./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_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_20-callback_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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:18:30,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:18:31,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:18:31,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:18:31,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:18:31,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:18:31,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:18:31,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:18:31,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:18:31,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:18:31,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:18:31,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:18:31,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:18:31,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:18:31,098 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:18:31,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:18:31,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:18:31,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:18:31,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:18:31,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:18:31,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:18:31,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:18:31,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:18:31,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:18:31,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:18:31,102 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:18:31,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:18:31,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:18:31,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:18:31,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:18:31,104 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:18:31,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:18:31,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:18:31,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:18:31,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:18:31,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:18:31,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:18:31,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:18:31,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:18:31,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:18:31,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:18:31,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:18:31,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:18:31,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:18:31,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-11-10 22:18:31,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:18:31,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:18:31,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:18:31,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:18:31,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:18:31,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-10 22:18:32,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:18:33,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:18:33,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-10 22:18:33,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eba41d5e/b21730a4920543ea8b0fa1f60549912c/FLAGc4b8e4c78 [2024-11-10 22:18:33,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eba41d5e/b21730a4920543ea8b0fa1f60549912c [2024-11-10 22:18:33,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:18:33,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:18:33,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:18:33,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:18:33,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:18:33,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b642c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33, skipping insertion in model container [2024-11-10 22:18:33,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:18:33,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:18:33,672 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:18:33,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:18:33,778 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:18:33,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33 WrapperNode [2024-11-10 22:18:33,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:18:33,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:18:33,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:18:33,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:18:33,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,842 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 200 [2024-11-10 22:18:33,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:18:33,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:18:33,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:18:33,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:18:33,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,875 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 22:18:33,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,883 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:18:33,893 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:18:33,893 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:18:33,893 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:18:33,894 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (1/1) ... [2024-11-10 22:18:33,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:18:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:33,928 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 22:18:33,931 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 22:18:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:18:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:18:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:18:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:18:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:18:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:18:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 22:18:33,994 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 22:18:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:18:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:18:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:18:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:18:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:18:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:18:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:18:33,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:18:33,998 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 22:18:34,229 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:18:34,231 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:18:34,571 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 22:18:34,572 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 22:18:34,607 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:18:34,608 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:18:34,876 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:18:34,878 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:18:34,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:34 BoogieIcfgContainer [2024-11-10 22:18:34,879 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:18:34,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:18:34,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:18:34,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:18:34,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:18:33" (1/3) ... [2024-11-10 22:18:34,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ddcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:34, skipping insertion in model container [2024-11-10 22:18:34,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:33" (2/3) ... [2024-11-10 22:18:34,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ddcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:34, skipping insertion in model container [2024-11-10 22:18:34,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:34" (3/3) ... [2024-11-10 22:18:34,892 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-11-10 22:18:34,911 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:18:34,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:18:34,911 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:18:34,964 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 22:18:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 81 transitions, 169 flow [2024-11-10 22:18:35,062 INFO L124 PetriNetUnfolderBase]: 25/135 cut-off events. [2024-11-10 22:18:35,063 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 25/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 463 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 72. Up to 6 conditions per place. [2024-11-10 22:18:35,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 81 transitions, 169 flow [2024-11-10 22:18:35,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 80 transitions, 167 flow [2024-11-10 22:18:35,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:35,102 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;@3795339d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:35,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 22:18:35,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:35,112 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:18:35,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:35,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:35,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:35,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:35,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1996829489, now seen corresponding path program 1 times [2024-11-10 22:18:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800016353] [2024-11-10 22:18:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:35,600 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 22:18:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800016353] [2024-11-10 22:18:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800016353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:35,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:35,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100581643] [2024-11-10 22:18:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:35,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:35,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-10 22:18:35,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 22:18:35,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:35,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-10 22:18:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:35,919 INFO L124 PetriNetUnfolderBase]: 140/489 cut-off events. [2024-11-10 22:18:35,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:35,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 489 events. 140/489 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2548 event pairs, 0 based on Foata normal form. 115/568 useless extension candidates. Maximal degree in co-relation 766. Up to 276 conditions per place. [2024-11-10 22:18:35,929 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 41 selfloop transitions, 3 changer transitions 1/80 dead transitions. [2024-11-10 22:18:35,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 257 flow [2024-11-10 22:18:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-10 22:18:35,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-10 22:18:35,950 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 167 flow. Second operand 4 states and 204 transitions. [2024-11-10 22:18:35,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 257 flow [2024-11-10 22:18:35,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:35,960 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 149 flow [2024-11-10 22:18:35,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-11-10 22:18:35,968 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-11-10 22:18:35,969 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 149 flow [2024-11-10 22:18:35,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 22:18:35,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:35,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:35,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:18:35,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:35,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1051330691, now seen corresponding path program 1 times [2024-11-10 22:18:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:35,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996987716] [2024-11-10 22:18:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:36,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:36,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:36,187 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:36,192 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-10 22:18:36,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-10 22:18:36,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-10 22:18:36,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-10 22:18:36,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-10 22:18:36,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-10 22:18:36,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-10 22:18:36,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-10 22:18:36,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-10 22:18:36,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-10 22:18:36,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-10 22:18:36,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:18:36,199 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 22:18:36,203 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:36,203 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:18:36,231 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:18:36,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 96 transitions, 208 flow [2024-11-10 22:18:36,262 INFO L124 PetriNetUnfolderBase]: 41/226 cut-off events. [2024-11-10 22:18:36,263 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:18:36,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 226 events. 41/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 932 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 143. Up to 9 conditions per place. [2024-11-10 22:18:36,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 96 transitions, 208 flow [2024-11-10 22:18:36,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 96 transitions, 208 flow [2024-11-10 22:18:36,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:36,271 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;@3795339d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:36,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 22:18:36,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:36,278 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 22:18:36,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:36,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:36,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:36,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:36,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 541886462, now seen corresponding path program 1 times [2024-11-10 22:18:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:36,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846091482] [2024-11-10 22:18:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:36,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:36,392 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 22:18:36,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846091482] [2024-11-10 22:18:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846091482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:36,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:36,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:36,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594442123] [2024-11-10 22:18:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:36,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:36,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 96 [2024-11-10 22:18:36,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 22:18:36,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:36,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 96 [2024-11-10 22:18:36,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:37,015 INFO L124 PetriNetUnfolderBase]: 2250/4982 cut-off events. [2024-11-10 22:18:37,016 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-10 22:18:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8646 conditions, 4982 events. 2250/4982 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 38846 event pairs, 990 based on Foata normal form. 1232/5848 useless extension candidates. Maximal degree in co-relation 1142. Up to 3600 conditions per place. [2024-11-10 22:18:37,059 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 54 selfloop transitions, 3 changer transitions 1/98 dead transitions. [2024-11-10 22:18:37,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 328 flow [2024-11-10 22:18:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-10 22:18:37,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-11-10 22:18:37,065 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 208 flow. Second operand 4 states and 239 transitions. [2024-11-10 22:18:37,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 328 flow [2024-11-10 22:18:37,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:37,069 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 204 flow [2024-11-10 22:18:37,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2024-11-10 22:18:37,070 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2024-11-10 22:18:37,070 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 204 flow [2024-11-10 22:18:37,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 22:18:37,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:37,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:37,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:18:37,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:37,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 627527158, now seen corresponding path program 1 times [2024-11-10 22:18:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:37,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073936728] [2024-11-10 22:18:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:37,242 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 22:18:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073936728] [2024-11-10 22:18:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073936728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134324820] [2024-11-10 22:18:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:37,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:37,246 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 22:18:37,248 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 22:18:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:37,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:37,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:37,476 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 22:18:37,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:37,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134324820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:37,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:37,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790904263] [2024-11-10 22:18:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:37,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:37,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:37,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 96 [2024-11-10 22:18:37,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 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 22:18:37,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:37,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 96 [2024-11-10 22:18:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:38,158 INFO L124 PetriNetUnfolderBase]: 2070/4873 cut-off events. [2024-11-10 22:18:38,159 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-11-10 22:18:38,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8479 conditions, 4873 events. 2070/4873 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 39419 event pairs, 112 based on Foata normal form. 49/4634 useless extension candidates. Maximal degree in co-relation 1227. Up to 2512 conditions per place. [2024-11-10 22:18:38,206 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-11-10 22:18:38,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 120 transitions, 434 flow [2024-11-10 22:18:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-11-10 22:18:38,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-11-10 22:18:38,209 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 204 flow. Second operand 6 states and 321 transitions. [2024-11-10 22:18:38,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 120 transitions, 434 flow [2024-11-10 22:18:38,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:38,216 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 210 flow [2024-11-10 22:18:38,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-11-10 22:18:38,218 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2024-11-10 22:18:38,219 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 210 flow [2024-11-10 22:18:38,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 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 22:18:38,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:38,220 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:18:38,239 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 22:18:38,423 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 22:18:38,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:38,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2021494072, now seen corresponding path program 1 times [2024-11-10 22:18:38,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:38,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597206313] [2024-11-10 22:18:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:38,507 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 22:18:38,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:38,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597206313] [2024-11-10 22:18:38,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597206313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:38,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:38,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:18:38,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946281037] [2024-11-10 22:18:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:38,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:38,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:38,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 96 [2024-11-10 22:18:38,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:18:38,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:38,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 96 [2024-11-10 22:18:38,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:39,006 INFO L124 PetriNetUnfolderBase]: 1986/4456 cut-off events. [2024-11-10 22:18:39,007 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-11-10 22:18:39,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8042 conditions, 4456 events. 1986/4456 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 33940 event pairs, 363 based on Foata normal form. 49/4283 useless extension candidates. Maximal degree in co-relation 3956. Up to 2804 conditions per place. [2024-11-10 22:18:39,045 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 61 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-10 22:18:39,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 390 flow [2024-11-10 22:18:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-10 22:18:39,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-11-10 22:18:39,048 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 210 flow. Second operand 4 states and 226 transitions. [2024-11-10 22:18:39,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 390 flow [2024-11-10 22:18:39,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 107 transitions, 380 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:18:39,057 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 216 flow [2024-11-10 22:18:39,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-10 22:18:39,058 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2024-11-10 22:18:39,059 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 216 flow [2024-11-10 22:18:39,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:18:39,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:39,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:39,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:18:39,059 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:39,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 468401099, now seen corresponding path program 1 times [2024-11-10 22:18:39,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:39,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493838908] [2024-11-10 22:18:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:39,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493838908] [2024-11-10 22:18:39,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493838908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:39,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090988540] [2024-11-10 22:18:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:39,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:39,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:39,176 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 22:18:39,179 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 22:18:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:39,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:18:39,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:39,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:18:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:39,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090988540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:18:39,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:18:39,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:18:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573515285] [2024-11-10 22:18:39,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:18:39,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:18:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:18:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:18:39,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 96 [2024-11-10 22:18:39,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 216 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 22:18:39,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:39,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 96 [2024-11-10 22:18:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:39,661 INFO L124 PetriNetUnfolderBase]: 312/717 cut-off events. [2024-11-10 22:18:39,662 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2024-11-10 22:18:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 717 events. 312/717 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3932 event pairs, 0 based on Foata normal form. 56/773 useless extension candidates. Maximal degree in co-relation 343. Up to 266 conditions per place. [2024-11-10 22:18:39,669 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-10 22:18:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 302 flow [2024-11-10 22:18:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:18:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:18:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-10 22:18:39,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-10 22:18:39,671 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 216 flow. Second operand 7 states and 340 transitions. [2024-11-10 22:18:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 302 flow [2024-11-10 22:18:39,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 289 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:18:39,677 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 107 flow [2024-11-10 22:18:39,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-10 22:18:39,678 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -36 predicate places. [2024-11-10 22:18:39,678 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 107 flow [2024-11-10 22:18:39,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 22:18:39,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:39,679 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:18:39,698 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 22:18:39,884 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,SelfDestructingSolverStorable5 [2024-11-10 22:18:39,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:39,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1702121685, now seen corresponding path program 1 times [2024-11-10 22:18:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730089447] [2024-11-10 22:18:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:39,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:39,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:39,948 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-10 22:18:39,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-10 22:18:39,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-10 22:18:39,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-10 22:18:39,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-10 22:18:39,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:18:39,954 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 22:18:39,954 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:39,954 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:18:39,983 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:18:39,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 111 transitions, 249 flow [2024-11-10 22:18:40,014 INFO L124 PetriNetUnfolderBase]: 62/342 cut-off events. [2024-11-10 22:18:40,014 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 22:18:40,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 342 events. 62/342 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1538 event pairs, 1 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 241. Up to 16 conditions per place. [2024-11-10 22:18:40,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 111 transitions, 249 flow [2024-11-10 22:18:40,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 111 transitions, 249 flow [2024-11-10 22:18:40,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:40,020 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;@3795339d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:40,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 22:18:40,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:40,023 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:18:40,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:40,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:40,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:40,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:40,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -469304725, now seen corresponding path program 1 times [2024-11-10 22:18:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:40,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360380591] [2024-11-10 22:18:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:40,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:40,093 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 22:18:40,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:40,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360380591] [2024-11-10 22:18:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360380591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:40,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:40,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640176047] [2024-11-10 22:18:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:40,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:40,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:40,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-10 22:18:40,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 22:18:40,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:40,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-10 22:18:40,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:44,309 INFO L124 PetriNetUnfolderBase]: 24661/43500 cut-off events. [2024-11-10 22:18:44,309 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2024-11-10 22:18:44,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78649 conditions, 43500 events. 24661/43500 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 390707 event pairs, 15385 based on Foata normal form. 11572/52428 useless extension candidates. Maximal degree in co-relation 8621. Up to 34712 conditions per place. [2024-11-10 22:18:44,692 INFO L140 encePairwiseOnDemand]: 90/111 looper letters, 62 selfloop transitions, 3 changer transitions 1/111 dead transitions. [2024-11-10 22:18:44,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 381 flow [2024-11-10 22:18:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-11-10 22:18:44,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6058558558558559 [2024-11-10 22:18:44,694 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 249 flow. Second operand 4 states and 269 transitions. [2024-11-10 22:18:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 381 flow [2024-11-10 22:18:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 381 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:44,700 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 241 flow [2024-11-10 22:18:44,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-11-10 22:18:44,703 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, 5 predicate places. [2024-11-10 22:18:44,703 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 241 flow [2024-11-10 22:18:44,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 22:18:44,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:44,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:44,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:18:44,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:44,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2050626288, now seen corresponding path program 1 times [2024-11-10 22:18:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197606198] [2024-11-10 22:18:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:44,792 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 22:18:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197606198] [2024-11-10 22:18:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197606198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621555782] [2024-11-10 22:18:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:44,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:44,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:44,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:18:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:44,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:44,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:44,972 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 22:18:44,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621555782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126431760] [2024-11-10 22:18:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:44,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:44,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-10 22:18:44,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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 22:18:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:44,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-10 22:18:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:48,354 INFO L124 PetriNetUnfolderBase]: 22543/42986 cut-off events. [2024-11-10 22:18:48,355 INFO L125 PetriNetUnfolderBase]: For 1827/1827 co-relation queries the response was YES. [2024-11-10 22:18:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76720 conditions, 42986 events. 22543/42986 cut-off events. For 1827/1827 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 419154 event pairs, 3321 based on Foata normal form. 392/41121 useless extension candidates. Maximal degree in co-relation 65503. Up to 23839 conditions per place. [2024-11-10 22:18:48,602 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 94 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-10 22:18:48,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 145 transitions, 535 flow [2024-11-10 22:18:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2024-11-10 22:18:48,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570570570570571 [2024-11-10 22:18:48,605 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 241 flow. Second operand 6 states and 371 transitions. [2024-11-10 22:18:48,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 145 transitions, 535 flow [2024-11-10 22:18:48,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 145 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:48,614 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 247 flow [2024-11-10 22:18:48,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2024-11-10 22:18:48,615 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2024-11-10 22:18:48,615 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 247 flow [2024-11-10 22:18:48,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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 22:18:48,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:48,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:18:48,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:18:48,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:48,816 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:48,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 855095133, now seen corresponding path program 1 times [2024-11-10 22:18:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773449667] [2024-11-10 22:18:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:48,893 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 22:18:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773449667] [2024-11-10 22:18:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773449667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:48,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:18:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623549497] [2024-11-10 22:18:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:48,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:48,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-10 22:18:48,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 247 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 22:18:48,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:48,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-10 22:18:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:51,889 INFO L124 PetriNetUnfolderBase]: 21577/41693 cut-off events. [2024-11-10 22:18:51,889 INFO L125 PetriNetUnfolderBase]: For 3809/3809 co-relation queries the response was YES. [2024-11-10 22:18:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74868 conditions, 41693 events. 21577/41693 cut-off events. For 3809/3809 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 408758 event pairs, 1609 based on Foata normal form. 392/40261 useless extension candidates. Maximal degree in co-relation 8382. Up to 26581 conditions per place. [2024-11-10 22:18:52,110 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 81 selfloop transitions, 6 changer transitions 0/132 dead transitions. [2024-11-10 22:18:52,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 491 flow [2024-11-10 22:18:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-10 22:18:52,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2024-11-10 22:18:52,112 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 247 flow. Second operand 4 states and 266 transitions. [2024-11-10 22:18:52,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 491 flow [2024-11-10 22:18:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 481 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:18:52,124 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 253 flow [2024-11-10 22:18:52,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2024-11-10 22:18:52,126 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2024-11-10 22:18:52,127 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 253 flow [2024-11-10 22:18:52,127 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 22:18:52,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:52,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:52,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:18:52,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:52,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1460486931, now seen corresponding path program 1 times [2024-11-10 22:18:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:52,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017995513] [2024-11-10 22:18:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:52,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:52,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:52,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017995513] [2024-11-10 22:18:52,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017995513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438857885] [2024-11-10 22:18:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:52,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:52,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:52,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:18:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:52,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:18:52,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:52,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:18:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438857885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:18:52,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:18:52,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:18:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246085237] [2024-11-10 22:18:52,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:18:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:18:52,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:18:52,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:18:52,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-10 22:18:52,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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 22:18:52,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:52,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-10 22:18:52,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:55,377 INFO L124 PetriNetUnfolderBase]: 20059/38115 cut-off events. [2024-11-10 22:18:55,377 INFO L125 PetriNetUnfolderBase]: For 6183/6183 co-relation queries the response was YES. [2024-11-10 22:18:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69668 conditions, 38115 events. 20059/38115 cut-off events. For 6183/6183 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 360191 event pairs, 611 based on Foata normal form. 56/36581 useless extension candidates. Maximal degree in co-relation 7845. Up to 24077 conditions per place. [2024-11-10 22:18:55,555 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 102 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2024-11-10 22:18:55,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 604 flow [2024-11-10 22:18:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:18:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:18:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2024-11-10 22:18:55,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2024-11-10 22:18:55,558 INFO L175 Difference]: Start difference. First operand has 104 places, 96 transitions, 253 flow. Second operand 7 states and 426 transitions. [2024-11-10 22:18:55,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 604 flow [2024-11-10 22:18:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:18:55,566 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 291 flow [2024-11-10 22:18:55,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-11-10 22:18:55,569 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, 13 predicate places. [2024-11-10 22:18:55,569 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 291 flow [2024-11-10 22:18:55,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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 22:18:55,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:55,570 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-10 22:18:55,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:18:55,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:55,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:55,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1835804062, now seen corresponding path program 1 times [2024-11-10 22:18:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704974110] [2024-11-10 22:18:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:55,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:55,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:55,838 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-10 22:18:55,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-10 22:18:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-10 22:18:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-10 22:18:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-10 22:18:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-10 22:18:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:18:55,842 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 22:18:55,843 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:55,843 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 22:18:55,874 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 22:18:55,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 126 transitions, 292 flow [2024-11-10 22:18:55,907 INFO L124 PetriNetUnfolderBase]: 95/510 cut-off events. [2024-11-10 22:18:55,907 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 22:18:55,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 510 events. 95/510 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2431 event pairs, 6 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 370. Up to 32 conditions per place. [2024-11-10 22:18:55,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 126 transitions, 292 flow [2024-11-10 22:18:55,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 126 transitions, 292 flow [2024-11-10 22:18:55,914 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:55,914 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;@3795339d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:55,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 22:18:55,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:55,917 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 22:18:55,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:55,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:55,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:55,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-10 22:18:55,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1036744072, now seen corresponding path program 1 times [2024-11-10 22:18:55,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:55,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053091085] [2024-11-10 22:18:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:55,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:55,989 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 22:18:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053091085] [2024-11-10 22:18:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053091085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644751965] [2024-11-10 22:18:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:55,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:55,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:56,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2024-11-10 22:18:56,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 126 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 22:18:56,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:56,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2024-11-10 22:18:56,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand