:00,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:09:00,368 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:00,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1817384725, now seen corresponding path program 1 times [2024-11-19 14:09:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199806299] [2024-11-19 14:09:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199806299] [2024-11-19 14:09:01,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199806299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167200021] [2024-11-19 14:09:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:01,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:01,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:09:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:01,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 14:09:01,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:01,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:01,681 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-19 14:09:01,681 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 [2024-11-19 14:09:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167200021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:02,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2024-11-19 14:09:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993808044] [2024-11-19 14:09:02,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:02,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 14:09:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 14:09:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-11-19 14:09:02,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:02,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 925 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) [2024-11-19 14:09:02,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:02,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:02,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:03,901 INFO L124 PetriNetUnfolderBase]: 1739/3286 cut-off events. [2024-11-19 14:09:03,901 INFO L125 PetriNetUnfolderBase]: For 20581/20581 co-relation queries the response was YES. [2024-11-19 14:09:03,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11834 conditions, 3286 events. 1739/3286 cut-off events. For 20581/20581 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 19479 event pairs, 737 based on Foata normal form. 68/3353 useless extension candidates. Maximal degree in co-relation 8806. Up to 1374 conditions per place. [2024-11-19 14:09:03,914 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 165 selfloop transitions, 42 changer transitions 6/220 dead transitions. [2024-11-19 14:09:03,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 220 transitions, 1816 flow [2024-11-19 14:09:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 14:09:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-19 14:09:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 396 transitions. [2024-11-19 14:09:03,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-11-19 14:09:03,918 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 925 flow. Second operand 30 states and 396 transitions. [2024-11-19 14:09:03,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 220 transitions, 1816 flow [2024-11-19 14:09:03,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 220 transitions, 1760 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:03,943 INFO L231 Difference]: Finished difference. Result has 130 places, 99 transitions, 1084 flow [2024-11-19 14:09:03,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1084, PETRI_PLACES=130, PETRI_TRANSITIONS=99} [2024-11-19 14:09:03,944 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2024-11-19 14:09:03,945 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 99 transitions, 1084 flow [2024-11-19 14:09:03,946 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) [2024-11-19 14:09:03,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:03,946 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] [2024-11-19 14:09:03,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:09:04,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:09:04,146 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:04,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2066868386, now seen corresponding path program 4 times [2024-11-19 14:09:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777480535] [2024-11-19 14:09:04,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:04,164 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:04,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:04,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777480535] [2024-11-19 14:09:04,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777480535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667035709] [2024-11-19 14:09:04,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:04,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:04,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:04,714 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:04,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:09:04,769 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:04,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:04,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 14:09:04,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:05,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:05,083 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-19 14:09:05,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-19 14:09:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:05,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667035709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:05,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-19 14:09:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615323677] [2024-11-19 14:09:05,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:05,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 14:09:05,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 14:09:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 14:09:05,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:05,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 99 transitions, 1084 flow. Second operand has 33 states, 33 states have (on average 9.0) internal successors, (297), 33 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:05,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:05,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:07,218 INFO L124 PetriNetUnfolderBase]: 1830/3407 cut-off events. [2024-11-19 14:09:07,218 INFO L125 PetriNetUnfolderBase]: For 23762/23762 co-relation queries the response was YES. [2024-11-19 14:09:07,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12625 conditions, 3407 events. 1830/3407 cut-off events. For 23762/23762 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 19766 event pairs, 717 based on Foata normal form. 96/3503 useless extension candidates. Maximal degree in co-relation 11176. Up to 1239 conditions per place. [2024-11-19 14:09:07,234 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 54 changer transitions 4/195 dead transitions. [2024-11-19 14:09:07,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 195 transitions, 1753 flow [2024-11-19 14:09:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 14:09:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 14:09:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 320 transitions. [2024-11-19 14:09:07,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31746031746031744 [2024-11-19 14:09:07,236 INFO L175 Difference]: Start difference. First operand has 130 places, 99 transitions, 1084 flow. Second operand 24 states and 320 transitions. [2024-11-19 14:09:07,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 195 transitions, 1753 flow [2024-11-19 14:09:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 195 transitions, 1569 flow, removed 66 selfloop flow, removed 13 redundant places. [2024-11-19 14:09:07,261 INFO L231 Difference]: Finished difference. Result has 137 places, 104 transitions, 1060 flow [2024-11-19 14:09:07,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1060, PETRI_PLACES=137, PETRI_TRANSITIONS=104} [2024-11-19 14:09:07,262 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 98 predicate places. [2024-11-19 14:09:07,262 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 104 transitions, 1060 flow [2024-11-19 14:09:07,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.0) internal successors, (297), 33 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:07,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:07,262 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] [2024-11-19 14:09:07,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:09:07,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:07,467 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:07,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash 561394991, now seen corresponding path program 2 times [2024-11-19 14:09:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:07,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350326074] [2024-11-19 14:09:07,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:07,487 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:07,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350326074] [2024-11-19 14:09:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350326074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81954633] [2024-11-19 14:09:08,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:08,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:08,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:08,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:08,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:09:08,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:08,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:08,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 14:09:08,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:08,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:09:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:08,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:08,919 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 80 treesize of output 72 [2024-11-19 14:09:08,939 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-19 14:09:08,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 146 treesize of output 133 [2024-11-19 14:09:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81954633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:09,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-19 14:09:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619360787] [2024-11-19 14:09:09,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:09,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 14:09:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 14:09:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 14:09:09,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:09,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 104 transitions, 1060 flow. Second operand has 33 states, 33 states have (on average 9.0) internal successors, (297), 33 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:09,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:09,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:09,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:10,750 INFO L124 PetriNetUnfolderBase]: 2136/4021 cut-off events. [2024-11-19 14:09:10,750 INFO L125 PetriNetUnfolderBase]: For 23431/23431 co-relation queries the response was YES. [2024-11-19 14:09:10,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14603 conditions, 4021 events. 2136/4021 cut-off events. For 23431/23431 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 24016 event pairs, 611 based on Foata normal form. 38/4059 useless extension candidates. Maximal degree in co-relation 13081. Up to 1413 conditions per place. [2024-11-19 14:09:10,767 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 155 selfloop transitions, 42 changer transitions 30/234 dead transitions. [2024-11-19 14:09:10,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 234 transitions, 2063 flow [2024-11-19 14:09:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 14:09:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-19 14:09:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 391 transitions. [2024-11-19 14:09:10,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3103174603174603 [2024-11-19 14:09:10,769 INFO L175 Difference]: Start difference. First operand has 137 places, 104 transitions, 1060 flow. Second operand 30 states and 391 transitions. [2024-11-19 14:09:10,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 234 transitions, 2063 flow [2024-11-19 14:09:10,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 234 transitions, 1923 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-11-19 14:09:10,810 INFO L231 Difference]: Finished difference. Result has 154 places, 114 transitions, 1139 flow [2024-11-19 14:09:10,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1139, PETRI_PLACES=154, PETRI_TRANSITIONS=114} [2024-11-19 14:09:10,811 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2024-11-19 14:09:10,811 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 114 transitions, 1139 flow [2024-11-19 14:09:10,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.0) internal successors, (297), 33 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:10,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:10,811 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] [2024-11-19 14:09:10,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:09:11,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:11,012 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:11,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 60174387, now seen corresponding path program 3 times [2024-11-19 14:09:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:11,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997351322] [2024-11-19 14:09:11,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:11,026 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:09:11,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:11,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:11,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997351322] [2024-11-19 14:09:11,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997351322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:11,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454820264] [2024-11-19 14:09:11,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:11,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:11,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:11,152 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:11,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:09:11,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:09:11,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:11,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 14:09:11,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:11,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:11,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:11,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-19 14:09:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454820264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:11,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:11,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-19 14:09:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918315801] [2024-11-19 14:09:11,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:11,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 14:09:11,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 14:09:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-19 14:09:11,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:09:11,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 114 transitions, 1139 flow. Second operand has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:11,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:11,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:09:11,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:12,214 INFO L124 PetriNetUnfolderBase]: 2638/5001 cut-off events. [2024-11-19 14:09:12,214 INFO L125 PetriNetUnfolderBase]: For 30767/30767 co-relation queries the response was YES. [2024-11-19 14:09:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18615 conditions, 5001 events. 2638/5001 cut-off events. For 30767/30767 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 30284 event pairs, 576 based on Foata normal form. 60/5061 useless extension candidates. Maximal degree in co-relation 16731. Up to 2404 conditions per place. [2024-11-19 14:09:12,233 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 150 selfloop transitions, 47 changer transitions 8/212 dead transitions. [2024-11-19 14:09:12,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 212 transitions, 2299 flow [2024-11-19 14:09:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 14:09:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 14:09:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-11-19 14:09:12,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-11-19 14:09:12,235 INFO L175 Difference]: Start difference. First operand has 154 places, 114 transitions, 1139 flow. Second operand 12 states and 217 transitions. [2024-11-19 14:09:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 212 transitions, 2299 flow [2024-11-19 14:09:12,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 212 transitions, 2187 flow, removed 12 selfloop flow, removed 18 redundant places. [2024-11-19 14:09:12,286 INFO L231 Difference]: Finished difference. Result has 150 places, 140 transitions, 1573 flow [2024-11-19 14:09:12,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1573, PETRI_PLACES=150, PETRI_TRANSITIONS=140} [2024-11-19 14:09:12,286 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 111 predicate places. [2024-11-19 14:09:12,287 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 140 transitions, 1573 flow [2024-11-19 14:09:12,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:12,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:12,287 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] [2024-11-19 14:09:12,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:12,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 14:09:12,487 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:12,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash 72686607, now seen corresponding path program 4 times [2024-11-19 14:09:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:12,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5185647] [2024-11-19 14:09:12,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:12,519 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:12,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5185647] [2024-11-19 14:09:13,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5185647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636900681] [2024-11-19 14:09:13,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:13,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:13,523 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:13,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:09:13,581 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:13,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:13,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:09:13,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:13,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:13,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:13,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-19 14:09:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636900681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:13,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 4] total 25 [2024-11-19 14:09:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886773488] [2024-11-19 14:09:13,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:13,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 14:09:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 14:09:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-11-19 14:09:13,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:13,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 140 transitions, 1573 flow. Second operand has 27 states, 27 states have (on average 9.518518518518519) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:13,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:13,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:15,096 INFO L124 PetriNetUnfolderBase]: 3164/5983 cut-off events. [2024-11-19 14:09:15,096 INFO L125 PetriNetUnfolderBase]: For 52842/52842 co-relation queries the response was YES. [2024-11-19 14:09:15,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24182 conditions, 5983 events. 3164/5983 cut-off events. For 52842/52842 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 37798 event pairs, 553 based on Foata normal form. 60/6042 useless extension candidates. Maximal degree in co-relation 24038. Up to 2150 conditions per place. [2024-11-19 14:09:15,122 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 167 selfloop transitions, 58 changer transitions 10/242 dead transitions. [2024-11-19 14:09:15,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 242 transitions, 2928 flow [2024-11-19 14:09:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:09:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:09:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 275 transitions. [2024-11-19 14:09:15,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2024-11-19 14:09:15,123 INFO L175 Difference]: Start difference. First operand has 150 places, 140 transitions, 1573 flow. Second operand 20 states and 275 transitions. [2024-11-19 14:09:15,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 242 transitions, 2928 flow [2024-11-19 14:09:15,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 242 transitions, 2782 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:15,199 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 1784 flow [2024-11-19 14:09:15,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1784, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2024-11-19 14:09:15,199 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-11-19 14:09:15,199 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 1784 flow [2024-11-19 14:09:15,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.518518518518519) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:15,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:15,200 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] [2024-11-19 14:09:15,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 14:09:15,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:15,400 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:15,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash 72686608, now seen corresponding path program 5 times [2024-11-19 14:09:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159540496] [2024-11-19 14:09:15,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:15,416 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:15,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159540496] [2024-11-19 14:09:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159540496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780382949] [2024-11-19 14:09:15,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:15,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:15,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:15,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:15,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:09:15,987 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:15,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:15,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 14:09:15,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:09:16,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:16,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:16,268 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 53 [2024-11-19 14:09:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780382949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:16,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 23 [2024-11-19 14:09:16,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948030823] [2024-11-19 14:09:16,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:16,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 14:09:16,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 14:09:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-19 14:09:16,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:16,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 1784 flow. Second operand has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:16,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:16,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:16,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:17,285 INFO L124 PetriNetUnfolderBase]: 3064/5771 cut-off events. [2024-11-19 14:09:17,285 INFO L125 PetriNetUnfolderBase]: For 52285/52285 co-relation queries the response was YES. [2024-11-19 14:09:17,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22937 conditions, 5771 events. 3064/5771 cut-off events. For 52285/52285 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 35981 event pairs, 535 based on Foata normal form. 60/5825 useless extension candidates. Maximal degree in co-relation 21636. Up to 1921 conditions per place. [2024-11-19 14:09:17,315 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 129 selfloop transitions, 67 changer transitions 10/213 dead transitions. [2024-11-19 14:09:17,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 213 transitions, 2513 flow [2024-11-19 14:09:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 14:09:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 14:09:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 236 transitions. [2024-11-19 14:09:17,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31216931216931215 [2024-11-19 14:09:17,316 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 1784 flow. Second operand 18 states and 236 transitions. [2024-11-19 14:09:17,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 213 transitions, 2513 flow [2024-11-19 14:09:17,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 213 transitions, 2407 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-19 14:09:17,389 INFO L231 Difference]: Finished difference. Result has 175 places, 146 transitions, 1753 flow [2024-11-19 14:09:17,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1753, PETRI_PLACES=175, PETRI_TRANSITIONS=146} [2024-11-19 14:09:17,389 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2024-11-19 14:09:17,390 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 146 transitions, 1753 flow [2024-11-19 14:09:17,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:17,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:17,390 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] [2024-11-19 14:09:17,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 14:09:17,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:17,590 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:17,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1425479113, now seen corresponding path program 5 times [2024-11-19 14:09:17,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:17,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741174148] [2024-11-19 14:09:17,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:17,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:17,603 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:17,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741174148] [2024-11-19 14:09:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741174148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430379002] [2024-11-19 14:09:17,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:17,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:17,700 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:17,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:09:17,780 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:17,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:17,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:17,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 14:09:17,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:09:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430379002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:17,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2024-11-19 14:09:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351103428] [2024-11-19 14:09:17,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:17,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:09:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:09:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:09:17,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:09:17,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 146 transitions, 1753 flow. Second operand has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:17,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:17,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:09:17,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:18,807 INFO L124 PetriNetUnfolderBase]: 3492/6747 cut-off events. [2024-11-19 14:09:18,807 INFO L125 PetriNetUnfolderBase]: For 70541/70541 co-relation queries the response was YES. [2024-11-19 14:09:18,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28510 conditions, 6747 events. 3492/6747 cut-off events. For 70541/70541 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 43286 event pairs, 777 based on Foata normal form. 188/6935 useless extension candidates. Maximal degree in co-relation 27968. Up to 1815 conditions per place. [2024-11-19 14:09:18,835 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 75 selfloop transitions, 69 changer transitions 100/251 dead transitions. [2024-11-19 14:09:18,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 251 transitions, 2886 flow [2024-11-19 14:09:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 14:09:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 14:09:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 346 transitions. [2024-11-19 14:09:18,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3922902494331066 [2024-11-19 14:09:18,837 INFO L175 Difference]: Start difference. First operand has 175 places, 146 transitions, 1753 flow. Second operand 21 states and 346 transitions. [2024-11-19 14:09:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 251 transitions, 2886 flow [2024-11-19 14:09:18,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 251 transitions, 2723 flow, removed 10 selfloop flow, removed 21 redundant places. [2024-11-19 14:09:18,902 INFO L231 Difference]: Finished difference. Result has 167 places, 126 transitions, 1775 flow [2024-11-19 14:09:18,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1775, PETRI_PLACES=167, PETRI_TRANSITIONS=126} [2024-11-19 14:09:18,903 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2024-11-19 14:09:18,903 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 126 transitions, 1775 flow [2024-11-19 14:09:18,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:18,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:18,903 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] [2024-11-19 14:09:18,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:19,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 14:09:19,103 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:19,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -422829070, now seen corresponding path program 6 times [2024-11-19 14:09:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:19,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826587034] [2024-11-19 14:09:19,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:19,118 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:19,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:09:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826587034] [2024-11-19 14:09:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826587034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312761655] [2024-11-19 14:09:19,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:19,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:09:19,288 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:19,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:19,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 14:09:19,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:09:19,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312761655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:19,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:09:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895481866] [2024-11-19 14:09:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:19,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:19,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-19 14:09:19,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 126 transitions, 1775 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:19,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:19,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-19 14:09:19,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:19,921 INFO L124 PetriNetUnfolderBase]: 2784/5307 cut-off events. [2024-11-19 14:09:19,921 INFO L125 PetriNetUnfolderBase]: For 63619/63631 co-relation queries the response was YES. [2024-11-19 14:09:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24641 conditions, 5307 events. 2784/5307 cut-off events. For 63619/63631 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 31922 event pairs, 706 based on Foata normal form. 22/5329 useless extension candidates. Maximal degree in co-relation 21502. Up to 3339 conditions per place. [2024-11-19 14:09:19,946 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 107 selfloop transitions, 34 changer transitions 4/152 dead transitions. [2024-11-19 14:09:19,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 152 transitions, 2170 flow [2024-11-19 14:09:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-19 14:09:19,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-19 14:09:19,947 INFO L175 Difference]: Start difference. First operand has 167 places, 126 transitions, 1775 flow. Second operand 6 states and 111 transitions. [2024-11-19 14:09:19,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 152 transitions, 2170 flow [2024-11-19 14:09:20,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 152 transitions, 1982 flow, removed 88 selfloop flow, removed 14 redundant places. [2024-11-19 14:09:20,023 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1657 flow [2024-11-19 14:09:20,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1657, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-19 14:09:20,024 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 88 predicate places. [2024-11-19 14:09:20,024 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1657 flow [2024-11-19 14:09:20,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:20,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:20,024 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] [2024-11-19 14:09:20,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 14:09:20,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:20,225 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:20,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1580207217, now seen corresponding path program 6 times [2024-11-19 14:09:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:20,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170085109] [2024-11-19 14:09:20,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:20,262 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:20,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:20,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170085109] [2024-11-19 14:09:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170085109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784520104] [2024-11-19 14:09:20,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:20,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:20,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:20,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 14:09:20,874 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:20,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:20,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 14:09:20,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:20,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:09:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:21,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:21,948 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 116 treesize of output 104 [2024-11-19 14:09:21,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:21,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 315 treesize of output 299 [2024-11-19 14:09:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784520104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:23,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-19 14:09:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787599851] [2024-11-19 14:09:23,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:23,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 14:09:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 14:09:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1694, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 14:09:23,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:23,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1657 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:23,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:32,017 INFO L124 PetriNetUnfolderBase]: 8538/16349 cut-off events. [2024-11-19 14:09:32,017 INFO L125 PetriNetUnfolderBase]: For 160414/160426 co-relation queries the response was YES. [2024-11-19 14:09:32,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69053 conditions, 16349 events. 8538/16349 cut-off events. For 160414/160426 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 123006 event pairs, 1111 based on Foata normal form. 242/16591 useless extension candidates. Maximal degree in co-relation 63200. Up to 3287 conditions per place. [2024-11-19 14:09:32,104 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 486 selfloop transitions, 416 changer transitions 28/937 dead transitions. [2024-11-19 14:09:32,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 937 transitions, 11044 flow [2024-11-19 14:09:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-19 14:09:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2024-11-19 14:09:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1406 transitions. [2024-11-19 14:09:32,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32501155802126674 [2024-11-19 14:09:32,107 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1657 flow. Second operand 103 states and 1406 transitions. [2024-11-19 14:09:32,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 937 transitions, 11044 flow [2024-11-19 14:09:32,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 937 transitions, 10935 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:32,256 INFO L231 Difference]: Finished difference. Result has 238 places, 538 transitions, 9517 flow [2024-11-19 14:09:32,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=9517, PETRI_PLACES=238, PETRI_TRANSITIONS=538} [2024-11-19 14:09:32,256 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2024-11-19 14:09:32,256 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 538 transitions, 9517 flow [2024-11-19 14:09:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:32,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:32,256 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] [2024-11-19 14:09:32,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 14:09:32,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:32,457 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:32,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1114961545, now seen corresponding path program 7 times [2024-11-19 14:09:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:32,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246263331] [2024-11-19 14:09:32,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:32,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:33,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246263331] [2024-11-19 14:09:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246263331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:33,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492899314] [2024-11-19 14:09:33,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:33,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:33,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:33,342 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:33,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 14:09:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:33,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 14:09:33,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:33,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:09:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:33,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:34,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2024-11-19 14:09:34,625 INFO L349 Elim1Store]: treesize reduction 10, result has 82.5 percent of original size [2024-11-19 14:09:34,626 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 290 treesize of output 243 [2024-11-19 14:09:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:35,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492899314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:35,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:35,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 41 [2024-11-19 14:09:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452486604] [2024-11-19 14:09:35,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:35,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 14:09:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 14:09:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 14:09:35,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:35,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 538 transitions, 9517 flow. Second operand has 43 states, 43 states have (on average 9.093023255813954) internal successors, (391), 43 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:35,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:35,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:35,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:40,789 INFO L124 PetriNetUnfolderBase]: 8513/16368 cut-off events. [2024-11-19 14:09:40,790 INFO L125 PetriNetUnfolderBase]: For 203234/203246 co-relation queries the response was YES. [2024-11-19 14:09:40,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74528 conditions, 16368 events. 8513/16368 cut-off events. For 203234/203246 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 126567 event pairs, 2632 based on Foata normal form. 350/16718 useless extension candidates. Maximal degree in co-relation 73653. Up to 5128 conditions per place. [2024-11-19 14:09:40,893 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 458 selfloop transitions, 280 changer transitions 41/786 dead transitions. [2024-11-19 14:09:40,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 786 transitions, 12226 flow [2024-11-19 14:09:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 14:09:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-19 14:09:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 710 transitions. [2024-11-19 14:09:40,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-11-19 14:09:40,895 INFO L175 Difference]: Start difference. First operand has 238 places, 538 transitions, 9517 flow. Second operand 50 states and 710 transitions. [2024-11-19 14:09:40,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 786 transitions, 12226 flow [2024-11-19 14:09:41,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 786 transitions, 8300 flow, removed 1845 selfloop flow, removed 20 redundant places. [2024-11-19 14:09:41,360 INFO L231 Difference]: Finished difference. Result has 280 places, 531 transitions, 6856 flow [2024-11-19 14:09:41,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6856, PETRI_PLACES=280, PETRI_TRANSITIONS=531} [2024-11-19 14:09:41,360 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 241 predicate places. [2024-11-19 14:09:41,360 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 531 transitions, 6856 flow [2024-11-19 14:09:41,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.093023255813954) internal successors, (391), 43 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:41,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:41,361 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] [2024-11-19 14:09:41,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:41,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:41,561 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:41,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -16159332, now seen corresponding path program 7 times [2024-11-19 14:09:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061547656] [2024-11-19 14:09:41,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:41,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061547656] [2024-11-19 14:09:41,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061547656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:41,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528375644] [2024-11-19 14:09:41,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:41,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:41,962 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:41,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 14:09:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:42,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-19 14:09:42,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:42,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:09:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:42,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:42,996 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 [2024-11-19 14:09:43,031 INFO L349 Elim1Store]: treesize reduction 10, result has 82.5 percent of original size [2024-11-19 14:09:43,031 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 298 treesize of output 251 [2024-11-19 14:09:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528375644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:43,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 41 [2024-11-19 14:09:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082047044] [2024-11-19 14:09:43,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:43,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 14:09:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 14:09:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1579, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 14:09:43,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:43,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 531 transitions, 6856 flow. Second operand has 43 states, 43 states have (on average 9.093023255813954) internal successors, (391), 43 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:43,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:43,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:43,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:49,981 INFO L124 PetriNetUnfolderBase]: 11756/22811 cut-off events. [2024-11-19 14:09:49,981 INFO L125 PetriNetUnfolderBase]: For 141181/141193 co-relation queries the response was YES. [2024-11-19 14:09:50,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85225 conditions, 22811 events. 11756/22811 cut-off events. For 141181/141193 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 184437 event pairs, 2639 based on Foata normal form. 466/23277 useless extension candidates. Maximal degree in co-relation 83864. Up to 5195 conditions per place. [2024-11-19 14:09:50,145 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 559 selfloop transitions, 662 changer transitions 28/1256 dead transitions. [2024-11-19 14:09:50,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 1256 transitions, 14543 flow [2024-11-19 14:09:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-19 14:09:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-11-19 14:09:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1118 transitions. [2024-11-19 14:09:50,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3327380952380952 [2024-11-19 14:09:50,148 INFO L175 Difference]: Start difference. First operand has 280 places, 531 transitions, 6856 flow. Second operand 80 states and 1118 transitions. [2024-11-19 14:09:50,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 1256 transitions, 14543 flow [2024-11-19 14:09:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1256 transitions, 13906 flow, removed 219 selfloop flow, removed 26 redundant places. [2024-11-19 14:09:51,258 INFO L231 Difference]: Finished difference. Result has 359 places, 864 transitions, 12111 flow [2024-11-19 14:09:51,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12111, PETRI_PLACES=359, PETRI_TRANSITIONS=864} [2024-11-19 14:09:51,259 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 320 predicate places. [2024-11-19 14:09:51,259 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 864 transitions, 12111 flow [2024-11-19 14:09:51,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.093023255813954) internal successors, (391), 43 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:51,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:51,260 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] [2024-11-19 14:09:51,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 14:09:51,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 14:09:51,460 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 14:09:51,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -501747805, now seen corresponding path program 8 times [2024-11-19 14:09:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250368567] [2024-11-19 14:09:51,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:51,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:51,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250368567] [2024-11-19 14:09:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250368567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571080501] [2024-11-19 14:09:52,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:52,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:52,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 14:09:52,635 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:52,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:52,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 14:09:52,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:52,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:09:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:53,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:53,922 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 116 treesize of output 104 [2024-11-19 14:09:53,986 INFO L349 Elim1Store]: treesize reduction 10, result has 88.2 percent of original size [2024-11-19 14:09:53,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 307 treesize of output 281 [2024-11-19 14:09:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571080501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:55,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 41 [2024-11-19 14:09:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522467094] [2024-11-19 14:09:55,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:55,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 14:09:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 14:09:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1487, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 14:09:55,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-19 14:09:55,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 864 transitions, 12111 flow. Second operand has 43 states, 43 states have (on average 9.093023255813954) internal successors, (391), 43 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:55,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:55,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-19 14:09:55,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand