./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --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/goblint-regression/28-race_reach_05-lockfuns_racefree.i -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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:17:57,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:17:57,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:17:57,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:17:57,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:17:57,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:17:57,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:17:57,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:17:57,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:17:57,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:17:57,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:17:57,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:17:57,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:17:57,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:17:57,229 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:17:57,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:17:57,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:17:57,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:17:57,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:17:57,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:17:57,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:17:57,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:17:57,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:17:57,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:17:57,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:17:57,232 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:17:57,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:17:57,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:17:57,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:17:57,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:17:57,234 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:17:57,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:17:57,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:17:57,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:17:57,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:57,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:17:57,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:17:57,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:17:57,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:17:57,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:17:57,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:17:57,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:17:57,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:17:57,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:17:57,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-11-10 22:17:57,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:17:57,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:17:57,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:17:57,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:17:57,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:17:57,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-10 22:17:59,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:17:59,313 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:17:59,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-11-10 22:17:59,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81c4bfce/dfac317e9b284f6a8cea4cfccd14cb9f/FLAG5842624ac [2024-11-10 22:17:59,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81c4bfce/dfac317e9b284f6a8cea4cfccd14cb9f [2024-11-10 22:17:59,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:17:59,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:17:59,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:59,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:17:59,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:17:59,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3791cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59, skipping insertion in model container [2024-11-10 22:17:59,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:17:59,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:59,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:17:59,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:59,887 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:17:59,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59 WrapperNode [2024-11-10 22:17:59,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:59,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:59,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:17:59,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:17:59,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,933 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-11-10 22:17:59,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:59,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:17:59,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:17:59,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:17:59,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,969 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-10 22:17:59,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,977 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:17:59,988 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:17:59,989 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:17:59,989 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:17:59,990 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (1/1) ... [2024-11-10 22:17:59,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:18:00,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:00,038 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 22:18:00,040 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 22:18:00,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:18:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 22:18:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 22:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:18:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:18:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:18:00,084 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 22:18:00,224 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:18:00,226 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:18:00,417 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 22:18:00,417 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 22:18:00,473 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:18:00,474 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:18:00,622 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:18:00,629 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:18:00,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:00 BoogieIcfgContainer [2024-11-10 22:18:00,630 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:18:00,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:18:00,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:18:00,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:18:00,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:17:59" (1/3) ... [2024-11-10 22:18:00,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ebb779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:00, skipping insertion in model container [2024-11-10 22:18:00,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:59" (2/3) ... [2024-11-10 22:18:00,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ebb779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:00, skipping insertion in model container [2024-11-10 22:18:00,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:00" (3/3) ... [2024-11-10 22:18:00,642 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-11-10 22:18:00,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:18:00,657 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:18:00,658 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:18:00,703 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 22:18:00,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 71 transitions, 149 flow [2024-11-10 22:18:00,788 INFO L124 PetriNetUnfolderBase]: 15/94 cut-off events. [2024-11-10 22:18:00,789 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:00,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 15/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2024-11-10 22:18:00,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 71 transitions, 149 flow [2024-11-10 22:18:00,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 70 transitions, 147 flow [2024-11-10 22:18:00,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:00,813 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;@736f0d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:00,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 22:18:00,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:00,818 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-10 22:18:00,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:00,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:00,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:00,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:18:00,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1110836548, now seen corresponding path program 1 times [2024-11-10 22:18:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499768229] [2024-11-10 22:18:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:01,259 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 22:18:01,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499768229] [2024-11-10 22:18:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499768229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:01,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:01,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:01,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178694849] [2024-11-10 22:18:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:01,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:01,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71 [2024-11-10 22:18:01,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 22:18:01,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:01,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71 [2024-11-10 22:18:01,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:01,606 INFO L124 PetriNetUnfolderBase]: 182/594 cut-off events. [2024-11-10 22:18:01,607 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:01,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 594 events. 182/594 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3097 event pairs, 72 based on Foata normal form. 161/721 useless extension candidates. Maximal degree in co-relation 967. Up to 353 conditions per place. [2024-11-10 22:18:01,616 INFO L140 encePairwiseOnDemand]: 55/71 looper letters, 54 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-10 22:18:01,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 291 flow [2024-11-10 22:18:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-10 22:18:01,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6866197183098591 [2024-11-10 22:18:01,634 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 147 flow. Second operand 4 states and 195 transitions. [2024-11-10 22:18:01,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 291 flow [2024-11-10 22:18:01,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 85 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:01,642 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 133 flow [2024-11-10 22:18:01,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-11-10 22:18:01,651 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2024-11-10 22:18:01,652 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 133 flow [2024-11-10 22:18:01,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 22:18:01,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:01,653 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:01,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:18:01,653 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:18:01,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2116570446, now seen corresponding path program 1 times [2024-11-10 22:18:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971204010] [2024-11-10 22:18:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:01,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:01,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:01,732 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:01,733 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-10 22:18:01,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-10 22:18:01,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-10 22:18:01,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-10 22:18:01,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-10 22:18:01,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-10 22:18:01,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-10 22:18:01,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-10 22:18:01,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-10 22:18:01,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-10 22:18:01,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-10 22:18:01,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-10 22:18:01,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-10 22:18:01,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:18:01,740 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 22:18:01,743 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:01,744 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:18:01,771 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:18:01,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 107 transitions, 230 flow [2024-11-10 22:18:01,801 INFO L124 PetriNetUnfolderBase]: 28/175 cut-off events. [2024-11-10 22:18:01,801 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:18:01,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 175 events. 28/175 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 626 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2024-11-10 22:18:01,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 107 transitions, 230 flow [2024-11-10 22:18:01,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 107 transitions, 230 flow [2024-11-10 22:18:01,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:01,810 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;@736f0d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:01,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-10 22:18:01,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:01,814 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-10 22:18:01,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:01,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:01,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:01,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:18:01,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -18668282, now seen corresponding path program 1 times [2024-11-10 22:18:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47950307] [2024-11-10 22:18:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:01,907 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 22:18:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47950307] [2024-11-10 22:18:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47950307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:01,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:01,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96822775] [2024-11-10 22:18:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:01,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:01,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-11-10 22:18:01,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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 22:18:01,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:01,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-11-10 22:18:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:03,464 INFO L124 PetriNetUnfolderBase]: 6268/13884 cut-off events. [2024-11-10 22:18:03,465 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-10 22:18:03,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23848 conditions, 13884 events. 6268/13884 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 124445 event pairs, 2964 based on Foata normal form. 3817/16745 useless extension candidates. Maximal degree in co-relation 1645. Up to 9844 conditions per place. [2024-11-10 22:18:03,569 INFO L140 encePairwiseOnDemand]: 85/107 looper letters, 74 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-10 22:18:03,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 410 flow [2024-11-10 22:18:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-11-10 22:18:03,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565420560747663 [2024-11-10 22:18:03,577 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 230 flow. Second operand 4 states and 281 transitions. [2024-11-10 22:18:03,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 410 flow [2024-11-10 22:18:03,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 120 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:03,581 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 222 flow [2024-11-10 22:18:03,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-10 22:18:03,582 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-11-10 22:18:03,584 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 222 flow [2024-11-10 22:18:03,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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 22:18:03,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:03,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:03,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:18:03,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:18:03,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash -436871922, now seen corresponding path program 1 times [2024-11-10 22:18:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:03,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133299513] [2024-11-10 22:18:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:03,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:03,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133299513] [2024-11-10 22:18:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133299513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762903362] [2024-11-10 22:18:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:03,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:03,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:03,729 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 22:18:03,731 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 22:18:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:03,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:03,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:03,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762903362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089354101] [2024-11-10 22:18:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:03,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:03,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:03,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-11-10 22:18:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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 22:18:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-11-10 22:18:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:05,219 INFO L124 PetriNetUnfolderBase]: 5904/12120 cut-off events. [2024-11-10 22:18:05,220 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-11-10 22:18:05,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22382 conditions, 12120 events. 5904/12120 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 102672 event pairs, 518 based on Foata normal form. 196/11851 useless extension candidates. Maximal degree in co-relation 1598. Up to 6025 conditions per place. [2024-11-10 22:18:05,299 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 122 selfloop transitions, 6 changer transitions 0/171 dead transitions. [2024-11-10 22:18:05,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 171 transitions, 632 flow [2024-11-10 22:18:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-10 22:18:05,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.602803738317757 [2024-11-10 22:18:05,303 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 222 flow. Second operand 6 states and 387 transitions. [2024-11-10 22:18:05,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 171 transitions, 632 flow [2024-11-10 22:18:05,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 171 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:05,310 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 228 flow [2024-11-10 22:18:05,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-11-10 22:18:05,313 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-11-10 22:18:05,313 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 228 flow [2024-11-10 22:18:05,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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 22:18:05,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:05,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:05,332 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 22:18:05,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:05,515 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:18:05,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash 596985275, now seen corresponding path program 1 times [2024-11-10 22:18:05,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78448189] [2024-11-10 22:18:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:05,594 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 22:18:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78448189] [2024-11-10 22:18:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78448189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:05,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:05,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650716676] [2024-11-10 22:18:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:05,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:05,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2024-11-10 22:18:05,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 22:18:05,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:05,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2024-11-10 22:18:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:07,142 INFO L124 PetriNetUnfolderBase]: 7335/16445 cut-off events. [2024-11-10 22:18:07,143 INFO L125 PetriNetUnfolderBase]: For 1465/1668 co-relation queries the response was YES. [2024-11-10 22:18:07,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29011 conditions, 16445 events. 7335/16445 cut-off events. For 1465/1668 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 154022 event pairs, 2168 based on Foata normal form. 248/15920 useless extension candidates. Maximal degree in co-relation 20890. Up to 7118 conditions per place. [2024-11-10 22:18:07,228 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 132 selfloop transitions, 12 changer transitions 0/189 dead transitions. [2024-11-10 22:18:07,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 189 transitions, 758 flow [2024-11-10 22:18:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:18:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:18:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2024-11-10 22:18:07,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6915887850467289 [2024-11-10 22:18:07,233 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 228 flow. Second operand 5 states and 370 transitions. [2024-11-10 22:18:07,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 189 transitions, 758 flow [2024-11-10 22:18:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 189 transitions, 747 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:18:07,239 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 316 flow [2024-11-10 22:18:07,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-11-10 22:18:07,240 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2024-11-10 22:18:07,241 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 316 flow [2024-11-10 22:18:07,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 22:18:07,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:07,242 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:18:07,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:18:07,242 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:18:07,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash -658127356, now seen corresponding path program 1 times [2024-11-10 22:18:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:07,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81782814] [2024-11-10 22:18:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:07,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:18:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81782814] [2024-11-10 22:18:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81782814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:07,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:07,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:18:07,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841487954] [2024-11-10 22:18:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:07,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:07,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-11-10 22:18:07,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 22:18:07,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:07,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-11-10 22:18:07,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:08,781 INFO L124 PetriNetUnfolderBase]: 7671/16289 cut-off events. [2024-11-10 22:18:08,781 INFO L125 PetriNetUnfolderBase]: For 5696/5701 co-relation queries the response was YES. [2024-11-10 22:18:08,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33165 conditions, 16289 events. 7671/16289 cut-off events. For 5696/5701 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 146999 event pairs, 1555 based on Foata normal form. 212/16148 useless extension candidates. Maximal degree in co-relation 25277. Up to 10639 conditions per place. [2024-11-10 22:18:08,881 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 116 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-11-10 22:18:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 746 flow [2024-11-10 22:18:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2024-11-10 22:18:08,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6355140186915887 [2024-11-10 22:18:08,883 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 316 flow. Second operand 4 states and 272 transitions. [2024-11-10 22:18:08,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 746 flow [2024-11-10 22:18:08,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 742 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:08,902 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 328 flow [2024-11-10 22:18:08,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-10 22:18:08,903 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 15 predicate places. [2024-11-10 22:18:08,903 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 328 flow [2024-11-10 22:18:08,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 22:18:08,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:08,904 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:18:08,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:18:08,904 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:18:08,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 254072926, now seen corresponding path program 1 times [2024-11-10 22:18:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156363760] [2024-11-10 22:18:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:08,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:08,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:08,931 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:08,931 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-10 22:18:08,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-10 22:18:08,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-10 22:18:08,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-10 22:18:08,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-10 22:18:08,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-10 22:18:08,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-10 22:18:08,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:18:08,935 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 22:18:08,935 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:08,936 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:18:08,958 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:18:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 143 transitions, 313 flow [2024-11-10 22:18:08,980 INFO L124 PetriNetUnfolderBase]: 46/281 cut-off events. [2024-11-10 22:18:08,981 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 22:18:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 281 events. 46/281 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1094 event pairs, 1 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 190. Up to 16 conditions per place. [2024-11-10 22:18:08,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 143 transitions, 313 flow [2024-11-10 22:18:08,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 143 transitions, 313 flow [2024-11-10 22:18:08,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:08,986 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;@736f0d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:08,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:18:08,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:08,988 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-10 22:18:08,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:08,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:08,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:08,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:18:08,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash -83168696, now seen corresponding path program 1 times [2024-11-10 22:18:08,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705151416] [2024-11-10 22:18:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:09,031 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 22:18:09,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705151416] [2024-11-10 22:18:09,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705151416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:09,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:09,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284013211] [2024-11-10 22:18:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:09,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:09,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:09,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 143 [2024-11-10 22:18:09,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 22:18:09,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:09,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 143 [2024-11-10 22:18:09,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:27,370 INFO L124 PetriNetUnfolderBase]: 137235/254625 cut-off events. [2024-11-10 22:18:27,370 INFO L125 PetriNetUnfolderBase]: For 2331/2331 co-relation queries the response was YES. [2024-11-10 22:18:27,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445454 conditions, 254625 events. 137235/254625 cut-off events. For 2331/2331 co-relation queries the response was YES. Maximal size of possible extension queue 5050. Compared 2871762 event pairs, 89480 based on Foata normal form. 75291/313020 useless extension candidates. Maximal degree in co-relation 24556. Up to 189279 conditions per place. [2024-11-10 22:18:28,978 INFO L140 encePairwiseOnDemand]: 115/143 looper letters, 89 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-11-10 22:18:28,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 150 transitions, 511 flow [2024-11-10 22:18:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-11-10 22:18:28,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328671328671329 [2024-11-10 22:18:28,980 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 313 flow. Second operand 4 states and 362 transitions. [2024-11-10 22:18:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 150 transitions, 511 flow [2024-11-10 22:18:28,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 150 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:28,986 INFO L231 Difference]: Finished difference. Result has 130 places, 123 transitions, 293 flow [2024-11-10 22:18:28,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=130, PETRI_TRANSITIONS=123} [2024-11-10 22:18:28,988 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2024-11-10 22:18:28,988 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 123 transitions, 293 flow [2024-11-10 22:18:28,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 22:18:28,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:28,989 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:28,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:18:28,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:18:28,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash -439157230, now seen corresponding path program 1 times [2024-11-10 22:18:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:28,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715360389] [2024-11-10 22:18:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:28,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:29,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715360389] [2024-11-10 22:18:29,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715360389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:29,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900165645] [2024-11-10 22:18:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:29,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:29,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:29,071 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 22:18:29,073 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 22:18:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:29,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:29,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:29,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:29,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900165645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:29,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552426524] [2024-11-10 22:18:29,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:29,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:29,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 143 [2024-11-10 22:18:29,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 123 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:29,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:29,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 143 [2024-11-10 22:18:29,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:43,755 INFO L124 PetriNetUnfolderBase]: 129227/217098 cut-off events. [2024-11-10 22:18:43,755 INFO L125 PetriNetUnfolderBase]: For 10789/10789 co-relation queries the response was YES. [2024-11-10 22:18:44,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408813 conditions, 217098 events. 129227/217098 cut-off events. For 10789/10789 co-relation queries the response was YES. Maximal size of possible extension queue 4170. Compared 2189289 event pairs, 23448 based on Foata normal form. 2940/211693 useless extension candidates. Maximal degree in co-relation 204170. Up to 115292 conditions per place. [2024-11-10 22:18:45,322 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 163 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2024-11-10 22:18:45,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 227 transitions, 837 flow [2024-11-10 22:18:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2024-11-10 22:18:45,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037296037296037 [2024-11-10 22:18:45,325 INFO L175 Difference]: Start difference. First operand has 130 places, 123 transitions, 293 flow. Second operand 6 states and 518 transitions. [2024-11-10 22:18:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 227 transitions, 837 flow [2024-11-10 22:18:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 227 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:45,340 INFO L231 Difference]: Finished difference. Result has 133 places, 122 transitions, 299 flow [2024-11-10 22:18:45,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=133, PETRI_TRANSITIONS=122} [2024-11-10 22:18:45,341 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 8 predicate places. [2024-11-10 22:18:45,341 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 122 transitions, 299 flow [2024-11-10 22:18:45,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:45,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:45,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:45,354 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 22:18:45,542 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,SelfDestructingSolverStorable8 [2024-11-10 22:18:45,543 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:18:45,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1079068957, now seen corresponding path program 1 times [2024-11-10 22:18:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549764609] [2024-11-10 22:18:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:45,594 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 22:18:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549764609] [2024-11-10 22:18:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549764609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:45,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:45,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794102962] [2024-11-10 22:18:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:45,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:45,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 143 [2024-11-10 22:18:45,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 122 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 22:18:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 143 [2024-11-10 22:18:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand