./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/parallel-min-max-1.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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:39,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:39,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:39,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:39,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:39,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:39,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:39,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:39,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:39,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:39,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:39,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:39,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:39,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:39,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:39,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:39,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:39,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:39,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:39,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:39,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:39,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:39,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:39,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:39,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:39,247 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:39,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:39,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:39,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:39,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:39,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:39,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:39,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:39,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:39,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:39,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:39,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:39,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:39,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:39,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2024-11-10 22:23:39,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:39,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:39,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:39,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:39,463 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:39,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-10 22:23:40,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:40,898 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:40,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-10 22:23:40,909 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e45d812/344efa21c05c44f48f9dc63688c0b9e0/FLAGe6b3c3b97 [2024-11-10 22:23:40,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e45d812/344efa21c05c44f48f9dc63688c0b9e0 [2024-11-10 22:23:40,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:40,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:40,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:40,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:40,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:40,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:40" (1/1) ... [2024-11-10 22:23:40,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d4618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:40, skipping insertion in model container [2024-11-10 22:23:40,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:40" (1/1) ... [2024-11-10 22:23:40,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:41,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:41,166 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:41,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:41,218 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:41,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41 WrapperNode [2024-11-10 22:23:41,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:41,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:41,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:41,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:41,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,252 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 123 [2024-11-10 22:23:41,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:41,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:41,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:41,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:41,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,264 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,278 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-10 22:23:41,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:41,294 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:41,295 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:41,295 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:41,295 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (1/1) ... [2024-11-10 22:23:41,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:41,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:41,329 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) [2024-11-10 22:23:41,332 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 [2024-11-10 22:23:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:41,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:41,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:23:41,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:23:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:23:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:23:41,439 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:23:41,534 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:41,535 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:41,796 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:41,797 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:41,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:41,952 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:41,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:41 BoogieIcfgContainer [2024-11-10 22:23:41,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:41,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:41,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:41,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:41,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:40" (1/3) ... [2024-11-10 22:23:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dfffc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:41, skipping insertion in model container [2024-11-10 22:23:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:41" (2/3) ... [2024-11-10 22:23:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dfffc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:41, skipping insertion in model container [2024-11-10 22:23:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:41" (3/3) ... [2024-11-10 22:23:41,959 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-11-10 22:23:41,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:41,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 22:23:41,976 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:42,017 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:23:42,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 169 flow [2024-11-10 22:23:42,088 INFO L124 PetriNetUnfolderBase]: 8/71 cut-off events. [2024-11-10 22:23:42,089 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:23:42,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 8/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-11-10 22:23:42,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 169 flow [2024-11-10 22:23:42,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 148 flow [2024-11-10 22:23:42,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:42,114 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;@54235b6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:42,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 22:23:42,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:42,125 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-10 22:23:42,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:23:42,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:42,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:42,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:42,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2039817743, now seen corresponding path program 1 times [2024-11-10 22:23:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818959034] [2024-11-10 22:23:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818959034] [2024-11-10 22:23:42,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818959034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:42,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:42,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938747459] [2024-11-10 22:23:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:42,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:42,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-10 22:23:42,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:42,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:42,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-10 22:23:42,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:42,884 INFO L124 PetriNetUnfolderBase]: 1646/3135 cut-off events. [2024-11-10 22:23:42,884 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-10 22:23:42,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 3135 events. 1646/3135 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20646 event pairs, 1224 based on Foata normal form. 250/2963 useless extension candidates. Maximal degree in co-relation 5426. Up to 2330 conditions per place. [2024-11-10 22:23:42,963 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 44 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-10 22:23:42,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 244 flow [2024-11-10 22:23:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-10 22:23:42,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-11-10 22:23:42,978 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 148 flow. Second operand 4 states and 146 transitions. [2024-11-10 22:23:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 244 flow [2024-11-10 22:23:42,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:42,987 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 165 flow [2024-11-10 22:23:42,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-10 22:23:42,993 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-10 22:23:42,995 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 165 flow [2024-11-10 22:23:42,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:42,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:42,996 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:42,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:23:42,996 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:42,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1073262144, now seen corresponding path program 1 times [2024-11-10 22:23:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624024105] [2024-11-10 22:23:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624024105] [2024-11-10 22:23:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624024105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174877027] [2024-11-10 22:23:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:43,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:43,142 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) [2024-11-10 22:23:43,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:23:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:43,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:43,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:43,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174877027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:43,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:23:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:23:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853056885] [2024-11-10 22:23:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:43,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:23:43,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-10 22:23:43,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:43,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-10 22:23:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:43,673 INFO L124 PetriNetUnfolderBase]: 1646/3134 cut-off events. [2024-11-10 22:23:43,673 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-10 22:23:43,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 3134 events. 1646/3134 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20630 event pairs, 1224 based on Foata normal form. 1/2713 useless extension candidates. Maximal degree in co-relation 5618. Up to 2325 conditions per place. [2024-11-10 22:23:43,691 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 40 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2024-11-10 22:23:43,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 255 flow [2024-11-10 22:23:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-10 22:23:43,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-11-10 22:23:43,698 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 165 flow. Second operand 6 states and 186 transitions. [2024-11-10 22:23:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 255 flow [2024-11-10 22:23:43,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:43,700 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 172 flow [2024-11-10 22:23:43,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-10 22:23:43,702 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2024-11-10 22:23:43,703 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 172 flow [2024-11-10 22:23:43,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:43,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:43,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:43,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:23:43,908 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 [2024-11-10 22:23:43,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:43,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1088612245, now seen corresponding path program 1 times [2024-11-10 22:23:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833844961] [2024-11-10 22:23:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833844961] [2024-11-10 22:23:43,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833844961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881249899] [2024-11-10 22:23:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:43,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:43,985 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) [2024-11-10 22:23:43,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:23:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:44,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:44,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:44,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:44,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881249899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:44,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:44,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:23:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550670977] [2024-11-10 22:23:44,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:44,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:44,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-10 22:23:44,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:44,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:44,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-10 22:23:44,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:44,498 INFO L124 PetriNetUnfolderBase]: 1649/3152 cut-off events. [2024-11-10 22:23:44,498 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-10 22:23:44,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5697 conditions, 3152 events. 1649/3152 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20807 event pairs, 1224 based on Foata normal form. 3/2734 useless extension candidates. Maximal degree in co-relation 5619. Up to 2332 conditions per place. [2024-11-10 22:23:44,513 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 43 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-11-10 22:23:44,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 338 flow [2024-11-10 22:23:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 289 transitions. [2024-11-10 22:23:44,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39054054054054055 [2024-11-10 22:23:44,516 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 172 flow. Second operand 10 states and 289 transitions. [2024-11-10 22:23:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 338 flow [2024-11-10 22:23:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 308 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:44,518 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 240 flow [2024-11-10 22:23:44,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-10 22:23:44,519 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2024-11-10 22:23:44,519 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 240 flow [2024-11-10 22:23:44,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:44,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:44,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:44,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:23:44,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:23:44,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:44,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1835452716, now seen corresponding path program 1 times [2024-11-10 22:23:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113336389] [2024-11-10 22:23:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113336389] [2024-11-10 22:23:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113336389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:44,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:44,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528569359] [2024-11-10 22:23:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:44,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:44,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-10 22:23:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-10 22:23:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:45,248 INFO L124 PetriNetUnfolderBase]: 3130/5213 cut-off events. [2024-11-10 22:23:45,249 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-10 22:23:45,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 5213 events. 3130/5213 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 31721 event pairs, 1701 based on Foata normal form. 74/4751 useless extension candidates. Maximal degree in co-relation 9976. Up to 3128 conditions per place. [2024-11-10 22:23:45,273 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 94 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2024-11-10 22:23:45,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 522 flow [2024-11-10 22:23:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-10 22:23:45,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-10 22:23:45,276 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 240 flow. Second operand 4 states and 172 transitions. [2024-11-10 22:23:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 522 flow [2024-11-10 22:23:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 511 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:45,281 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 258 flow [2024-11-10 22:23:45,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-11-10 22:23:45,283 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2024-11-10 22:23:45,283 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 258 flow [2024-11-10 22:23:45,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:45,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:45,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:45,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:23:45,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:45,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash 664254452, now seen corresponding path program 1 times [2024-11-10 22:23:45,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:45,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116848065] [2024-11-10 22:23:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:45,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116848065] [2024-11-10 22:23:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116848065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171916705] [2024-11-10 22:23:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:45,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:45,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:45,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:45,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-10 22:23:45,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:45,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:45,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-10 22:23:45,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:45,965 INFO L124 PetriNetUnfolderBase]: 4294/7044 cut-off events. [2024-11-10 22:23:45,965 INFO L125 PetriNetUnfolderBase]: For 715/994 co-relation queries the response was YES. [2024-11-10 22:23:45,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14666 conditions, 7044 events. 4294/7044 cut-off events. For 715/994 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 43468 event pairs, 2336 based on Foata normal form. 282/6653 useless extension candidates. Maximal degree in co-relation 14626. Up to 4266 conditions per place. [2024-11-10 22:23:46,002 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 98 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-10 22:23:46,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 120 transitions, 570 flow [2024-11-10 22:23:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-10 22:23:46,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-10 22:23:46,003 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 258 flow. Second operand 4 states and 170 transitions. [2024-11-10 22:23:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 120 transitions, 570 flow [2024-11-10 22:23:46,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:46,008 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 284 flow [2024-11-10 22:23:46,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-10 22:23:46,009 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-10 22:23:46,009 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 284 flow [2024-11-10 22:23:46,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:46,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:46,009 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:46,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:23:46,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:46,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2068387358, now seen corresponding path program 2 times [2024-11-10 22:23:46,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:46,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006880579] [2024-11-10 22:23:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006880579] [2024-11-10 22:23:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006880579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988634342] [2024-11-10 22:23:46,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:23:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:46,170 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) [2024-11-10 22:23:46,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:23:46,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:23:46,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:23:46,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:23:46,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:23:46,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:23:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988634342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:46,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:46,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2024-11-10 22:23:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832592533] [2024-11-10 22:23:46,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:46,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 22:23:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 22:23:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-10 22:23:46,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 74 [2024-11-10 22:23:46,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 284 flow. Second operand has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:46,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:46,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 74 [2024-11-10 22:23:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:47,129 INFO L124 PetriNetUnfolderBase]: 3130/5673 cut-off events. [2024-11-10 22:23:47,130 INFO L125 PetriNetUnfolderBase]: For 1056/1271 co-relation queries the response was YES. [2024-11-10 22:23:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 5673 events. 3130/5673 cut-off events. For 1056/1271 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 37920 event pairs, 2336 based on Foata normal form. 153/5259 useless extension candidates. Maximal degree in co-relation 12096. Up to 4352 conditions per place. [2024-11-10 22:23:47,153 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 46 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2024-11-10 22:23:47,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 439 flow [2024-11-10 22:23:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:23:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:23:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 418 transitions. [2024-11-10 22:23:47,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3530405405405405 [2024-11-10 22:23:47,155 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 284 flow. Second operand 16 states and 418 transitions. [2024-11-10 22:23:47,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 439 flow [2024-11-10 22:23:47,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 424 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:47,158 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 322 flow [2024-11-10 22:23:47,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=322, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-11-10 22:23:47,159 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2024-11-10 22:23:47,159 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 322 flow [2024-11-10 22:23:47,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:47,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:47,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:47,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:47,360 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:47,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash -884762740, now seen corresponding path program 1 times [2024-11-10 22:23:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739198101] [2024-11-10 22:23:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:23:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:47,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739198101] [2024-11-10 22:23:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739198101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680806730] [2024-11-10 22:23:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:47,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:47,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-10 22:23:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-10 22:23:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:47,837 INFO L124 PetriNetUnfolderBase]: 3129/5671 cut-off events. [2024-11-10 22:23:47,837 INFO L125 PetriNetUnfolderBase]: For 1040/1255 co-relation queries the response was YES. [2024-11-10 22:23:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 5671 events. 3129/5671 cut-off events. For 1040/1255 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 37835 event pairs, 2336 based on Foata normal form. 152/5256 useless extension candidates. Maximal degree in co-relation 11818. Up to 4363 conditions per place. [2024-11-10 22:23:47,866 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 59 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-10 22:23:47,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 83 transitions, 440 flow [2024-11-10 22:23:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-10 22:23:47,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-11-10 22:23:47,868 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 322 flow. Second operand 4 states and 143 transitions. [2024-11-10 22:23:47,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 83 transitions, 440 flow [2024-11-10 22:23:47,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 366 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-10 22:23:47,871 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 252 flow [2024-11-10 22:23:47,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-11-10 22:23:47,872 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-11-10 22:23:47,872 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 252 flow [2024-11-10 22:23:47,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:47,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:47,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:47,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:23:47,874 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:47,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1625957371, now seen corresponding path program 1 times [2024-11-10 22:23:47,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:47,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460710112] [2024-11-10 22:23:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:23:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460710112] [2024-11-10 22:23:47,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460710112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049755234] [2024-11-10 22:23:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:47,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:47,975 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) [2024-11-10 22:23:47,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:23:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:48,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:23:48,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:48,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049755234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:48,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-10 22:23:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567177870] [2024-11-10 22:23:48,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:48,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:23:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:23:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:23:48,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-10 22:23:48,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 252 flow. Second operand has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:48,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:48,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-10 22:23:48,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:49,889 INFO L124 PetriNetUnfolderBase]: 7436/11967 cut-off events. [2024-11-10 22:23:49,890 INFO L125 PetriNetUnfolderBase]: For 1812/2375 co-relation queries the response was YES. [2024-11-10 22:23:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26046 conditions, 11967 events. 7436/11967 cut-off events. For 1812/2375 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 78238 event pairs, 1900 based on Foata normal form. 397/11076 useless extension candidates. Maximal degree in co-relation 25999. Up to 1752 conditions per place. [2024-11-10 22:23:49,960 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 226 selfloop transitions, 30 changer transitions 12/283 dead transitions. [2024-11-10 22:23:49,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 283 transitions, 1320 flow [2024-11-10 22:23:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:23:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:23:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 528 transitions. [2024-11-10 22:23:49,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41971383147853736 [2024-11-10 22:23:49,962 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 252 flow. Second operand 17 states and 528 transitions. [2024-11-10 22:23:49,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 283 transitions, 1320 flow [2024-11-10 22:23:49,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 283 transitions, 1314 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:49,981 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 341 flow [2024-11-10 22:23:49,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=341, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2024-11-10 22:23:49,982 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2024-11-10 22:23:49,982 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 341 flow [2024-11-10 22:23:49,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:49,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:49,983 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:49,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:23:50,187 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 [2024-11-10 22:23:50,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:50,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1336459205, now seen corresponding path program 1 times [2024-11-10 22:23:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:50,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125238757] [2024-11-10 22:23:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:23:50,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125238757] [2024-11-10 22:23:50,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125238757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695574976] [2024-11-10 22:23:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:50,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:50,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:50,294 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) [2024-11-10 22:23:50,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:23:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:50,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:23:50,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:50,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695574976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:50,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:50,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-10 22:23:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112121789] [2024-11-10 22:23:50,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:50,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:23:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:23:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:23:50,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-10 22:23:50,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 341 flow. Second operand has 19 states, 19 states have (on average 20.263157894736842) internal successors, (385), 19 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:50,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:50,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-10 22:23:50,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:51,831 INFO L124 PetriNetUnfolderBase]: 7185/11603 cut-off events. [2024-11-10 22:23:51,831 INFO L125 PetriNetUnfolderBase]: For 4548/4684 co-relation queries the response was YES. [2024-11-10 22:23:51,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27083 conditions, 11603 events. 7185/11603 cut-off events. For 4548/4684 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 76152 event pairs, 1825 based on Foata normal form. 110/10553 useless extension candidates. Maximal degree in co-relation 18289. Up to 1753 conditions per place. [2024-11-10 22:23:51,886 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 158 selfloop transitions, 23 changer transitions 83/279 dead transitions. [2024-11-10 22:23:51,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 279 transitions, 1464 flow [2024-11-10 22:23:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:23:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:23:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 519 transitions. [2024-11-10 22:23:51,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41255961844197137 [2024-11-10 22:23:51,895 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 341 flow. Second operand 17 states and 519 transitions. [2024-11-10 22:23:51,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 279 transitions, 1464 flow [2024-11-10 22:23:51,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 279 transitions, 1377 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-11-10 22:23:51,911 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 315 flow [2024-11-10 22:23:51,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=315, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2024-11-10 22:23:51,913 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 42 predicate places. [2024-11-10 22:23:51,913 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 315 flow [2024-11-10 22:23:51,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.263157894736842) internal successors, (385), 19 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:51,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:51,913 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:51,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:23:52,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:52,114 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:52,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1649753599, now seen corresponding path program 1 times [2024-11-10 22:23:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:52,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586228407] [2024-11-10 22:23:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:52,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586228407] [2024-11-10 22:23:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586228407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990464987] [2024-11-10 22:23:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:52,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:52,187 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) [2024-11-10 22:23:52,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:23:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:52,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:52,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:52,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:52,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990464987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:52,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:23:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870131092] [2024-11-10 22:23:52,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:52,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:52,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:52,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-10 22:23:52,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 315 flow. Second operand has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:52,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:52,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-10 22:23:52,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:53,175 INFO L124 PetriNetUnfolderBase]: 8643/14131 cut-off events. [2024-11-10 22:23:53,175 INFO L125 PetriNetUnfolderBase]: For 6519/6671 co-relation queries the response was YES. [2024-11-10 22:23:53,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33662 conditions, 14131 events. 8643/14131 cut-off events. For 6519/6671 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 91223 event pairs, 2599 based on Foata normal form. 318/13248 useless extension candidates. Maximal degree in co-relation 33534. Up to 4815 conditions per place. [2024-11-10 22:23:53,252 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 220 selfloop transitions, 13 changer transitions 0/251 dead transitions. [2024-11-10 22:23:53,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 251 transitions, 1327 flow [2024-11-10 22:23:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-10 22:23:53,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-10 22:23:53,255 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 315 flow. Second operand 10 states and 415 transitions. [2024-11-10 22:23:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 251 transitions, 1327 flow [2024-11-10 22:23:53,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 251 transitions, 1151 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-11-10 22:23:53,270 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 321 flow [2024-11-10 22:23:53,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-11-10 22:23:53,271 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-10 22:23:53,272 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 321 flow [2024-11-10 22:23:53,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:53,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:53,272 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:53,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:53,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:53,473 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:53,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1834430865, now seen corresponding path program 1 times [2024-11-10 22:23:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:53,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345584002] [2024-11-10 22:23:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:53,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345584002] [2024-11-10 22:23:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345584002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250291656] [2024-11-10 22:23:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:53,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:53,540 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) [2024-11-10 22:23:53,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:23:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:53,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:53,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:53,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:23:53,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250291656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:53,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:53,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:23:53,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218482402] [2024-11-10 22:23:53,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:53,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:53,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:53,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-10 22:23:53,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 321 flow. Second operand has 12 states, 12 states have (on average 24.75) internal successors, (297), 12 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) [2024-11-10 22:23:53,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:53,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-10 22:23:53,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:55,515 INFO L124 PetriNetUnfolderBase]: 16861/26776 cut-off events. [2024-11-10 22:23:55,515 INFO L125 PetriNetUnfolderBase]: For 13327/13799 co-relation queries the response was YES. [2024-11-10 22:23:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61208 conditions, 26776 events. 16861/26776 cut-off events. For 13327/13799 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 174493 event pairs, 4307 based on Foata normal form. 585/24940 useless extension candidates. Maximal degree in co-relation 61103. Up to 8600 conditions per place. [2024-11-10 22:23:55,663 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 266 selfloop transitions, 13 changer transitions 0/300 dead transitions. [2024-11-10 22:23:55,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 300 transitions, 1675 flow [2024-11-10 22:23:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 407 transitions. [2024-11-10 22:23:55,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-10 22:23:55,665 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 321 flow. Second operand 10 states and 407 transitions. [2024-11-10 22:23:55,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 300 transitions, 1675 flow [2024-11-10 22:23:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 300 transitions, 1600 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:55,681 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 390 flow [2024-11-10 22:23:55,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-10 22:23:55,681 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2024-11-10 22:23:55,681 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 390 flow [2024-11-10 22:23:55,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.75) internal successors, (297), 12 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) [2024-11-10 22:23:55,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:55,682 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:55,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:23:55,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:55,883 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:23:55,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1782429609, now seen corresponding path program 2 times [2024-11-10 22:23:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241452994] [2024-11-10 22:23:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-10 22:23:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241452994] [2024-11-10 22:23:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241452994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315369369] [2024-11-10 22:23:56,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:23:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:56,028 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) [2024-11-10 22:23:56,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:23:56,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:23:56,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:23:56,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:56,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-10 22:23:56,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-10 22:23:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315369369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:56,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-10 22:23:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230676068] [2024-11-10 22:23:56,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:56,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:23:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:23:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:23:56,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-10 22:23:56,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:56,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:56,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-10 22:23:56,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:00,341 INFO L124 PetriNetUnfolderBase]: 37049/56579 cut-off events. [2024-11-10 22:24:00,342 INFO L125 PetriNetUnfolderBase]: For 39248/40256 co-relation queries the response was YES. [2024-11-10 22:24:00,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136813 conditions, 56579 events. 37049/56579 cut-off events. For 39248/40256 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 394375 event pairs, 6280 based on Foata normal form. 388/52087 useless extension candidates. Maximal degree in co-relation 109003. Up to 12656 conditions per place. [2024-11-10 22:24:00,883 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 219 selfloop transitions, 43 changer transitions 45/325 dead transitions. [2024-11-10 22:24:00,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 325 transitions, 1880 flow [2024-11-10 22:24:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:24:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:24:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 535 transitions. [2024-11-10 22:24:00,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38051209103840683 [2024-11-10 22:24:00,885 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 390 flow. Second operand 19 states and 535 transitions. [2024-11-10 22:24:00,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 325 transitions, 1880 flow [2024-11-10 22:24:01,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 325 transitions, 1785 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-11-10 22:24:01,028 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 556 flow [2024-11-10 22:24:01,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=556, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-11-10 22:24:01,030 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2024-11-10 22:24:01,031 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 556 flow [2024-11-10 22:24:01,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:01,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:01,031 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:01,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:01,232 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,SelfDestructingSolverStorable11 [2024-11-10 22:24:01,232 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:24:01,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1719832759, now seen corresponding path program 2 times [2024-11-10 22:24:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124282013] [2024-11-10 22:24:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-10 22:24:01,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124282013] [2024-11-10 22:24:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124282013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502135626] [2024-11-10 22:24:01,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:24:01,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:01,395 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) [2024-11-10 22:24:01,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:24:01,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:24:01,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:24:01,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:01,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-10 22:24:01,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-10 22:24:01,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502135626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:01,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:01,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-10 22:24:01,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130358679] [2024-11-10 22:24:01,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:01,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:24:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:24:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:24:01,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-10 22:24:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 556 flow. Second operand has 14 states, 14 states have (on average 21.428571428571427) internal successors, (300), 14 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-10 22:24:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:05,703 INFO L124 PetriNetUnfolderBase]: 35595/55078 cut-off events. [2024-11-10 22:24:05,703 INFO L125 PetriNetUnfolderBase]: For 55902/56563 co-relation queries the response was YES. [2024-11-10 22:24:05,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139941 conditions, 55078 events. 35595/55078 cut-off events. For 55902/56563 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 391132 event pairs, 5585 based on Foata normal form. 670/50963 useless extension candidates. Maximal degree in co-relation 108519. Up to 13226 conditions per place. [2024-11-10 22:24:06,030 INFO L140 encePairwiseOnDemand]: 59/74 looper letters, 0 selfloop transitions, 0 changer transitions 334/334 dead transitions. [2024-11-10 22:24:06,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 334 transitions, 2181 flow [2024-11-10 22:24:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:24:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:24:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 524 transitions. [2024-11-10 22:24:06,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37268847795163584 [2024-11-10 22:24:06,033 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 556 flow. Second operand 19 states and 524 transitions. [2024-11-10 22:24:06,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 334 transitions, 2181 flow [2024-11-10 22:24:06,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 334 transitions, 2144 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-10 22:24:06,176 INFO L231 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2024-11-10 22:24:06,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2024-11-10 22:24:06,176 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-10 22:24:06,176 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2024-11-10 22:24:06,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.428571428571427) internal successors, (300), 14 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:06,178 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-10 22:24:06,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-10 22:24:06,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:24:06,380 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,SelfDestructingSolverStorable12 [2024-11-10 22:24:06,380 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:06,384 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:24:06,385 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:24:06,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:24:06 BasicIcfg [2024-11-10 22:24:06,388 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:24:06,388 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:24:06,388 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:24:06,389 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:24:06,389 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:41" (3/4) ... [2024-11-10 22:24:06,390 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:24:06,392 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 22:24:06,392 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 22:24:06,392 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 22:24:06,395 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 22:24:06,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 22:24:06,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 22:24:06,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 22:24:06,461 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:24:06,462 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:24:06,462 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:24:06,462 INFO L158 Benchmark]: Toolchain (without parser) took 25538.10ms. Allocated memory was 178.3MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 108.0MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-10 22:24:06,462 INFO L158 Benchmark]: CDTParser took 0.75ms. Allocated memory is still 178.3MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.12ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 94.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 178.3MB. Free memory was 93.9MB in the beginning and 92.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: Boogie Preprocessor took 40.43ms. Allocated memory is still 178.3MB. Free memory was 92.0MB in the beginning and 89.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: IcfgBuilder took 658.33ms. Allocated memory is still 178.3MB. Free memory was 89.7MB in the beginning and 112.1MB in the end (delta: -22.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: TraceAbstraction took 24433.73ms. Allocated memory was 178.3MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 111.8MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-10 22:24:06,463 INFO L158 Benchmark]: Witness Printer took 73.52ms. Allocated memory is still 5.1GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:24:06,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75ms. Allocated memory is still 178.3MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.12ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 94.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 178.3MB. Free memory was 93.9MB in the beginning and 92.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.43ms. Allocated memory is still 178.3MB. Free memory was 92.0MB in the beginning and 89.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 658.33ms. Allocated memory is still 178.3MB. Free memory was 89.7MB in the beginning and 112.1MB in the end (delta: -22.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 24433.73ms. Allocated memory was 178.3MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 111.8MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 73.52ms. Allocated memory is still 5.1GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.3s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2127 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2040 mSDsluCounter, 1138 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1072 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7958 IncrementalHoareTripleChecker+Invalid, 8027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 66 mSDtfsCounter, 7958 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 624 SyntacticMatches, 11 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=556occurred in iteration=12, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 821 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1129 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1206 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 440/677 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 22:24:06,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE