./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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_08-cond_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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:47:19,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:47:19,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:47:19,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:47:19,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:47:19,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:47:19,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:47:19,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:47:19,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:47:19,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:47:19,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:47:19,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:47:19,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:47:19,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:47:19,961 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:47:19,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:47:19,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:47:19,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:47:19,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:47:19,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:47:19,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:47:19,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:47:19,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:47:19,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:47:19,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:47:19,968 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:47:19,969 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:47:19,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:47:19,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:47:19,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:47:19,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:47:19,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:47:19,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:47:19,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:47:19,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:19,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:47:19,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:47:19,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:47:19,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:47:19,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:47:19,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:47:19,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:47:19,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:47:19,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:47:19,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-11-17 07:47:20,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:47:20,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:47:20,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:47:20,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:47:20,300 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:47:20,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-17 07:47:21,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:47:22,026 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:47:22,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-17 07:47:22,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4df58fd9/9f46854da07b45b9945975187c6ab076/FLAGf8bc15e47 [2024-11-17 07:47:22,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4df58fd9/9f46854da07b45b9945975187c6ab076 [2024-11-17 07:47:22,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:47:22,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:47:22,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:22,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:47:22,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:47:22,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc29dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22, skipping insertion in model container [2024-11-17 07:47:22,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:47:22,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:22,594 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:47:22,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:22,714 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:47:22,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22 WrapperNode [2024-11-17 07:47:22,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:22,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:22,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:47:22,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:47:22,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,785 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2024-11-17 07:47:22,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:22,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:47:22,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:47:22,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:47:22,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,827 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]. [2024-11-17 07:47:22,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,841 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:47:22,855 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:47:22,855 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:47:22,856 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:47:22,858 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (1/1) ... [2024-11-17 07:47:22,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:22,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:22,892 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) [2024-11-17 07:47:22,895 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 [2024-11-17 07:47:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:47:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:47:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:47:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:47:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:47:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:47:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:47:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:47:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:47:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:47:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:47:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:47:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:47:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:47:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:47:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:47:22,955 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:47:23,107 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:47:23,109 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:47:23,397 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:47:23,397 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:47:23,436 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:47:23,436 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:47:23,633 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:47:23,633 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:47:23,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:23 BoogieIcfgContainer [2024-11-17 07:47:23,635 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:47:23,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:47:23,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:47:23,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:47:23,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:47:22" (1/3) ... [2024-11-17 07:47:23,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8baef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:23, skipping insertion in model container [2024-11-17 07:47:23,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:22" (2/3) ... [2024-11-17 07:47:23,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8baef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:23, skipping insertion in model container [2024-11-17 07:47:23,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:23" (3/3) ... [2024-11-17 07:47:23,645 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-11-17 07:47:23,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:47:23,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:47:23,663 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:47:23,711 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:47:23,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 76 transitions, 159 flow [2024-11-17 07:47:23,801 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-17 07:47:23,802 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:23,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 322 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2024-11-17 07:47:23,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 76 transitions, 159 flow [2024-11-17 07:47:23,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 75 transitions, 157 flow [2024-11-17 07:47:23,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:23,828 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;@1f26f9d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:23,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:47:23,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:23,835 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-17 07:47:23,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:23,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:23,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:23,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:47:23,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 347686019, now seen corresponding path program 1 times [2024-11-17 07:47:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218534948] [2024-11-17 07:47:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:24,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218534948] [2024-11-17 07:47:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218534948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:24,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482877640] [2024-11-17 07:47:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:24,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:24,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2024-11-17 07:47:24,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 157 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) [2024-11-17 07:47:24,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:24,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2024-11-17 07:47:24,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:24,691 INFO L124 PetriNetUnfolderBase]: 168/520 cut-off events. [2024-11-17 07:47:24,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:24,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 520 events. 168/520 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2745 event pairs, 0 based on Foata normal form. 139/606 useless extension candidates. Maximal degree in co-relation 810. Up to 279 conditions per place. [2024-11-17 07:47:24,702 INFO L140 encePairwiseOnDemand]: 60/76 looper letters, 48 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-17 07:47:24,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 281 flow [2024-11-17 07:47:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-17 07:47:24,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2024-11-17 07:47:24,722 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 157 flow. Second operand 4 states and 217 transitions. [2024-11-17 07:47:24,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 281 flow [2024-11-17 07:47:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 281 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:24,737 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 143 flow [2024-11-17 07:47:24,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-11-17 07:47:24,744 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-11-17 07:47:24,745 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 143 flow [2024-11-17 07:47:24,746 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) [2024-11-17 07:47:24,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:24,746 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:24,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:47:24,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:47:24,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash -697753527, now seen corresponding path program 1 times [2024-11-17 07:47:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:24,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716364941] [2024-11-17 07:47:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:24,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:24,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:24,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:24,849 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:24,851 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:47:24,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:47:24,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:47:24,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:47:24,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:47:24,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:47:24,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:47:24,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:47:24,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:47:24,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:47:24,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:47:24,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:47:24,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:47:24,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:47:24,856 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:47:24,860 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:24,860 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:47:24,894 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:47:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:24,924 INFO L124 PetriNetUnfolderBase]: 37/191 cut-off events. [2024-11-17 07:47:24,925 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:47:24,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 191 events. 37/191 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 706 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 113. Up to 9 conditions per place. [2024-11-17 07:47:24,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:24,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:24,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:24,935 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;@1f26f9d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:24,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:47:24,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:24,941 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:24,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:24,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:24,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:24,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:24,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash -663485948, now seen corresponding path program 1 times [2024-11-17 07:47:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:24,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905122141] [2024-11-17 07:47:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905122141] [2024-11-17 07:47:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905122141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:25,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490712067] [2024-11-17 07:47:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:25,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:25,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:25,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:25,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-17 07:47:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:25,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:25,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:26,432 INFO L124 PetriNetUnfolderBase]: 4886/10783 cut-off events. [2024-11-17 07:47:26,432 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-17 07:47:26,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18287 conditions, 10783 events. 4886/10783 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 96942 event pairs, 2084 based on Foata normal form. 3168/12973 useless extension candidates. Maximal degree in co-relation 1460. Up to 7400 conditions per place. [2024-11-17 07:47:26,529 INFO L140 encePairwiseOnDemand]: 89/111 looper letters, 66 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-17 07:47:26,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 394 flow [2024-11-17 07:47:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-11-17 07:47:26,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869369369369369 [2024-11-17 07:47:26,534 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 238 flow. Second operand 4 states and 305 transitions. [2024-11-17 07:47:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 394 flow [2024-11-17 07:47:26,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 120 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:26,538 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 230 flow [2024-11-17 07:47:26,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-17 07:47:26,540 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 5 predicate places. [2024-11-17 07:47:26,540 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 230 flow [2024-11-17 07:47:26,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-17 07:47:26,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:26,541 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:26,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:47:26,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:26,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash -698745254, now seen corresponding path program 1 times [2024-11-17 07:47:26,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:26,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571076122] [2024-11-17 07:47:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:26,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571076122] [2024-11-17 07:47:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571076122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383833339] [2024-11-17 07:47:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:26,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:26,719 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) [2024-11-17 07:47:26,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:47:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:26,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:26,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:26,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383833339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723878046] [2024-11-17 07:47:26,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:26,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:26,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:27,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:27,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-17 07:47:27,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:27,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:27,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:28,096 INFO L124 PetriNetUnfolderBase]: 4232/9193 cut-off events. [2024-11-17 07:47:28,097 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2024-11-17 07:47:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16215 conditions, 9193 events. 4232/9193 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 79373 event pairs, 396 based on Foata normal form. 144/8530 useless extension candidates. Maximal degree in co-relation 1345. Up to 3893 conditions per place. [2024-11-17 07:47:28,174 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 106 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-11-17 07:47:28,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 163 transitions, 584 flow [2024-11-17 07:47:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-17 07:47:28,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6291291291291291 [2024-11-17 07:47:28,178 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 230 flow. Second operand 6 states and 419 transitions. [2024-11-17 07:47:28,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 163 transitions, 584 flow [2024-11-17 07:47:28,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 163 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:28,183 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 236 flow [2024-11-17 07:47:28,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=98, 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=236, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-11-17 07:47:28,236 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 8 predicate places. [2024-11-17 07:47:28,237 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 236 flow [2024-11-17 07:47:28,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-17 07:47:28,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:28,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:28,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:47:28,438 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 [2024-11-17 07:47:28,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:28,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:28,439 INFO L85 PathProgramCache]: Analyzing trace with hash -379116351, now seen corresponding path program 1 times [2024-11-17 07:47:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658343640] [2024-11-17 07:47:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:28,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658343640] [2024-11-17 07:47:28,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658343640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:28,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286789713] [2024-11-17 07:47:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:28,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:28,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 111 [2024-11-17 07:47:28,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-17 07:47:28,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:28,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 111 [2024-11-17 07:47:28,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:30,103 INFO L124 PetriNetUnfolderBase]: 6314/13608 cut-off events. [2024-11-17 07:47:30,104 INFO L125 PetriNetUnfolderBase]: For 1151/1312 co-relation queries the response was YES. [2024-11-17 07:47:30,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23894 conditions, 13608 events. 6314/13608 cut-off events. For 1151/1312 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 123893 event pairs, 1497 based on Foata normal form. 223/13002 useless extension candidates. Maximal degree in co-relation 19172. Up to 6459 conditions per place. [2024-11-17 07:47:30,196 INFO L140 encePairwiseOnDemand]: 102/111 looper letters, 122 selfloop transitions, 12 changer transitions 0/187 dead transitions. [2024-11-17 07:47:30,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 187 transitions, 734 flow [2024-11-17 07:47:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:47:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:47:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2024-11-17 07:47:30,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2024-11-17 07:47:30,200 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 236 flow. Second operand 5 states and 400 transitions. [2024-11-17 07:47:30,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 187 transitions, 734 flow [2024-11-17 07:47:30,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 187 transitions, 723 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:47:30,210 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 324 flow [2024-11-17 07:47:30,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2024-11-17 07:47:30,213 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 13 predicate places. [2024-11-17 07:47:30,213 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 324 flow [2024-11-17 07:47:30,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-17 07:47:30,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:30,214 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:47:30,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:47:30,214 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:30,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash -186265883, now seen corresponding path program 1 times [2024-11-17 07:47:30,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:30,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129547855] [2024-11-17 07:47:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:30,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:47:30,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:30,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129547855] [2024-11-17 07:47:30,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129547855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:30,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:30,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:47:30,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300879285] [2024-11-17 07:47:30,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:30,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:30,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:30,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-17 07:47:30,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:30,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:30,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:31,744 INFO L124 PetriNetUnfolderBase]: 6320/14144 cut-off events. [2024-11-17 07:47:31,744 INFO L125 PetriNetUnfolderBase]: For 5039/5066 co-relation queries the response was YES. [2024-11-17 07:47:31,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27663 conditions, 14144 events. 6320/14144 cut-off events. For 5039/5066 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 131598 event pairs, 2379 based on Foata normal form. 162/13427 useless extension candidates. Maximal degree in co-relation 24192. Up to 8423 conditions per place. [2024-11-17 07:47:31,872 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 104 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-11-17 07:47:31,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 161 transitions, 714 flow [2024-11-17 07:47:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2024-11-17 07:47:31,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6576576576576577 [2024-11-17 07:47:31,874 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 324 flow. Second operand 4 states and 292 transitions. [2024-11-17 07:47:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 161 transitions, 714 flow [2024-11-17 07:47:31,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 161 transitions, 710 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:31,887 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 336 flow [2024-11-17 07:47:31,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2024-11-17 07:47:31,889 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 15 predicate places. [2024-11-17 07:47:31,889 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 336 flow [2024-11-17 07:47:31,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-17 07:47:31,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:31,890 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:47:31,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:47:31,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:31,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 51329665, now seen corresponding path program 1 times [2024-11-17 07:47:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423684440] [2024-11-17 07:47:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:31,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:31,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:31,961 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:31,962 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:47:31,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:47:31,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:47:31,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:47:31,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:47:31,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:47:31,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:47:31,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:47:31,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:47:31,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:47:31,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:47:31,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:47:31,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:47:31,970 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:47:31,970 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:31,971 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:47:32,011 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:47:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:32,067 INFO L124 PetriNetUnfolderBase]: 58/302 cut-off events. [2024-11-17 07:47:32,067 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:47:32,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 302 events. 58/302 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1228 event pairs, 1 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 206. Up to 16 conditions per place. [2024-11-17 07:47:32,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:32,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:32,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:32,079 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;@1f26f9d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:32,079 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:47:32,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:32,085 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:32,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:32,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:32,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:32,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -639236955, now seen corresponding path program 1 times [2024-11-17 07:47:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803037539] [2024-11-17 07:47:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:32,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:32,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803037539] [2024-11-17 07:47:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803037539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:32,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:32,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649804604] [2024-11-17 07:47:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:32,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:32,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 146 [2024-11-17 07:47:32,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 146 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2024-11-17 07:47:32,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:32,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 146 [2024-11-17 07:47:32,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:45,752 INFO L124 PetriNetUnfolderBase]: 91474/167007 cut-off events. [2024-11-17 07:47:45,752 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-11-17 07:47:46,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292637 conditions, 167007 events. 91474/167007 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 3907. Compared 1826503 event pairs, 55768 based on Foata normal form. 56255/211283 useless extension candidates. Maximal degree in co-relation 19109. Up to 124468 conditions per place. [2024-11-17 07:47:47,300 INFO L140 encePairwiseOnDemand]: 118/146 looper letters, 79 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-17 07:47:47,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 149 transitions, 489 flow [2024-11-17 07:47:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:47,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-17 07:47:47,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2024-11-17 07:47:47,304 INFO L175 Difference]: Start difference. First operand has 125 places, 146 transitions, 319 flow. Second operand 4 states and 388 transitions. [2024-11-17 07:47:47,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 149 transitions, 489 flow [2024-11-17 07:47:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:47,310 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 299 flow [2024-11-17 07:47:47,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2024-11-17 07:47:47,313 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2024-11-17 07:47:47,313 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 299 flow [2024-11-17 07:47:47,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2024-11-17 07:47:47,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:47,314 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:47,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:47:47,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:47,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1929394468, now seen corresponding path program 1 times [2024-11-17 07:47:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386206256] [2024-11-17 07:47:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:47,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:47,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386206256] [2024-11-17 07:47:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386206256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657167225] [2024-11-17 07:47:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:47,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:47,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:47,457 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) [2024-11-17 07:47:47,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:47:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:47,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:47,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:47,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657167225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:47,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215143382] [2024-11-17 07:47:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:47,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:47,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 146 [2024-11-17 07:47:47,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 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) [2024-11-17 07:47:47,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:47,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 146 [2024-11-17 07:47:47,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:58,158 INFO L124 PetriNetUnfolderBase]: 76961/138863 cut-off events. [2024-11-17 07:47:58,159 INFO L125 PetriNetUnfolderBase]: For 7168/7168 co-relation queries the response was YES. [2024-11-17 07:47:58,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250392 conditions, 138863 events. 76961/138863 cut-off events. For 7168/7168 co-relation queries the response was YES. Maximal size of possible extension queue 3090. Compared 1471323 event pairs, 17756 based on Foata normal form. 1872/130043 useless extension candidates. Maximal degree in co-relation 229371. Up to 63134 conditions per place. [2024-11-17 07:47:59,398 INFO L140 encePairwiseOnDemand]: 141/146 looper letters, 141 selfloop transitions, 6 changer transitions 0/214 dead transitions. [2024-11-17 07:47:59,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 214 transitions, 767 flow [2024-11-17 07:47:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2024-11-17 07:47:59,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6278538812785388 [2024-11-17 07:47:59,401 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 299 flow. Second operand 6 states and 550 transitions. [2024-11-17 07:47:59,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 214 transitions, 767 flow [2024-11-17 07:47:59,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 765 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:59,407 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 305 flow [2024-11-17 07:47:59,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2024-11-17 07:47:59,408 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 8 predicate places. [2024-11-17 07:47:59,408 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 305 flow [2024-11-17 07:47:59,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 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) [2024-11-17 07:47:59,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:59,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:59,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:47:59,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 07:47:59,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:59,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2144744034, now seen corresponding path program 1 times [2024-11-17 07:47:59,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:59,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372099174] [2024-11-17 07:47:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:59,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:59,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372099174] [2024-11-17 07:47:59,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372099174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:59,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:59,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891280368] [2024-11-17 07:47:59,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:59,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:59,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:59,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 146 [2024-11-17 07:47:59,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:47:59,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:59,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 146 [2024-11-17 07:47:59,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand